• Weld Neck Flanges, WN Flange, Welding-Neck Fittings

Weld Neck Flanges

Weld Neck Flanges are flanges that designed to be joined to a piping system by butt welding. the WN Flange is relatively expensive because of its long neck, but is preferred for high stress applications. The neck, or hub, transmits stresses to the pipe, reducing stress concentrations at the base of the Welding-Neck flanges. The gradual transition of thickness from the base of the hub to the wall thickness at the butt weld provides important reinforcement of the Weld Neck flange. The bore of the Weld-Neck flange matches the bore of the pipe, reducing turbulence and erosion.

Weld Neck Flange manufacturer Landee supplies Weld Neck Flanges, WN Flanges, Welding-Neck Fittings in carbon steel, Stainless Steel, alloy steel, etc.

Weld Neck Flanges Products List

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LD 16 WNF 35

China ASTM A105N WN Flange Manufacturer Landee Supplies ASTM A105N Welding Neck Flange, 10 Inch, Class 150 LB, SCH 40, Black Painting.

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LD 16 WNF 34

China A694 F60 Weld Neck Flange Manufacturer Landee Supplies ASTM A694 F60 Weld Neck Flange, 30 Inch, Class 600 LB, Raised Face Flange, Black Coating.

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LD 16 WNF 27

China ASTM A182 F316 WN Flange Manufacturer Landee offers ASTM A182 F316 Weld Neck Flange, 150LB, 12 Inch, SCH 40, RF, generally applied in machine.

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LD 16 WNF 25

China ASTM A182 F316L WN Flange Manufacturer Landee offers ASTM A182 F316L WN Flange, PN16 (150 LB), DN80 (3 Inch), Standard EN1092-1 Type 11.

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LD 16 WNF 22

China ASTM A105 WN Flange Manufacturer Landee offers ASTM A105 Welding Neck Flange, 30 Inch, 150 LB, Raised Face, Standard ASME B16.47 Ser.B.

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LD 16 WNF 30

China ASME B16.5 WN Flange Manufacturer Landee Offers ASME B16.5 WN Flange, A105, Size 10 Inch, Pressure 300LB, Wall Thickness SCH STD.

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LD 16 WNF 20

China Grooved WN Flange Manufacturer Landee offers Ductile Iron Grooved WN Flange with red painting, ASTM A536, 150mm, RF Ends, UL & FM & CE.

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LD 13 SSWNF 06

Weld Neck Flanges manufacuturer Landee supplies Stainless Steel 1.4404 EN 1092-1 WN Flange, size DN 100, pressure PN 16, wall thickness 8.0 mm.

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LD 13 WNF 06

Weld Neck Flange manufacturer Landee supplies ASTM A182 F5 WN RF Flange, SCH 40, 6 inch, Class 300#, meeting ASME B16.5 standard.

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LD 13 WNF 03

Weld neck flange manufacturer Landee supplies Forged A182 F316 WN Flange featured 300#,RF,STD,DN 200, 1/2 - 56 Inch, meeting API,ANSI,BS,JIS,UNI,MSS SP.

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LD 13 WNF 01

China weld neck flange manufacturer Landee suuplies Alloy Steel ASTM A182 F9 weld neck flanges, butt welded, Schedule XS, with size of 2 inch, 300 LB RF.

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LD 014-FL02

Carbon Steel Weld Neck Flange Manufacturer Landee Supplies Carbon Steel Weld Neck Flanges, Carbon Steel Flange, Carbon WN Flange, Carbon Steel WN Flange for pipeline systems.

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LD 010-FL1

Weld Neck Flange Manufacturer Landee Supplies Weld Neck Pipe Flanges, Steel Weld Neck Flanges made from Carbon Steel, Stainless Steel, Alloy Steel, etc.

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LD 013-FL9

Stainless Steel Weld Neck Flange Manufacturer Landee Supplies Stainless Steel Weld Neck Flanges, SS WN Flange Used in Oil & Gas, Offshore Projects, etc.

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LD 010-FL04

RTJ WN Flange Manufacturer Landee Supplies Ring Type Joint Weld Neck Flanges (RTJ WN Flanges) model with Standard Marking and Black Painting.

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LD 013-FL17

.Long WN Flange Manufacturer Landee Supplies 1/2 to 56 inches Long Weld Neck Flanges, LWN Flanges Available in ANSI, BS, JIS, UNI, MSS and SP Standards.

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LD 012-FL

Forged Flange Manufacturer Landee Supplies Golden Coating Forged Flanges, Yellow Forged Flanges, Made of A105, LF2 and F304 and other Steel.

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LD 011-FL

Forged WN Flange Manufacturer Landee Supplies DN 15 to DN 1,400 mm Forged WN Flanges, Forged Weld Neck Flanges  with ANSI Class 150 to 2,500 Pressure Units.

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LD 013-FL1

Forged Steel Weld Neck Flange Manufacturer Landee supplies Forged Steel Weld Neck Flanges, Forged Steel WN Flanges with Pressure ANSI class 150 to 2,500.

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LD 010-FL01

Forged Steel Flange Manufacturer Landee supplies Industrial Forged Steel Flanges Used in: Oil, Offshore, Water, Ship, Natural Gas, Power, Pipe Projects etc.

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LD 013-FL8

Weld Neck Flange Manufacturer Landee Supplies Yellow Weld Neck Flanges, Golden painting Weld Neck Flanges with Yellow Golden Anti-corrosive Painting.

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LD-20241204-WNF-01

The Carbon Steel Weld Neck Flange, manufactured as per ASME B16.5 and ASTM A105 standards, is a 4-inch (DN100) flange with a Class 150 LB and PN20 pressure rating. It features a standard wall thickness (SCH STD) and a raised face design, ensuring compatibility and durability in various piping systems.

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LD-20241112-WNF-02

The Carbon Steel Weld Neck Flange, produced in China, meets ASME B16.47 Series B and ASTM A105 standards. With a 30-inch size, Class 150 LB pressure rating, and SCH STD wall thickness, it features a raised face for improved sealing. This flange is designed for high-pressure applications, offering durability and reliability in pipeline connections.

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LD-20241112-WNF-01

The ASME B16.5 Weld Neck Flange, manufactured from Carbon Steel ASTM A105, is a 30-inch Class 150 LB flange designed for high-pressure applications. With a DN750 and PN20 rating, it features a raised face and a wall thickness of SCH STD. This flange is ideal for ensuring strong, leak-resistant connections in pipelines, offering reliability and durability for a range of industrial applications.

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LD-20241030-WNF-01

The ASTM A182 F321 Weld Neck Flange is a forged stainless steel SS 321 product, designed for reliable performance in demanding applications. With a diameter of 2 inches (DN50) and a Class 150 LB rating (PN20), it features a wall thickness of SCH 160 and a raised face, ensuring optimal sealing and strength. This flange is suitable for a variety of piping systems, providing excellent corrosion resistance and durability.

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LD-20241017-WNF-01

This ASME B16.5 welded neck flange is made from low temperature carbon steel ASTM A350 LF2, ensuring exceptional strength and performance in challenging conditions. With a 12-inch diameter and a Class 1500 LB rating, it is designed for high-pressure applications. The flange features ring type joint end connections for a secure seal and reliable installation.

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LD-20241004-WNF-01

This ASTM B564 UNS N06625 weld neck flange is manufactured in accordance with ASME B16.5 standards, ensuring high quality and reliability. With a size of 4 inches and a pressure rating of Class 900 LB, it features a wall thickness of 6.02 mm for enhanced durability. The flange is equipped with RTJ (Ring Type Joint) ends, making it suitable for high-pressure applications.

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LD-20240919-WNF-02

The carbon steel weld neck flange, manufactured in China to ASME B16.5 standards, is made from ASTM A105 material. It has a size of 16 inches (DN400), a Class 150 LB rating, and a PN20 pressure rating. Featuring a raised face and a wall thickness of SCH STD, this flange provides a robust and reliable connection.

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LD-20240919-WNF-01

The stainless steel weld neck flanges, manufactured to ASME B16.5 standards, are made from ASTM A182 F316 and F316L materials. They are 1-1/2 inches in size (DN40), with a Class 300 LB rating and PN50 pressure rating. Featuring a wall thickness of SCH 80S and a raised face design, these flanges ensure robust performance and a secure, reliable connection in various piping systems.

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LD-20240910-WNF-01

Our plant in China manufactures ASTM A182 F321 stainless steel weld neck flanges, conforming to ANSI B16.5 standards. Available in 1-1/2 inch size with a Class 2500 LB rating, these flanges feature a raised face and a wall thickness of SCH XXS, ensuring durability and high performance in demanding applications.