Long weld neck flanges (LWN) are similar to weld neck flanges, with the exception that the neck (tapered hub) is extended and acts like a boring extension.
Long weld neck flanges are generally used on vessels, columns or barrels. These flange types are available also in the heavy barrel (HB) and equal barrel (E) types
A long weld neck flange LWN flange is a type of flange that has a long tapered neck that extends from the flange face to the pipe This longer neck provides more support to the pipe at the weld joint making it a more robust and reliable connection LWN flanges are typically used in highpressure and hightemperature applications such as in the oil and gas industry
Technical Specifications
Dimensions 12 to 24 in diameter
The neck length is typically 15 to 2 times the flange diameter
Materials Carbon Steel Stainless Steel or Alloy Steel
Pressure ratings 150 psi to 2500 psi
Temperature ratings 200F to 1000F
Types RFFFRTJ
LWN flanges are used in a variety of applications including
Oil and gas industry
Chemical industry
Power generation
Water treatment
HVAC
The benefits of using LWN flanges include
Increased strength and reliability
Longer service life
Wider range of applications
Easier to assemble and disassemble
Long-necked flanges, also known as LWN flanges, are similar to the standard weld neck flanges but the neck is considerably longer. This type of flange is often used as a nozzle for a barrel or a column. They can be classified later as standard type, heavy gun type, variable body type and whole body type. These flanges are kind of exclusive for the reason of their uncomplicated connectivity with other pipes. Where standard weld neck flanges are used extensively for pipes, long weld neck flanges (often abbreviated to LWN) are used in high pressure and high (or fluctuating) temperature situations primarily in the oil and gas industry. The long neck guides the pipe into the flange itself and provides reinforcement that a standard weld neck flange cannot. This reinforcement is very important for safety in high pressure industrial, commercial and even residential systems.
Uses of long-necked flanges are primarily on vessels where an elongated neck is required. Long-necked flanges (LWN) are primarily utilised on vessels where an elongated neck is required. This is considered a specialty flange because of the protruding neck or hub, which acts as a boring extension.
The conical collar helps reduce the thickness of the steel and appears to be a pipe extension. LWN steel flanges are used primarily in the chemical and petroleum industries, as well as in commercial and residential buildings ASME 16.47 anf asme 16.5 series of long weld flanges are used exclusively for situations in high levels of stress and fluctuating temperatures.
Flanges used for steel pipeâ??s connection are various. So we should make our flanges lead to the purpose of our steel pipes like seamless or erw steel pipe. So we need to do some lesson before purchase.
Function of long weld neck flanges is predominantly on vessels. We know that vessels have some places need an extended neck so flange can do this job for us. The purpose of tapered neck is to reduce the thickness of the steel and it then seems to be a pipe extension. The combination of steel pipe and long weld neck flange would make the whole engineering project easy and convenient. Utilized in the chemical and petroleum industries, as well as commercial and residential buildings that experience high levels of stress and temperatures that fluctuate, flanges have played an important part during our daily life.
With regard to our wellheeled industrial experience RFP India offers a total range of Long Weld Neck Flanges We provide different types of Long Weld Neck Flanges such as Stainless Steel Long Neck Flanges Carbon Steel Long Neck Flanges Alloy Steel Long Neck Flanges Nickel Alloy Long Neck Flanges Copper Alloys Long Neck Flanges Low Temperature Carbon Steel Long Neck Flanges Duplex amp Super Duplex Steel Long Neck Flanges etc Comes in dissimilar grades sizes specifications and standards these neck flanges are being supplied from the mosttrustworthy vendors by our experts
Meanwhile these flanges are kind of exclusive for the reason of their uncomplicated connectivity with other pipes
RANGE
15 NB to 60 1500NB in 150 LBS 300 LBS 600 LBS 900 LBS 1500 LBS 2500 LBS ASA 150 ASA 300 PN 6101625 4064100160 ETC available with NACE MR 0175
SIZE
15NB to 60 1500NB
CLASS PRESSURE
Class Pressure 150 300 600 900 1500 2500 PN6 PN10 PN16 PN25 PN40 PN64
DIMENSION
B165 BS4504 EN1092 B1636 B1647 B1648 MSS SP44
STD
STD ANSI Flanges ASME Flanges DIN Flanges EN Flanges BS Flanges API JIS NACE etc
FEATURES
Dimensional accuracy Corrosion resistance High efficiency Excellent finish Durable
Stainless Steel Long Weld Neck Flanges
Standard ASTM ASME ASA 182
Grade F 304 304L 304H 309S 309H 310S 310H 316 316TI 316H 316L 316LN 317 317L 321 321H 347 347H 904L
Duplex Steel Long Weld Neck Flanges
Standard ASTM ASME ASA 182
Grade F 44 F 45 F51 F 53 F 55 F 60 F 61
Aluminium Long Weld Neck Flanges
Standard ASTM B247 B361
Grade 2024 6061 6063 6101 7075
Titanium Long Weld Neck Flanges
Standard ASTM B381
Grade Grade 1 Grade 2 Grade 4 Grade 5 Grade 6 Grade 7 Grade 9 Grade 19 Grade 23
Carbon Steel Long Weld Neck Flanges
Standard ASTM A 105A694 A350 LF3A350 LF2
Grade F42465256606570
Low Temperature Carbon Steel Long Weld Neck Flanges
Standard ASTM A 350 LF2 A350 LF3
Alloy Steel Long Weld Neck Flanges
Standard ASTM A182
Grade F1F5F9F11F22F91
Copper Alloy Long Weld Neck Flanges
Standard ASTM ASME SB 61 62 151 152
Grade UNS NO C 70600 CU NI 9010 C 71500 CU NI 7030 C 71640
Nickel Alloy Long Weld Neck Flanges
Standard ASTM ASME SB 564 160 472
Nickel 200 UNS N02200 Â Â Nickel 201 UNS N02201 Â Â Monel 400 UNS N04400
Monel K500 UNS N05500 Â Â Inconel K600 UNS N06600 Â Â Inconel 601 UNS N06601
Inconel 625 UNS N06625 Â Â Inconel 800 UNS N08800 Â Â Inconel 800H UNS N08810
Inconel 825 UNS N08825 Â Â Hastelloy C276 UNS N10276 Â Â Alloy 20 UNS N08020
Test Certificate
Manufacturer Test Certificate as per EN 10204 31
Alloy Steel Long Welding Neck Flanges, F5, F9, F11, F22, F91 grade blind, slip-on, long welding neck, socketweld, lapjoint, threaded flanges
supply to USA, Europe, Spain, United Kingdom, Germany, Far East, UAE, Saudi Arabia (KSA), New Orleans, Houston, Texas, Iran (Tehran), Korea, Asia, Italy, France, Singapore, Malaysia, Doha, Qatar, Thailand, Australia, Canada, Fiji, Mauritius, etc
Marina Fan
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Made available by us is a wide and commendable range of Weld Neck Flanges (WNRF). All our products comes with welding neck, which is hot formed from a circular section of steel plate having a small co-axial hole in the center due to which these are durable. These products find their wide applications in engineering and construction industries because of rustproof construction, excellent finishing and lightweight.
Specifications:
Stainless Steel: ASTM A 182 and A 240
Grade: F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H and 904L
Duplex Stainless Steel: UNS S31803 and 2205
Super Duplex Stainless Steel: UNS S32750
Carbon Steel: ASTM A 105 and ASTM A 181
Alloy Steel: ASTM A 182, GR F1, F11, F22, F5, F9 and F91
Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22 and C276
Copper Alloys: Copper, Brass & Gunmetal
Size: 1/8\\\\\\\" NB to 48\\\\\\\"NB
Class: 150, 300, 400, 600, 900, 1500 & 2500
Made available by us is a wide and commendable range of Weld Neck Flanges (WNRF). All our products comes with welding neck, which is hot formed from a circular section of steel plate having a small co-axial hole in the center due to which these are durable. These products find their wide applications in engineering and construction industries because of rustproof construction, excellent finishing and lightweight.
Specifications:
Stainless Steel: ASTM A 182 and A 240
Grade: F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H and 904L
Duplex Stainless Steel: UNS S31803 and 2205
Super Duplex Stainless Steel: UNS S32750
Carbon Steel: ASTM A 105 and ASTM A 181
Alloy Steel: ASTM A 182, GR F1, F11, F22, F5, F9 and F91
Nickel Alloys: Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22 and C276
Copper Alloys: Copper, Brass & Gunmetal
Size: 1/8" NB to 48" NB
Class: 150, 300, 400, 600, 900, 1500 & 2500
Product Details:
Usage/Application Oil Industry
Size 10-20 inch, 20-30 inch, 1-5 inch, 0-1 inch
Material Standard ANSI B16.5, ASTM A182, ASTM A351, ASTM A105
Rated Pressure (Bar) 2500
Country of Origin Made in India
FLANGE15 NB UP TO 600 NB IN 150 LBS , 300 LBS, 400 LBS , 600 LBS , 900 LBS , 1500 LBS , 2500 LBS / TABLE 2.5 , TABLE 6 , TABLE 10, TABLE 16,TABLE 25 , TABLE 40, TABLE 64, TABLE 160, TABLE 320, TABLE 400FORMSLIP ON , SOCKET WELD , BLIND , LAPPED , SCREWED , WELD NECK , REDUCING , SPECTACLE ,SLIP ON BOSS , PLATE , PLATE BLANK , SCREWED BOSS.
Nickel & Copper Alloy
Nickel Alloy
ASTM / ASME SB 564 UNS 2200 ( NICKEL 200 ) , UNS 4400 (MONEL 400 ) , , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 ( INCONEL 601 ) , UNS 6625 (INCONEL 625) , UNS 10276 ( HASTELLOY C 276 )ASTM / ASME SB 160 UNS 2201 (NICKEL 201 )ASTM / ASME SB 472 UNS 8020 ( ALLOY 20 / 20 CB 3 )
Copper Alloy
ASTM / ASME SB 61 UNS NO. C 92200 & ASTM / ASME SB 62 UNS NO. C 83600.ASTM / ASME SB 151 UNS NO. 70600 , 71500 , C 70600 ( CU -NI- 90/10) , C 71500 ( CU -NI- 70/30)ASTM / ASME SB 152 UNS NO C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200.
Product Details:
Usage/Application Oil Industry
Size 10-20 inch, 20-30 inch, 1-5 inch, 0-1 inch
Material Standard ANSI B16.5, ASTM A182, ASTM A351, ASTM A105
Rated Pressure (Bar) 2500
Country of Origin Made in India
FLANGE15 NB UP TO 600 NB IN 150 LBS , 300 LBS, 400 LBS , 600 LBS , 900 LBS , 1500 LBS , 2500 LBS / TABLE 2.5 , TABLE 6 , TABLE 10, TABLE 16,TABLE 25 , TABLE 40, TABLE 64, TABLE 160, TABLE 320, TABLE 400FORMSLIP ON , SOCKET WELD , BLIND , LAPPED , SCREWED , WELD NECK , REDUCING , SPECTACLE ,SLIP ON BOSS , PLATE , PLATE BLANK , SCREWED BOSS.
Nickel & Copper Alloy
Nickel Alloy
ASTM / ASME SB 564 UNS 2200 ( NICKEL 200 ) , UNS 4400 (MONEL 400 ) , , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 ( INCONEL 601 ) , UNS 6625 (INCONEL 625) , UNS 10276 ( HASTELLOY C 276 )ASTM / ASME SB 160 UNS 2201 (NICKEL 201 )ASTM / ASME SB 472 UNS 8020 ( ALLOY 20 / 20 CB 3 )
Copper Alloy
ASTM / ASME SB 61 UNS NO. C 92200 & ASTM / ASME SB 62 UNS NO. C 83600.ASTM / ASME SB 151 UNS NO. 70600 , 71500 , C 70600 ( CU -NI- 90/10) , C 71500 ( CU -NI- 70/30)ASTM / ASME SB 152 UNS NO C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200.
A weld neck flange is a type of flange that is joined to a piping system by butt welding. The flange consists of a circular fitting with a protruding rim around the circumference. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. The flange also has a long tapered hub that gradually meets the wall thickness of the pipe or fitting.
Technical Specifications:
Materials: Carbon steel, stainless steel, duplex steel, alloy steel, etc.
Dimensions: 1/2" to 24"
Class range: Class 150 to 2500 (ANSI/ASME B16.5)
Type: RF,FF,RJT
PN range: PN 2.5 to PN 250
Hub length: Short hub (SH), Long hub (LH), Extra long hub (XH)
Finish: Black, mill finish, painted, etc.
Advantages of Weld Neck Flanges:
Increased strength and durability
Reduced stress concentration
Smooth transition from flange thickness to pipe or fitting wall thickness
Easy to radiograph for flaw detection
Can be used in high pressure and high temperature applications
Applications:
Power plants
Chemical plants
Oil and gas industries
Water treatment plants
HVAC systems
Other industrial applications
Metal Aids India a accredited with AN ISO 9001: 2015, 14001: 2015, OHSAS 18001 & PED Certified Company and was established in since 2010. We take the pleasure to introduce ourselves as a largest Manufacture & Exporter of all type of industries products like Flange, Forging Flange, Component Flanges, Precision Different Component Flanges in different shape & size (as per client drawing & specification) etc in CNC Lathe & Milling Machine (VMC)
Description: Stainless Steel Flange
Specification: ASTM / ASME B16.5, ASME N 16.47 SERIES
Size: 1/2" To 48" (15 NB To 1500 NB)
Type : Socket Weld, Slip On, Blind, Lapped, Screwed, Weld Neck, Long Weld Neck, Reducing, Spectable, Ring Joint Flanges
Class : 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
Form : Circle, Square, Plate, Ring, Flat
Grade :
Specification: ASTM / ASME B16.5, ASME N 16.47 SERIES
Metal Aids India a accredited with AN ISO 9001: 2015, 14001: 2015, OHSAS 18001 & PED Certified Company and was established in since 2010. We take the pleasure to introduce ourselves as a largest Manufacture & Exporter of all type of industries products like Flange, Forging Flange, Component Flanges, Precision Different Component Flanges in different shape & size (as per client drawing & specification) etc in CNC Lathe & Milling Machine (VMC)
Description: Stainless Steel Flange
Specification: ASTM / ASME B16.5, ASME N 16.47 SERIES
Size: 1/2\" To 48\" (15 NB To 1500 NB)
Type : Socket Weld, Slip On, Blind, Lapped, Screwed, Weld Neck, Long Weld Neck, Reducing, Spectable, Ring Joint Flanges
Class : 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
Form : Circle, Square, Plate, Ring, Flat
Grade :
Specification: ASTM / ASME B16.5, ASME N 16.47 SERIES
Metal Aids India a accredited with AN ISO 9001: 2015, 14001: 2015, OHSAS 18001 & PED Certified Company and was established in since 2010. We take the pleasure to introduce ourselves as a largest Manufacture & Exporter of all type of industries products like Flange, Forging Flange, Component Flanges, Precision Different Component Flanges in different shape & size (as per client drawing & specification) etc in CNC Lathe & Milling Machine (VMC)
Description: Stainless Steel Flange
Specification: ASTM / ASME B16.5, ASME N 16.47 SERIES
Size: 1/2" To 48" (15 NB To 1500 NB)
Type : Socket Weld, Slip On, Blind, Lapped, Screwed, Weld Neck, Long Weld Neck, Reducing, Spectable, Ring Joint Flanges
Class : 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
Form : Circle, Square, Plate, Ring, Flat
Grade :
Specification: ASTM / ASME B16.5, ASME N 16.47 SERIES
Forged Carbon Steel Welding-Neck 150lbs Flange
company profile:
Shandong Zouping Wangda Forging And Pressing Co., Ltd. is a professional manufacturer of flanges companies, the company mainly produces American Standard, DIN, UNI, JIS, KS, BS, EN1092-1, SABS standard flange, while the production of drawings based on customer special flange.
1, You send us the drawing or smaple
2, We make the sample and sand to you, or give you the quotation(determined by the price)
3, IF You think the sample is good or the price will be acceptable, you should pay us 30% deposit
4, When the work is done, we will take photoes for you, and then you pay the balance
5, We deliver the products to you.
FAQ:
1.What kind of material is the product material ?
   Carbon Steel
2.What kinds of type can you supply ?
   Welding neck Flange Â
  Slip on
  Blind flange Â
  Long welding neck flange
  Lap joint flange
  Socket welding
  Threaded flange Â
3.What kinds of package can you provide ?
  crates or Pallet
4.What's you monthly production capacity ?
  2000MTS/ Month
5.Which is the nearest port ?
  Qingdao Sea Port
6.Do you accept third party inspection ?
  We accept .
Please send your message to us if you have any questions or inquiries, we will reply you within 12 hours !
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