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
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.
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!
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.
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.
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!
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.
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.
