Weld Neck Flange

A weld neck flange consists of a circular fitting with a protruding rim around the circumference which is generally machined from a forging, these flanges are typically butt welded to a pipe. The rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts. Such flanges are suitable for use in hostile environments that have extremes of temperature, pressure or other sources of stress.

Weld neck pipe flanges are typically provided with a raised face, flat face, or RTJ facing. When a raised face is necessary for weld neck pipe flanges, the standard height is 1/16 inch for weld neck pipe flanges fewer than 400#. For weld neck pipe flanges of 400# and up, the standard weld neck pipe flange raised face height is 1/4 inch.

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  1. ANSI B16.5 Weld Neck Flange, ASTM A182 F304, PN20, DN300, RF End

    Model No.: LF 17 BF 04
    ANSI B16.5 Weld Neck Flange Supplier in China: ANSI B16.5 Weld Neck Flange, Stainless Steel, ASTM A182 F304, Pressure PN20, DN300, Raised Face End.
  2. Carbon Steel Weld Neck Flange, DN700, PN20, A105, ASME B16.47 A

    Model No.: LF 17 WNF 58
    Carbon Steel Weld Neck Flange Supplier in China: Carbon Steel Weld Neck Flange, DN700, Pressure PN20, ASTM A105, ASME B16.47 A, Raised Face.
  3. ANSI B16.5 WN Flange, A182 F51, DN200, PN150, SCH 80 RF

    Model No.: LF 17 WNF 58
    ANSI B16.5 WN Flange Supplier in China: ANSI B16.5 WN Flange, RF, ASTM A182 F51, Size DN200, Class Rating PN150, Wall Thickness SCH 80.
  4. ASTM A105 Weld Neck Flange, ANSI B16.5, 10IN, 300LB, SCH STD

    Model No.: LF 17 WNF 57
    ASTM A105 Weld Neck Flange Factory in China: ASTM A105 Weld Neck Flange, ANSI B16.5, Size 10IN, Pressure 300LB, SCH STD, RF 125-AARH End.
  5. ASTM A105N WN Flanges, 10IN, CL150, SCH 40

    Model No.: LF 16 WNF 56
    ASTM A105N WN Flanges Manufacturer in China: ASTM A105N WN Flanges, 10IN, Pressure CL150, Thickness SCH 40, Black Painting Surface Treatment.
  6. ASTM A694 F60 Weld Neck Flange, CL600, 30IN, Black Coating

    Model No.: LF 16 WNF 55
    ASTM A694 F60 Weld Neck Flange Manufacturer in China: ASTM A694 F60 Weld Neck Flange, Pressure CL600, 30IN, Black Coating Surface Treatment.
  7. ASTM A105 Weld Neck Flanges, 300LB, 12IN, Black Coating

    Model No.: LF 16 WNF 54
    ASTM A105 Weld Neck Flanges Manufacturer in China: ASTM A105 Weld Neck Flanges, Pressure 300LB, Size 12IN, Black Coating Surface Treatment.
  8. ANSI B16.5 Weld Neck Flange, CS A105, CL150, 4IN, Black Treatment

    Model No.: LF 16 WNF 53
    ANSI B16.5 Weld Neck Flange Manufacturer in China: ANSI B16.5 Weld Neck Flange, CS A105, Pressure CL150, Size 4IN, Black Surface Treatment.
  9. ASTM A105 Weld Neck Flange, ASME B16.5, 10IN, 300 LB, SCH STD

    Model No.: LF 16 WNF 52
    Chinese ASTM A105 Weld Neck Flange Manufacturer Provides ASTM A105 Weld Neck Flange, ASME B16.5, Size 10IN, Pressure 300 LB, Wall Thickness SCH STD.
  10. ANSI B16.5 Weld Neck Flange, ASTM A105, 2IN, CL150, SCH 80, RF Ends

    Model No.: LF 16 WNF 51
    Chinese ANSI B16.5 Weld Neck Flange Manufacturer Supplies ANSI B16.5 Neck Flange, ASTM A105, Size 2IN, 160mm Length, Pressure CL150, RF Ends.
  11. ASTM A182 F304 Weld Neck Flange, ANSI B16.5, 2IN, SCH 80, RF Ends

    Model No.: LF 16 WNF 50
    Chinese ASTM A182 F304 Weld Neck Flange Manufacturer Supplies ASTM A182 F304 Weld Neck Flange, ANSI B16.5, Size 2IN, Length 220mm, SCH 80, RF Ends.
  12. ANSI B16.5 Weld Neck Flange A105 DN300 SCH60 PN50

    Model No.: LF 16 WNF 49
    China ANSI B16.5 Weld Neck Flange Manufacturer offers ANSI B16.5 Weld Neck Flange, ASTM A105, DN300 Size, SCH 60, PN50.

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