1. Established: 2008, with 17 years of experience; registered capital of 11.18 million RMB; workshop area of 8000 square meters; annual foreign trade revenue of 20 million RMB.
2. Certifications: Holds import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates.
3. Equipment: The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic testers, and various inspection instruments.
4. Product Types: Offers J55, K55, N80, L80, P110 oil casings, couplings, short joints, and transition joints.
5. Inventory: Maintains a stock of high corrosion-resistant oil casings such as 80S, 90S, 110S, 1Cr, 3Cr, and 13Cr, with approximately 2,000 tons available year-round.
6. Special Processing: Provides custom processing for direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services, producing tens of thousands of special couplings each year.
41/2â?? LTC Coupling Oil Casing
Oil casing is primarily used for drilling oil and gas wells and the transportation of oil and gas. It includes oil drill pipes, oil casings, and sucker rods.
Introduction to Oil Casing Coupling Types:
1. LTC (Long Thread Connector): Long round coupling. The long thread connection LTC has the same thread shape as STC and can be connected; however, such connections are generally not permitted because they can withstand different torque values.
2. STC (Stub (Short) Thread Connector): Short round coupling. Both STC and LTC threads belong to the API standard threads. The only difference is the length of the threads; LTC is longer, while STC is shorter. For a 41/2â?? outer diameter pipe, if the actual measured thread length exceeds 3 inches, it is generally considered LTC; if it is less than 3 inches, it is considered STC.
3. BTC (Buttress Thread Coupling): Buttress thread coupling.
Processable Casing Specifications:
41/2'', 5'', 51/2'', 65/8'', 7'', 75/8'', 85/8'', 95/8'', 103/4'', 113/4'', 133/8'', 16'', 185/8'', 20''.
Steel Grades:
J55, K55, N801, N80Q, L801, P110, L803CR, 9CR, 13CR, P11013CR (Super 13CR), 28CR, etc.
Coupling Types:
Short round coupling (STC), long round coupling (LTC), buttress coupling (BTC), and various high gastightness special couplings.
Production Process:
Hot rolling.
Product Use:
Used for drilling oil wells.
Packaging Method:
Steel straps/steel frames, or according to customer requirements.
Annual Supply Volume:
300,000 tons.
Our company strictly adheres to API Spec 5CT standards and the ISO 9001 international quality management system. We have manufacturing equipment, including CNC lathes, CNC coupling machines, automatic flaw detectors, CNC hydrostatic pressure testing machines, automatic marking machines, automatic painting and labeling machines, 16ton cranes, ultrasonic thickness gauges, and automatic feeding systems for production and testing.
While meeting domestic market needs, we provide highquality products and services to numerous enterprises and have established longterm supplier relationships with countries and regions such as Saudi Arabia, the United Arab Emirates, Sudan, Kuwait, and Turkey.
Corporate Purpose:
Integrity, Pragmatism, Mutual Benefit, WinWin.
Management Philosophy:
Based on humane management, we implement modern management throughout all departments and processes of the enterprise; marketoriented, adhering to integrity and legality, and achieving winwin situations with customers.
We always follow the principle of prioritizing people before tasks, insisting on equipment and scientific management as the foundation, and providing customers with highquality products. With a complete marketing network and service system, we ensure satisfactory service for our customers. We look forward to working together to create brilliance!
Material and Manufacturing Process
Both sucker rod tubing connectors and conversion fittings are typically made from high-strength alloy steel, which offers good mechanical properties and corrosion resistance. During production, these steels undergo rigorous heat treatment to ensure hardness and toughness. To enhance sealing performance, the threaded sections of these components are coated with special sealing materials. In regions such as Beijing and Qinghai, there are many specialized manufacturers of these products. These companies employ advanced production and testing technologies to ensure the quality and performance of each product. For example, a Beijing-based company produces sucker rod tubing connectors with advanced thread machining and sealing inspection equipment, ensuring reliability in high-pressure and high-temperature environments.
Applications
Sucker rod tubing connectors and conversion fittings are widely used in the extraction and transportation of oil and natural gas. In oil and gas fields in regions such as Qinghai, where geological conditions are complex and high sealing performance and strength are required, these components are extensively applied due to their excellent performance.
Market Competition and Development Trends
Currently, market competition for sucker rod tubing connectors and conversion fittings mainly focuses on product quality, price, and service. Some companies in Qinghai and other regions have gradually secured a market position through technological innovation and cost control. Looking ahead, with the continuous advancement of oil and gas extraction technologies, the market demand for these components will further increase. Companies will place greater emphasis on product intelligence and environmental protection, enhancing performance and reliability through the development of new materials and connection technologies.
Summary
As vital connecting components in oil and gas extraction, sucker rod tubing connectors and conversion fittings provide strong assurance for the stable operation of oil and gas wells with their reliable performance and advanced technology. Manufacturers in regions such as Beijing and Qinghai continuously innovate and control quality to supply high-quality products to the market. As market demand grows and technology advances, these components are set to play an even more significant role in future oil and gas extraction.
FOXHYD-511 Special Thread, VAM FJL Gas-Tight Thread, HYD-PH6 Direct-Connect Gas-Tight Thread
In the oil and natural gas industry, the reliability of thread connections directly affects the safety and efficiency of operations. Our products, including FOXHYD-511 special thread, VAM FJL gas-tight thread, and HYD-PH6 direct-connect gas-tight thread, are designed and manufactured using advanced concepts and processes to provide high-quality thread connection solutions.
Product Advantages:
Our thread products are manufactured from high-quality materials and undergo strict quality inspection to meet relevant standards. In the design process, we consider various operational requirements to ensure reliability and durability. Additionally, we provide professional technical support and after-sales service to address any issues customers may encounter.
Custom Processing:
Tianjin Longkailai Petroleum Equipment Co., Ltd. undertakes the processing and production of various special threads for oil and casing pipes, including high gas-tightness thread processing. We offer custom processing of special thread couplings, special thread tubing couplings, special thread casing couplings, and other related products. We can also process special threads for tubing and casing in sizes ranging from 2-3/8 inches to 20 inches.
Special Thread Advantages:
- High joint strength, matching or exceeding the strength of the pipe body, suitable for deep and ultra-deep wells.
- Excellent sealing performance, suitable for high-pressure gas wells, oil wells, and thermal recovery wells.
- Strong bending resistance, suitable for directional wells, extended-reach wells, and horizontal wells.
- Easy and reliable connection, suitable for drilling operations in harsh environments such as deserts and offshore areas.
- Good anti-sticking performance, allowing repeated loosening and tightening without damaging the threads.
- High resistance to over-torque.
- Good corrosion resistance.
Market Competition and Development Trends
Currently, market competition for special and gas-tight connections mainly focuses on product quality, price, and service. Some companies in Gansu and other regions have gradually secured a market position through technological innovation and cost control. Looking ahead, with the continuous advancement of oil and gas extraction technologies, the market demand for these connections will further increase. Companies will place greater emphasis on product intelligence and environmental protection, enhancing performance and reliability through the development of new materials and connection technologies.
Summary
As important thread forms in oil pipe connections, special and gas-tight connections provide strong assurance for the stable operation of oil and gas wells with their excellent sealing performance and high strength. Manufacturers in regions such as Jiangsu, Xinjiang, and Fujian continuously innovate and control quality to supply high-quality products to the market. As market demand grows and technology advances, these connections are set to play an even more significant role in future oil and gas extraction.
Market Competition and Development Trends
Currently, market competition for sulfide-resistant tubing and tubing shorts primarily focuses on product quality, price, and service. Some companies in Shandong and other regions have gradually secured a market position through technological innovation and cost control. Looking ahead, with the continuous advancement of oil and gas extraction technologies, the market demand for these products will further increase. Companies will place greater emphasis on product intelligence and environmental protection, enhancing performance and reliability through the development of new materials and connection technologies.
Summary
As vital equipment in oil and gas extraction, sulfide-resistant tubing and tubing shorts provide strong assurance for the development of sour gas and oil wells with their excellent corrosion resistance and reliable mechanical strength. Manufacturers in regions such as Hebei and Shandong continuously innovate and control quality to supply high-quality products to the market. As market demand grows and technology advances, these products are set to play an even more significant role in future oil and gas extraction.
Future Trends
Looking ahead, the development of sulfide-resistant casing shorts will place greater emphasis on environmental protection and intelligence. On one hand, companies will strive to develop more environmentally friendly anti-corrosion coatings and materials to reduce environmental impact. On the other hand, intelligent detection and monitoring systems will be applied to sulfide-resistant casing shorts. By continuously monitoring the corrosion status and operational conditions of the casings, potential issues can be identified in a timely manner to ensure the safe operation of oil and gas wells.
Summary
As a key piece of oil extraction equipment, sulfide-resistant casing shorts provide strong assurance for the development of sour gas and oil wells with their outstanding corrosion resistance and reliable mechanical strength. Manufacturers in regions like Henan, Jilin, and Shanghai continuously innovate and control quality to supply high-quality products to the market. With increasing market demand and ongoing technological advancements, sulfide-resistant casing shorts are poised to play an even more significant role in future oil and gas extraction.
Product Introduction III: Special Connections
Product Overview
Special connections are a key component in oil country tubular goods (OCTG), used to connect casing and tubing. Their performance directly impacts the safety and efficiency of oil and gas extraction. Tianjin Grand Victory Company produces special connections with advanced design concepts and manufacturing processes, ensuring high sealing performance and strength. Our special connections are widely used in both land-based and offshore oil and gas fields, meeting the demands of different well depths and geological conditions.II. Outer Diameter Specifications
Tianjin Grand Victory Company offers a variety of outer diameter specifications for special connections to meet the needs of different customers. Common specifications include:
- 2.375 inches (60.3mm)
- 2.875 inches (73.0mm)
- 3.5 inches (88.9mm)
- 4.0 inches (101.6mm)
- 4.5 inches (114.3mm)
These special connections are manufactured using advanced production processes to ensure precision in outer diameter and connection stability.
Yield Strength
Yield strength is a critical performance indicator for special connections, determining the maximum pressure they can withstand underground. Tianjin Grand Victory Company's special connections offer a wide range of yield strengths to meet the needs of different extraction environments:
- J55 special connection: Minimum yield strength of 35,000 psi (241 MPa)
- N80 special connection: Minimum yield strength of 45,000 psi (310 MPa)
- P110 special connection: Minimum yield strength of 75,000 psi (517 MPa)
- 13CR special connection: Minimum yield strength of 75,000 psi (517 MPa), maximum yield strength of 105,000 psi (724 MPa)
These different strength grades of special connections can adapt to various complex conditions, from shallow to deep wells and from conventional extraction to high-sulfur hydrogen environments.
Tianjin Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise for production, processing, sales, technology research and development, and spot storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million yuan. It has import and export rights, ISO9001 quality system certification, American Petroleum Institute API 5CT certification and a number of national patent certificates. The production workshop is equipped with several types of equipment such as highprecision CNC lathes, thread tightening machines, hydraulic presses, etc., and complete inspection and measurement instruments. Products include J55, K55, N801/Q, L80, P110 and other oil casing, couplings, Pup Jointã??Xover ï¼?Cross overï¼?; 80S, 90S, 110S, L801Cr/3Cr/13Cr and other highcorrosion resistant oil casing spot storage, with a longterm reserve of about 2,000 tons. At the same time, it undertakes the processing and copper plating of special sealing threads such as direct connection, wedge shape, double step, variable pitch, etc. for oil well pipes and petroleum accessories, with fast delivery and excellent quality, reducing costs and increasing efficiency for customers. Our vision: to build an international oil pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit us for cooperation and common development.
Our products cover a wide range of oil and casing pipes, including J55, K55, N801/Q, L80, P110, couplings, short connections, and transition joints. We also have a large inventory of high corrosion-resistant oil and casing pipes such as 80S, 90S, 110S, L801Cr/3Cr/13Cr, with about 2,000 tons in stock throughout the year. Additionally, we undertake special sealing thread processing and copper plating services for oil well pipes and petroleum accessories, including straight connection, wedge, double-step, and variable-pitch threads, with tens of thousands of special thread components produced annually.
Fast delivery, high quality, and cost-saving for customers. Our vision: To build an international petroleum pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit and explore cooperation opportunities.
1. Since 2008, with a registered capital of 11.18 million yuan and an 8,000 square meter workshop, the annual foreign trade turnover is 20 million yuan.
2. Holding the right to import and export, ISO9001 quality system certification, API 5CT certification from the American Petroleum Institute, and several national patents.
3. The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic presses, and a complete set of inspection tools.
4. Products include J55, K55, N801/Q, L80, P110 oil and casing pipes, couplings, short connections, and transition joints.
5. We have a large inventory of high corrosion-resistant oil and casing pipes such as 80S, 90S, 110S, L801Cr/3Cr/13Cr, with about 2,000 tons in stock throughout the year.
6. We undertake special sealing thread processing and copper plating services for oil well pipes and petroleum accessories, including straight connection, wedge, double-step, and variable-pitch threads, with tens of thousands of special thread components produced annually.
Product Description
PUP JOINT are short lengths of tubing, and are used for spacing out downhole assemblies, as well as handling production tubing accessories.
Product Description
Size Outside Diameter(Mm) Wall Thickness(Mm) Length(FT)
1.050- 26.67 2.87-3.91 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
1.315- 33.40 3.38-4.55 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
1.660- 42.16 3.18-4.85 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
1.900- 48.26 3.18-7.64 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
2.063- 52.40 4.73-6.58 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
2-3/8- 60.32 5.86-10.89 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
2-7/8- 73.02 9.17-17.05 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
3-1/2- 88.9 11.29-25.04 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
4- 101.60 13.57-32.89 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
4-1/2- 114.30 18.23-38.79 2ft, 4ft, 6ft, 8ft, 10ft, 12ft
Advantages/Features
Tianjin Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise engaged in production, processing, sales, technical research and development, and inventory storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million RMB. The company holds import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates. The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic testers, and various inspection instruments.
- Product Range: Includes oil casings such as J55, K55, N80, L80, P110, as well as couplings, short joints, and transition joints; high corrosion-resistant oil casings such as 80S, 90S, 110S, L80, 1Cr, 3Cr, and 13Cr are stocked year-round, maintaining an inventory of around 2,000 tons.
- Processing Capability: Undertakes custom processing of direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services.
- Delivery and Quality: Fast delivery and high quality, aimed at reducing costs and increasing efficiency for customers. Our vision is to build an international petroleum pipeline equipment enterprise through integrity and innovation. We welcome leaders and friends from all walks of life to visit and cooperate for mutual development.
1. Established: 2008, with 17 years of experience; registered capital of 11.18 million RMB; workshop area of 8000 square meters; annual foreign trade revenue of 20 million RMB.
2. Certifications: Holds import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates.
3. Equipment: The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic testers, and various inspection instruments.
4. Product Types: Offers J55, K55, N80, L80, P110 oil casings, couplings, short joints, and transition joints.
5. Inventory: Maintains a stock of high corrosion-resistant oil casings such as 80S, 90S, 110S, 1Cr, 3Cr, and 13Cr, with approximately 2,000 tons available year-round.
6. Special Processing: Provides custom processing for direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services, producing tens of thousands of special couplings each year.
Copper Plating Services: We produce tens of thousands of special couplings annually.
Oilfield Connection Oil Pipe Reducers: 35CrMo.
We can process various types of oil pipe couplings:
Specifications: 1.941/2
Thread Types: EUE (thickened), NUE (not thickened).
Short Drill Pipe Conversion Joints: Oilfield connection oil pipe reducers 35CrMo, with specifications of 1.941/2 and various thread types.
Variable Coupling Conversion Joints: Double male (PIN X PIN), one male and one female (PIN X BOX).
Casing Couplings:
Specifications: 41/2 to 20 inches.
Thread Types: STC (Short Round Coupling), LTC (Long Round Coupling), BTC (Buttress Coupling).
We can also customize various couplings and joints according to drawings.
Standards: API5CT, API5L, API5B.
Oil Pipe Specifications: 23/8 to 41/2, with end processing types NUE and EUE.
We can also process various sizes of oil casing short joints, double male short joints, reducer short joints, and conversion joints according to orders, ranging from 2FT to 20FT.
Oil Casing Specifications: 41/2 to 20, with thread types STC, LTC, BTC, etc.
Materials: H40, J55, K55, N80, L80, C90, C95, T95, P110, Q125, 13Cr80, 13Cr110, Super 13Cr, etc.
We always adhere to the principle of prioritizing people before tasks, insisting on equipment and scientific management as the foundation to provide customers with high-quality products. With a complete marketing network and service system, we ensure satisfactory service for our customers. We look forward to working together to create brilliance!
Specifications: 4 1/2 20
Standards: API 5CT/5B, the 11th edition of the coupling standard, BTC.
Manufacturers of Oil Pipe Couplings, Extended Oil Pipe Couplings, Special Clearance Couplings.
Casing Couplings: Processing thread types STC (Short Round Coupling), LTC (Long Round Coupling), BTC (Buttress Coupling).
Oil Pipe Couplings: 23/8'', 27/8'', 31/2'', 41/2''; Thread types: NUE, EUE.
Casing Couplings: 41/2'', 51/2'', 65/8'', 7'', 95/8'', 103/4'', 133/8'', 20''; Thread types: STC, LTC, BTC.
1. We provide coupling blanks (according to API SPEC 5CT (9th edition) requirements) with quality specifications and related certifications to ensure that the coupling blanks are produced according to API requirements.
2. Thread inspection of casing couplings according to the 11th edition of the coupling standard, BTC.
3. Thread processing for couplings, including tight distance, tooth height, pitch, taper, and other parameters, is inspected according to API Spec 5CT (9th edition) and API Spec 5B (15th edition); all dimensional and thread parameter inspections must be well documented.
4. The surface of the threads must be smooth and free of significant tearing, tool marks, abrasion marks, shoulders, or any other defects that disrupt the continuity of the threads; internal and external chamfers and starting threads must be free of burrs and other flaws.
5. The critical thickness of the coupling should be specified.
6. Internal and external edges of the coupling should be rounded, with R 0.5 mm, and the edges on the bearing surface of the coupling should be chamfered.
7. Thread flaw detection.
We sincerely look forward to your inquiries! We are dedicated to serving you!
Copper Plating Services: We produce tens of thousands of special couplings annually.
Oilfield Connection Oil Pipe Reducers: 35CrMo.
We can process various types of oil pipe couplings:
Specifications: 1.941/2
Thread Types: EUE (thickened), NUE (not thickened).
Short Drill Pipe Conversion Joints: Oilfield connection oil pipe reducers 35CrMo, with specifications of 1.941/2 and various thread types.
Variable Coupling Conversion Joints: Double male (PIN X PIN), one male and one female (PIN X BOX).
Casing Couplings:
Specifications: 41/2 to 20 inches.
Thread Types: STC (Short Round Coupling), LTC (Long Round Coupling), BTC (Buttress Coupling).
We can also customize various couplings and joints according to drawings.
Standards: API5CT, API5L, API5B.
Oil Pipe Specifications: 23/8 to 41/2, with end processing types NUE and EUE.
We can also process various sizes of oil casing short joints, double male short joints, reducer short joints, and conversion joints according to orders, ranging from 2FT to 20FT.
Oil Casing Specifications: 41/2 to 20, with thread types STC, LTC, BTC, etc.
Materials: H40, J55, K55, N80, L80, C90, C95, T95, P110, Q125, 13Cr80, 13Cr110, Super 13Cr, etc.
Tubing Couplings and Coupling Material Eccentric Wear
I. Tubing Couplings
Product Features:
Tubing couplings are essential accessories used to connect tubing, typically made from high-strength metallic materials such as carbon steel or alloy steel. These materials provide excellent corrosion resistance and fatigue performance. The design of the couplings effectively disperses stress concentrations in the wellb, preventing cracks or fatigue damage caused by excessive localized stress. Common types of tubing couplings include standard couplings, semi-upset couplings, internally upset couplings, threaded couplings, sealing couplings, and ultra-high-pressure couplings. Each type offers solutions tailored to different well conditions and pressure environments.
Application Fields:
Tubing couplings play a crucial role in the oil and natural gas industry, primarily used to connect tubing to ensure the continuous flow of oil or natural gas from the wellb to the surface. They are used to connect various types and sizes of tubing, including straight pipes, transition pipes, elbows, and other equipment such as floating production storage and offloading systems and pipeline valves. Additionally, tubing couplings are widely used in plumbing, petrochemical, heating systems, and construction engineering.
We sincerely look forward to your call! We are committed to serving you wholeheartedly!
Double Male Short Couplings, High-Pressure Short Couplings, Tubing Thread Change Couplings, Tubing Reducing Couplings, Tubing Conversion Couplings, Oil/ Casing Threads
I. Double Male Short Couplings and High-Pressure Short Couplings
Product Advantages:
1. High Strength and Durability: Manufactured from high-quality materials, these couplings can withstand high pressure and corrosive environments.
2. Sealing Performance: Special thread designs and sealing structures ensure the tightness of the connection.
3. Multiple Specification Options: Available in various sizes and thread types to meet the personalized needs of different customers.
4. Customized Services: Customized solutions can be provided based on specific customer requirements.
III. Oil/ Casing Threads
Product Features:
Oil/ casing threads are key connecting components in the oil and natural gas industry, and their quality and performance directly affect the safety and efficiency of oil wells. Our oil/ casing thread products are manufactured using advanced processes to ensure thread precision and strength. The thread surface is specially treated to provide excellent wear resistance and corrosion resistance. We also offer a variety of thread types, such as API standard threads and special threads, to meet different customer needs.
Application Fields:
Oil/ casing threads are widely used for pipeline connections in the drilling, extraction, and transportation processes of oil and natural gas. During drilling, they connect drill pipes and other equipment to ensure smooth drilling operations. In extraction, they connect tubing and casing to ensure efficient oil and gas transmission. In transportation, they connect pipelines to ensure safe oil and gas delivery.
Regular tubing couplings are commonly used and can meet the basic requirements for connection and sealing in general oil well extraction. Thickened tubing couplings are enhanced versions of regular couplings, with increased tensile and torsional strength, making them suitable for high-pressure and complex downhole environments. Flush tubing couplings feature a flat surface, which facilitates installation and reduces friction and wear during the process. Variable thread tubing couplings can be adjusted according to different tubing specifications and have good compatibility. Extended length tubing couplings are designed for situations requiring longer connection distances, providing more stable connections.
In the manufacturing process of tubing couplings, advanced materials and technologies are employed. For example, high-strength steel and special anti-corrosion coatings are used to significantly extend the service life and reliability of the couplings. Precision machining equipment and strict quality inspection ensure the dimensional accuracy and sealing performance of the couplings.
In practical applications, users need to select appropriate tubing couplings based on the specific conditions of the oil well. For instance, in wells containing corrosive gases, couplings with anti-corrosion coatings should be chosen; in high-pressure oil wells, thickened tubing couplings are necessary. Additionally, the installation of tubing couplings is crucial and must be carried out strictly according to operating procedures to ensure the solidity and sealing of the connections.
With the continuous development of oil extraction technology, the design and manufacturing technologies of tubing couplings are also constantly innovating. In the future, more high-performance and high-reliability tubing coupling products will be introduced to the market, providing strong support for the sustainable development of the oil industry.
Welcome to the Online Store of Tianjin Longkailai Petroleum Equipment Co., Ltd.
Execution Standards: API-5CT, API-5L, API-5B, API 5D
Tianjin Grand Victory Company places a strong emphasis on quality assurance. Our OCTG casings are manufactured in strict compliance with international standards such as API 5CT, ensuring that each product meets the highest quality and performance criteria. In addition to adhering to these standards, our products undergo rigorous testing and inspection processes, including:
- Material Testing: Each batch of steel used in the production of our casings is tested for chemical composition and mechanical properties to ensure it meets the required specifications.
- Non-Destructive Testing (NDT): Techniques such as ultrasonic testing (UT) and magnetic particle inspection (MPI) are employed to detect any internal or surface defects in the casing.
- Pressure Testing: To verify the integrity and strength of the casing, we conduct pressure tests that simulate the high-pressure conditions encountered in oil and gas wells.
Furthermore, our manufacturing facilities are certified by multiple international bodies, including ISO 9001 for quality management systems, ensuring that our processes and products consistently meet the highest standards of quality and reliability.
#### X. Environmental and Sustainability Commitments
Tianjin Grand Victory Petroleum Equipment Co., Ltd, as a professional tubing manufacturer, offers reliable solutions to the global oil and gas industry with its advanced technology, highquality products, and excellent service. Our tubing products cover a wide range of outer diameters and yield strength levels to meet the needs of different operating conditions. Meanwhile, our company has significant advantages in the research and development and production of special connections, providing highperformance and highly reliable connection solutions for customers. Choosing Tianjin Grand Victory Petroleum Equipment Co., Ltd means choosing quality and trust.
Grand Victory Company, as a professional provider of oil and gas pipeline solutions, is committed to offering high-quality and reliable oil well pipe products to customers worldwide. Our petroleum casing, made of high-sealing 13Cr material, is designed to meet the stringent requirements of modern oil and gas extraction. We understand that the oil and gas industry demands not only strength and durability from piping materials but also their performance in high-temperature, high-pressure, and corrosive environments. Therefore, our products have been carefully designed and selected for their materials.
Companys Unique Advantages:
1. Seamless Integration of Production and Sales: Our scientific management allows for flexible production scheduling. Since we focus on doing one thing exceptionally well, our production is entirely aligned with order timelines, making it easier to implement the planned arrangements.
2. Comprehensive Range of Special Couplings at Lower Prices: We possess multiple coupling design authorizations and have a wealth of experienced workers, enabling us to produce couplings that meet various user requirements at a lower cost. This includes designs such as VAM, HYD511, OTTM, CBS3, 3SB, HSM2, and more.
3. Industry-Wide Recognition: Over the past 17 years, our integrity, quality, and advantages have earned us an excellent reputation in the industry, which can be verified at any time.
Tianjin Grand Victory Petroleum Equipment Co., Ltd
Product J55 L80 13cr oil casing pipe in steel pipes
Outside Diameter: Wall Thickness:
Size 6-1240mm 1-200mm
Tolerance +/-1% +/-6%
Length 1.00-12.00M or according to the clientâ??s requirement
Brand Name GUANGXIN
Material J55 L80 13cr oil casing pipe in steel pipes
Q195,Q215,Q235B,Q345,20#,45# and so on
Standard ASTM/ BS/ GB/DIN and so on
Surface oiled or painted
Usage For low pressure liquid delivery such as water and gas.
For construction.
For structure
Payment T/T or L/C
Trade Term FOB/CNF/CIF
Delivery Time Within 15 days
Package 1.Large OD: in bulk
2,Small OD: Packed by steel strips, in bundle
3,As per to clients
1. Established: 2008, with 17 years of experience; registered capital of 11.18 million RMB; workshop area of 8000 square meters; annual foreign trade revenue of 20 million RMB.
2. Certifications: Holds import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates.
3. Equipment: The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic testers, and various inspection instruments.
4. Product Types: Offers J55, K55, N80, L80, P110 oil casings, couplings, short joints, and transition joints.
5. Inventory: Maintains a stock of high corrosion-resistant oil casings such as 80S, 90S, 110S, 1Cr, 3Cr, and 13Cr, with approximately 2,000 tons available year-round.
6. Special Processing: Provides custom processing for direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services, producing tens of thousands of special couplings each year.
1. Casing Product Introduction
1.1 Product Overview
Casing is an essential component in petroleum and natural gas drilling operations, primarily used to support the wellbore, isolate different formations, protect oil and gas layers, and establish channels for oil and gas transportation. The performance and quality of casing directly affect the safety, stability, and efficient production of oil and gas wells. Tianjin Grand Victory Petroleum Equipment Co., Ltd, as a professional casing manufacturer, is committed to providing high-quality and high-performance casing products to meet the needs of various well conditions and operating environments.
1.2 Outer Diameter Specifications
Tianjin Grand Victory Petroleum Equipment Co., Ltd offers a wide range of casing products with different outer diameters to meet the requirements of various well depths and geological conditions:
Surface Casing: Outer diameter ranges from 139.7mm to 508mm, suitable for stabilizing shallow formations.
Intermediate Casing: Outer diameter ranges from 114.3mm to 244.5mm, designed to isolate complex formations and protect oil and gas layers from damage.
Production Casing: Outer diameter ranges from 60.3mm to 177.8mm, used for oil and gas transportation during production to ensure efficient flow.
Deep Well Casing: Outer diameter ranges from 114.3mm to 244.5mm, specifically designed for deep and ultradeep wells with high strength and toughness to withstand extreme pressures and temperatures.
High Pressure Casing: Outer diameter ranges from 114.3mm to 244.5mm, suitable for high pressure oil and gas fields with excellent pressure resistance.
Corrosion Resistant Casing: Outer diameter ranges from 60.3mm to 244.5mm, with special corrosion resistant surface treatment to effectively resist corrosive environments.
Advantages/Features:
1. Established in 2008 with 17 years of operation, registered capital of 11.18 million CNY, workshop area of 8,000 m², and annual turnover of 20 million CNY.
2. Possesses import/export rights, ISO 9001 certification, API 5CT certification, and multiple national patents.
3. Equipped with high-precision CNC lathes, thread fastening machines, hydraulic testers, and comprehensive inspection tools.
4. Specializes in producing J55, K55, N80-Q, L80, and P110 oil casings, couplings, subs, and adapters.
5. Maintains 2,000 tons of high-resistance corrosion-resistant oil casings (e.g., 80S, 90S, 110S, L80-1Cr/3Cr/13Cr) in stock.
6. Offers custom threading (e.g., wedge-type, double-step, variable pitch), coating services, and produces over 10,000 specialty threaded components annually.
- Processing Capability: Undertakes custom processing of direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services.
- Delivery and Quality: Fast delivery and high quality, aimed at reducing costs and increasing efficiency for customers. Our vision is to build an international petroleum pipeline equipment enterprise through integrity and innovation. We welcome leaders and friends from all walks of life to visit and cooperate for mutual development.
1. Established: 2008, with 17 years of experience; registered capital of 11.18 million RMB; workshop area of 8000 square meters; annual foreign trade revenue of 20 million RMB.
2. Certifications: Holds import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates.
3. Equipment: The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic testers, and various inspection instruments.
4. Product Types: Offers J55, K55, N80, L80, P110 oil casings, couplings, short joints, and transition joints.
5. Inventory: Maintains a stock of high corrosion-resistant oil casings such as 80S, 90S, 110S, 1Cr, 3Cr, and 13Cr, with approximately 2,000 tons available year-round.
6. Special Processing: Provides custom processing for direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services, producing tens of thousands of special couplings each year.
Contact:Bone
Email:Bone@dlpoctg.com
Whatsapp/WeChat /Tel: +86-18222899636
Tianjin Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise for production, processing, sales, technology research and development, and spot storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million yuan. It has import and export rights, ISO9001 quality system certification, American Petroleum Institute API 5CT certification and a number of national patent certificates. The production workshop is equipped with several types of equipment such as highprecision CNC lathes, thread tightening machines, hydraulic presses, etc., and complete inspection and measurement instruments. Products include J55, K55, N801/Q, L80, P110 and other oil casing, couplings, Pup Jointã??Xover ï¼?Cross overï¼?; 80S, 90S, 110S, L801Cr/3Cr/13Cr and other highcorrosion resistant oil casing spot storage, with a longterm reserve of about 2,000 tons. At the same time, it undertakes the processing and copper plating of special sealing threads such as direct connection, wedge shape, double step, variable pitch, etc. for oil well pipes and petroleum accessories, with fast delivery and excellent quality, reducing costs and increasing efficiency for customers. Our vision: to build an international oil pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit us for cooperation and common development.
- Product Range: Includes oil casings such as J55, K55, N80, L80, P110, as well as couplings, short joints, and transition joints; high corrosion-resistant oil casings such as 80S, 90S, 110S, L80, 1Cr, 3Cr, and 13Cr are stocked year-round, maintaining an inventory of around 2,000 tons.
- Processing Capability: Undertakes custom processing of direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services.
- Delivery and Quality: Fast delivery and high quality, aimed at reducing costs and increasing efficiency for customers. Our vision is to build an international petroleum pipeline equipment enterprise through integrity and innovation. We welcome leaders and friends from all walks of life to visit and cooperate for mutual development.
TianjinGrand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise for production, processing, sales, technology research and development, and spot storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million yuan. It has import and export rights, ISO9001 quality system certification, American Petroleum Institute API 5CT certification and a number of national patent certificates. The production workshop is equipped with several types of equipment such as high precision CNC lathes, thread tightening machines, hydraulic presses, etc., and complete inspection and measurement instruments. Products include J55, K55, N801/Q, L80, P110 and other oil casing, couplings, Pup Joint Xover Cross over; 80S, 90S, 110S, L801Cr/3Cr/13Cr and other high corrosion resistant oil casing spot storage, with a long term reserve of about 2,000 tons. At the same time, it undertakes the processing and copper plating of special sealing threads such as direct connection, wedge shape, double step, variable pitch, etc. for oil well pipes and petroleum accessories, with fast delivery and excellent quality, reducing costs and increasing efficiency for customers. Our vision: to build an international oil pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit us for cooperation and common development.
Advantages/Features:
1. Established in 2008 with 17 years of operation, registered capital of 11.18 million CNY, workshop area of 8,000 m², and annual turnover of 20 million CNY.
2. Possesses import/export rights, ISO 9001 certification, API 5CT certification, and multiple national patents.
3. Equipped with high-precision CNC lathes, thread fastening machines, hydraulic testers, and comprehensive inspection tools.
4. Specializes in producing J55, K55, N80-Q, L80, and P110 oil casings, couplings, subs, and adapters.
5. Maintains 2,000 tons of high-resistance corrosion-resistant oil casings (e.g., 80S, 90S, 110S, L80-1Cr/3Cr/13Cr) in stock.
6. Offers custom threading (e.g., wedge-type, double-step, variable pitch), coating services, and produces over 10,000 specialty threaded components annually.
Tianjin Grand Victory Company's Competitive Pricing Advantage
As a well-known manufacturer of oil country tubular goods, Tianjin Grand Victory Company leverages its advanced production equipment and efficient production processes to offer competitive pricing. Our pricing advantages are mainly reflected in the following aspects:
1. Large-scale production: The company has a large modern production base that can achieve large-scale production, thereby reducing unit costs.
2. Direct sales: As the manufacturer, we directly engage with customers, eliminating intermediary links to ensure that customers can purchase high-quality products at the most favorable prices.
3. Customized services: We provide customized production services, adjusting product specifications and performance according to specific customer needs while maintaining reasonable prices.
Special Connection Advantages
Tianjin Grand Victory Company has extensive experience in the design and manufacturing of special connections. Our connectors use advanced special connection technology, offering the following advantages:
1. High sealing performance: The special connection design ensures high sealing performance of the connector, effectively preventing gas and liquid leakage, and maintaining good sealing performance even in high-pressure and highly corrosive environments.
2. High-strength connection: The special connection can withstand higher tensile and compressive forces, ensuring the stability of the connection under complex working conditions and reducing safety hazards caused by loose connections.
3. Corrosion resistance: The special connection is treated with special processes, providing excellent corrosion resistance and extending the service life of the connector, especially in high-sulfur hydrogen (HS) and high-carbon dioxide (CO) environments.
4. Quick installation: The special connection design simplifies the installation process, improves construction efficiency, and reduces construction costs. Our connector design is easy to operate and can be quickly connected, reducing on-site installation time.
Grand Victory Company, as a professional provider of oil and gas pipeline solutions, is committed to offering high-quality and reliable oil well pipe products to customers worldwide. Our petroleum casing, made of high-sealing 13Cr material, is designed to meet the stringent requirements of modern oil and gas extraction. We understand that the oil and gas industry demands not only strength and durability from piping materials but also their performance in high-temperature, high-pressure, and corrosive environments. Therefore, our products have been carefully designed and selected for their materials.
Companys Unique Advantages:
1. Seamless Integration of Production and Sales: Our scientific management allows for flexible production scheduling. Since we focus on doing one thing exceptionally well, our production is entirely aligned with order timelines, making it easier to implement the planned arrangements.
2. Comprehensive Range of Special Couplings at Lower Prices: We possess multiple coupling design authorizations and have a wealth of experienced workers, enabling us to produce couplings that meet various user requirements at a lower cost. This includes designs such as VAM, HYD511, OTTM, CBS3, 3SB, HSM2, and more.
3. Industry-Wide Recognition: Over the past 17 years, our integrity, quality, and advantages have earned us an excellent reputation in the industry, which can be verified at any time.
Company Products: Tubing couplings, tubing collars, thickened tubing couplings, flush tubing couplings, variable thread tubing couplings, extended length tubing couplings, single-end threaded tubing couplings, internal thread tubing couplings, tubing connectors, variable thread tubing connectors, variable diameter tubing couplings, tubing conversion connectors, tubing coupling stock, tubing nipples, tubing short sections, thickened tubing nipples, tubing lifting nipples, double male tubing nipples, heavy-weight tubing nipples/short sections, lifting tubing nipples/short sections, variable thread tubing nipples/short sections, variable diameter tubing short sections/nipples, tubing conversion connectors, single-end threaded tubing nipples, coupling stock, thickened tubing, EUE thickened petroleum tubing, high-pressure tubing nipples, [casing short sections], [casing nipples], [double male casing short sections], [double male casing nipples], [casing variable thread couplings], [casing variable thread connectors], [external thread casing nipples/short sections], [casing conversion connectors], [high-pressure casing nipples], [casing thread protectors (cap)], [casing coupling stock], [finished casing products], casing couplings, coupling stock, short round thread casing couplings, long round casing couplings, tapered casing couplings, variable thread casing couplings, casing connectors, casing collars, variable diameter casing couplings, eccentric casing couplings, casing conversion connectors, API casing, single-end threaded casing couplings, coupling stock.
Casing Specifications: 4-1/2-20 with thread types such as STC (Short Round), LTC (Long Round), BTC (Trapezoidal Thread), etc.
Tubing Specifications: 1.05-4-1/2 with end processing forms NU (Non-Upset) and EU (Upset).
Custom Processing: We can process couplings, nipples, variable thread connectors, etc., in various lengths and sizes according to order drawings.
Processing Forms: Straight connection tubing nipples/connectors, PIN * PIN (double male nipples), PIN * BOX (male-female finished nipples), BOX * PIN (female-male finished nipples).
Materials: H40, J55, K55, N80, L80, C-90, C95, T95, P110, Q125, 13Cr-80, 13Cr-110, Super 13Cr, Nickel-based alloy tubing, etc.
Drill Pipe Specifications: 2-3/8-6-5/8, etc.
Thickening Forms: Internal thickening, external thickening, internal and external thickening. Custom-made products such as drill pipe variable thread connectors, drill pipe nipples, double male drill pipe nipples, and drill pipe conversion connectors in various lengths according to orders or drawings.
Materials: E-75, X95, G105, S135, etc.
Offshore Oil Fields: In the harsh offshore environment, our high-sealing petroleum casing can resist seawater corrosion and high-pressure conditions, ensuring the safe extraction of offshore oil and gas.
Quality Assurance
1. Since 2008, with a registered capital of 11.18 million yuan and an 8,000 square meter workshop, the annual foreign trade turnover is 20 million yuan.
2. Holding the right to import and export, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and several national patents.
3. The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic presses, and a complete set of inspection tools.
4. Products include J55, K55, N801/Q, L80, P110 oil and casing pipes, couplings, short connections, and transition joints.
5. We have a large inventory of high corrosion-resistant oil and casing pipes such as 80S, 90S, 110S, L801Cr/3Cr/13Cr, with about 2,000 tons in stock throughout the year.
6. We undertake special sealing thread processing and copper plating services for oil well pipes and petroleum accessories, including straight connection, wedge, double-step, and variable-pitch threads, with tens of thousands of special thread components produced annually
Fast delivery, high quality, and cost-saving for customers. Our vision: To build an international petroleum pipeline equipment enterprise with integrity and innovation. We welcome leaders and friends from all walks of life to visit and explore cooperation opportunities.
1. Since 2008, with a registered capital of 11.18 million yuan and an 8,000 square meter workshop, the annual foreign trade turnover is 20 million yuan.
2. Holding the right to import and export, ISO9001 quality system certification, API 5CT certification from the American Petroleum Institute, and several national patents.
3. The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic presses, and a complete set of inspection tools.
4. Products include J55, K55, N801/Q, L80, P110 oil and casing pipes, couplings, short connections, and transition joints.
5. We have a large inventory of high corrosion-resistant oil and casing pipes such as 80S, 90S, 110S, L801Cr/3Cr/13Cr, with about 2,000 tons in stock throughout the year.
6. We undertake special sealing thread processing and copper plating services for oil well pipes and petroleum accessories, including straight connection, wedge, double-step, and variable-pitch threads, with tens of thousands of special thread components produced annually.
Grand Victory 's C110 short connections are the ideal choice for oil well pipeline connections. Made from N80 steel grade material, they ensure the strength and stability of connections. Our short connection products are designed with anti-wear and corrosion-resistant technology, greatly enhancing their service life and making them suitable for various oil and gas extraction environments.
Product Features
C110 Short Connection Design: Specifically designed for gas and oil conveyance, the C110 short connection can effectively connect oil well pipelines and ensure connection efficiency. The design of the short connection can effectively reduce pressure loss at the connection point, enhancing the overall system's working efficiency.
N80 Steel Grade Material: Made from N80 steel grade material, it provides exceptional strength and durability, suitable for high-pressure environments. N80 short connections can effectively prevent pipeline rupture and deformation when subjected to high pressure.
L80 Oil Well Pipe Thread Protectors: Our products also include L80 oil well pipe thread protectors, which can effectively protect the threads, extend service life, and reduce maintenance costs. The design of the protectors ensures that the threads are not easily damaged during transportation and installation.
Oil Casing: What are 13Cr Pipe and Super 13Cr Material? 13Cr Oil Casing 114.3mm
1. Established: 2008, with 17 years of experience; registered capital of 11.18 million RMB; workshop area of 8000 square meters; annual foreign trade revenue of 20 million RMB.
2. Certifications: Holds import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates.
3. Equipment: The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic testers, and various inspection instruments.
4. Product Types: Offers J55, K55, N80, L80, P110 oil casings, couplings, short joints, and transition joints.
5. Inventory: Maintains a stock of high corrosion-resistant oil casings such as 80S, 90S, 110S, 1Cr, 3Cr, and 13Cr, with approximately 2,000 tons available year-round.
6. Special Processing: Provides custom processing for direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services, producing tens of thousands of special couplings each year.
Tianjin Grand Victory Petroleum Equipment Co., Ltd. is a comprehensive enterprise engaged in production, processing, sales, technical research and development, and inventory storage. Located in Jinghai District, Tianjin, China, it was founded in 2008 with a registered capital of 11.18 million RMB. The company holds import and export rights, ISO 9001 quality system certification, API 5CT certification from the American Petroleum Institute, and multiple national patent certificates. The production workshop is equipped with high-precision CNC lathes, thread rolling machines, hydraulic testers, and various inspection instruments.
- Product Range: Includes oil casings such as J55, K55, N80, L80, P110, as well as couplings, short joints, and transition joints; high corrosion-resistant oil casings such as 80S, 90S, 110S, L80, 1Cr, 3Cr, and 13Cr are stocked year-round, maintaining an inventory of around 2,000 tons.
- Processing Capability: Undertakes custom processing of direct connection types, tapered types, double-step types, and variable thread types for special sealing threads, as well as copper plating services.
Oil casings and oil pipes are critical components in oil and gas extraction, while the design of short joints, fittings, quick connectors, and integral connectors further enhances the connection efficiency and reliability of the pipes. TP110S oil pipe is a high-strength pipe suitable for various complex oil and gas extraction environments. The design of various fittings, quick connectors, and integral connectors improves the connection efficiency and reliability of the pipes. The quick connector design allows for easier connections, reducing installation time and labor intensity. The integral connector, through its integrated design, enhances the connection strength and sealing performance of the pipes.
Item Details
Product Overview L80 oil casing is a high corrosion-resistant pipe specifically designed for oil and gas extraction in harsh environments. The external diameter of this product is 139.7mm, capable of meeting the demands of high-temperature and high-pressure oil wells, particularly excelling in environments containing carbon dioxide and hydrogen sulfide. L80 casing meets API 5CT standards and is widely used in the petroleum and natural gas industry.
Technical Specifications - Outer Diameter: 139.7mm - Wall Thickness: 7.11mm (various specifications available upon request) - Material: L80 alloy steel - Yield Strength: 552 MPa - Tensile Strength: 655 MPa - Length: Standard length is 9.14 meters (30 feet), can be customized. - Connection Types: Various connection methods available to adapt to different downhole conditions. - Temperature Range: Suitable for use in environments ranging from -20°C to +80°C. - Corrosion Resistance: Optimized for environments containing HS and CO.
Product Features The L80 casing has excellent corrosion resistance, especially suitable for use in high-acid environments. Its unique alloy composition allows it to effectively extend service life when facing corrosive media. Additionally, the high-strength design of the L80 casing enables it to withstand higher downhole pressures, ensuring the safety of oil and gas extraction. Through advanced manufacturing processes and strict quality control, the L80 casing demonstrates exceptional performance in mechanical properties and durability. The surface of the L80 casing undergoes special anti-corrosion treatment, significantly reducing the corrosion rate and extending the service life of the pipe.
Oil Pipe Specifications: 1.05'', 1.315'', 1.66'', 1.9'', 23/8'', 27/8'', 31/2'', 4'', 41/2''.
Steel Grades: J55, K55, N801, N80Q, L801, P110, L803CR, 9CR, 13CR, P11013CR (Super 13CR), 28CR, etc.
Coupling Types: NU (Flat Coupling), EU (Thickened Coupling).
Production Process: Hot rolling.
Product Use: Used for drilling oil wells.
Packaging Method: Steel straps/steel frames, or according to customer requirements.
Annual Supply Volume: 300,000 tons.
We can also process various specifications of short joints according to customer requirements, including EU thickened, double male short joints, casing short joints, high pressure adjustment short joints, conversion joints/XOver, couplings, and thread protectors. Processing forms include PIN X PIN (double male short joint) and PIN X BOX (one male and one female finished short joint), with processable lengths ranging from 2 feet (ft) to 20 feet (ft); end processing forms can be EUE (thickened) or NUE (not thickened).
Our company strictly implements API Spec 5CT standards and the ISO 9001 quality management system. We have manufacturing equipment, including CNC lathes, CNC coupling machines, automatic flaw detectors, CNC hydrostatic pressure testing machines, automatic marking machines, automatic painting and labeling machines, 16ton cranes, ultrasonic thickness gauges, and automatic feeding systems for production and testing.
While meeting domestic market demands, we provide high quality products and services to numerous enterprises and have established long term supplier relationships with countries and regions such as Saudi Arabia, the United Arab Emirates, Sudan, Kuwait, and Turkey.
Corporate Purpose: Integrity, Pragmatism, Mutual Benefit, Win Win.
Management Philosophy: Based on humane management, we implement modern management throughout all departments and processes of the enterprise; market oriented, adhering to integrity and legality, and achieving win win situations with customers.
We always adhere to the principle of prioritizing people before tasks, insisting on equipment and scientific management as the foundation, and providing customers with high quality products. With a complete marketing network and service system, we ensure satisfactory service for our customers. We look forward to working together to create brilliance!
1. HC110 Oil Casing Q125, 10th Edition, Oil Well Tubing, Special-Purpose Casing, C90, 90SS, L80-1
Annual Supply Capacity: 300,000 tons.
Quality Standards: We strictly adhere to the API Spec 5CT standard and the ISO 9001 international quality management system. We possess manufacturing equipment, including CNC lathes, CNC threaders, automatic flaw detectors, CNC hydrostatic testers, automatic marking machines, automatic painting and marking machines, 16-ton cranes, ultrasonic thickness gauges, and automatic feeding systems.
Market Reach: While meeting domestic market demands, we serve numerous enterprises with high-quality products and have established long-term supplier relationships with countries and regions such as Saudi Arabia, the UAE, Sudan, Kuwait, and Turkey.
Corporate Philosophy:
Mission: Integrity, Pragmatism, Mutual Benefit, Win-Win.
Management Philosophy: Based on humanized management and modern management practices, we are market-oriented, law-abiding, and committed to win-win cooperation with customers.
Principle: We always adhere to the principle of "being a good person first, then doing good work." We insist on using advanced equipment and scientific management to provide high-quality products and a comprehensive marketing and service network to ensure customer satisfaction.
2. Blowdown Tubing, Blowdown Pipeline, Small Tubing for Gas Wells, 42.16mm Tubing, Thickened Tubing, Large-End Short Couplings, Rotary Short Couplings
In the process of oil and natural gas extraction, blowdown tubing and blowdown pipelines are key equipment to ensure operational safety and efficiency. Our blowdown tubing and pipeline products, specifically designed for gas wells, are manufactured from high-quality materials and feature high strength, corrosion resistance, and excellent sealing properties.
Custom Processing:
We can process various specifications of tubing short couplings according to customer requirements, including EU upset, double male short couplings, casing short couplings, highpressure adjustment short couplings, conversion couplings/XOver, couplings, and thread protectors. Available processing forms include PIN X PIN (double male short couplings) and PIN X BOX (finished short couplings with one male and one female end). Processing lengths range from 2 feet (ft) to 20 feet (ft); end forms available include EUE (upset) and NUE (nonupset).
Quality Standards:
We strictly adhere to API Spec 5CT and the ISO 9001 quality management system. We possess manufacturing equipment, including CNC lathes, CNC threaders, automatic flaw detectors, CNC hydrostatic testers, automatic marking machines, automatic painting and marking machines, 16ton cranes, ultrasonic thickness gauges, and automatic feeding systems.
Market Reach:
While meeting domestic market demands, we serve numerous enterprises with highquality products and have established longterm supplier relationships with countries and regions such as Saudi Arabia, the UAE, Sudan, Kuwait, and Turkey.
Corporate Philosophy:
Mission: Integrity, Pragmatism, Mutual Benefit, WinWin.
Management Philosophy: Based on humanized management and modern management practices, we are marketoriented, lawabiding, and committed to winwin cooperation with customers.
Principle: We always adhere to the principle of "being a good person first, then doing good work." We insist on using advanced equipment and scientific management to provide highquality products and a comprehensive marketing and service network to ensure customer satisfaction. We look forward to working together with you to achieve greater success!
Oil Casing: An Essential Component in Oil Drilling
Welcome to the Online Store of Tianjin Longkailai Petroleum Equipment Co., Ltd.
Execution Standards: API-5CT, API-5L, API-5B, API 5D
Company Products: Tubing couplings, tubing collars, thickened tubing couplings, flush joint tubing couplings, variable thread tubing couplings, extended tubing couplings, single-end threaded tubing couplings, internal thread tubing couplings, tubing connectors, variable thread tubing connectors, variable diameter tubing couplings, tubing conversion connectors, tubing coupling stock, tubing nipples, tubing short sections, thickened tubing nipples, tubing lifting nipples, double male tubing nipples, heavy-weight tubing nipples/short sections, lifting tubing nipples/short sections, variable thread tubing nipples/short sections, variable diameter tubing short sections/nipples, tubing conversion connectors, single-end threaded tubing nipples, coupling stock, thickened tubing, EUE thickened petroleum tubing, high-pressure tubing nipples, [casing short sections], [casing nipples], [double male casing short sections], [double male casing nipples], [casing variable thread couplings], [casing variable thread connectors], [external thread casing nipples/short sections], [casing conversion connectors], [high-pressure casing nipples], [casing thread protectors (cap)], [casing coupling stock], [finished casing products], casing couplings, coupling stock, short round thread casing couplings, long round casing couplings, tapered casing couplings, variable thread casing couplings, casing connectors, casing collars, variable diameter casing couplings, eccentric casing couplings, casing conversion connectors, API casing, single-end threaded casing couplings, coupling stock.
Casing Specifications: 4-1/2â??-20â?? with thread types such as STC (Short Round), LTC (Long Round), BTC (Trapezoidal Thread), etc.
Tubing Specifications: 1.05-4-1/2 with end processing forms NU (non-upset), EU (upset).
Custom Processing: We can process couplings, nipples, variable thread connectors, etc., in various lengths and sizes according to order drawings.
Processing Forms: Straight connection tubing nipples/connectors, PIN * PIN (double male nipples), PIN * BOX (one male one female finished nipples), BOX * PIN (one female one male finished nipples).
Materials: H40, J55, K55, N80, L80, C-90, C95, T95, P110, Q125, 13Cr-80, 13Cr-110, Super 13Cr, Nickel-based alloy tubing, etc.
Drill Pipe Specifications: 2-3/8-6-5/8, etc.
Materials: E-75, X95, G105, S135, etc.
Company Philosophy: We adhere to the management philosophy of people-oriented and customer-first. Based on advanced equipment and scientific management, we provide high-quality products for customers. With a complete marketing network and service system, we ensure satisfactory service for customers. Let's join hands to create a brilliant future!
2. Petroleum Tubing: Specifications 1.05-4-1/2 with End Processing Forms NU (Non-Upset) and EU (Upset)
Casing Specifications: 4-1/2-20 with thread types such as STC (Short Round), LTC (Long Round), BTC (Trapezoidal Thread), etc.
Tubing Specifications: 1.05-4-1/2 with end processing forms NU (Non-Upset) and EU (Upset).
Custom Processing: We can process couplings, nipples, variable thread connectors, etc., in various lengths and sizes according to order drawings.
Processing Forms: Straight connection tubing nipples/connectors, PIN * PIN (double male nipples), PIN * BOX (one male one female finished nipples), BOX * PIN (one female one male finished nipples).
Materials: H40, J55, K55, N80, L80, C-90, C95, T95, P110, Q125, 13Cr-80, 13Cr-110, Super 13Cr, Nickel-based alloy tubing, etc.
Drill Pipe Specifications: 2-3/8-6-5/8, etc.
Thickening Forms: Internal thickening, external thickening, internal and external thickening. Custom-made products such as drill pipe variable thread connectors, drill pipe nipples, double male drill pipe nipples, and drill pipe conversion connectors in various lengths according to orders or drawings.
Materials: E-75, X95, G105, S135, etc.
Company Philosophy: We adhere to the management philosophy of people-oriented and customer-first. Based on advanced equipment and scientific management, we provide high-quality products for customers. With a complete marketing network and service system, we ensure satisfactory service for customers. Let's join hands to create a brilliant future!
Special Threaded Tubing Nipples/Connectors: PIN * PIN Double Male Nipples and PIN * BOX Male-Female Finished Nipples
coupling stock, thickened tubing, EUE thickened petroleum tubing, high-pressure tubing nipples, [casing short sections], [casing nipples], [double male casing short sections], [double male casing nipples], [casing variable thread couplings], [casing variable thread connectors], [external thread casing nipples/short sections], [casing conversion connectors], [high-pressure casing nipples], [casing thread protectors (cap)], [casing coupling stock], [finished casing products], casing couplings, coupling stock, short round thread casing couplings, long round casing couplings, tapered casing couplings, variable thread casing couplings, casing connectors, casing collars, variable diameter casing couplings, eccentric casing couplings, casing conversion connectors, API casing, single-end threaded casing couplings, coupling stock.
Casing Specifications: 4-1/2-20 with thread types such as STC (Short Round), LTC (Long Round), BTC (Trapezoidal Thread), etc.
Tubing Specifications: 1.05-4-1/2 with end processing forms NU (Non-Upset) and EU (Upset).
Materials: E-75, X95, G105, S135, etc.
Company Philosophy: We adhere to the management philosophy of people-oriented and customer-first. Based on advanced equipment and scientific management, we provide high-quality products for customers. With a complete marketing network and service system, we ensure satisfactory service for customers. Let's join hands to create a brilliant future!
Diameter 2 3/8 to 4 1/2
Weights As per API 5CT
Lengths 18"; 16";24" etc standard
Grades J-55,K55,N80Q,L80& P110 etc
Connections EUE,NUE PIN X BOX,PIN X PIN
Standard As per API 5CT
Our Services/Warranty
As a professional manufacturer, we provide follow services:
1.. Lower price
2. ONE year warranty and life time maintenance
3. In time delivery.
4. High Quality assurance..
Market Competition and Development Trends
Currently, market competition for oil and casing connectors and direct-connect tubing mainly focuses on product quality, price, and service. Some enterprises in Shandong and other regions have gradually secured a market position through technological innovation and cost control. Looking ahead, with the continuous advancement of oil and gas extraction technologies, the market demand for direct-connect tubing will further increase. Companies will place greater emphasis on product intelligence and environmental protection, enhancing performance and reliability through the development of new materials and connection technologies.
Summary
Oil and casing connectors and direct-connect tubing, as vital connecting components in oil and gas extraction, provide strong assurance for the stable operation of oil and gas wells with their reliable performance and advanced technology. Manufacturers in regions such as Fujian, Guangdong, and Shanxi continuously innovate and control quality to supply high-quality products to the market. As market demand grows and technology advances, oil and casing connectors and direct-connect tubing are set to play an even more significant role in future oil and gas extraction.
