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 RF Weld Neck Flanges,ASTM A105,Class 150-2500,3 Inch

    Model No.: DM-WN-Flange-073
    China ASTM A105 WN Flange Manufacturer offers ASTM A105 Weld Neck Flange, DN 80, PN 20, ANSI B16.5, Raised Face.
  2. EN1092-1 Weld Neck Flanges,ASTM A182,Class 150,3 Inch

    Model No.: DM-WN-Flange-074
    China ASTM A182 F316L WN Flange Manufacturer offers ASTM A182 F316L WN Flange, 150 LB (PN 16), 3 Inch (DN 80), Standard EN1092-1 Type11.
  3. ANSI B16.5 RF Weld Neck Flanges,ASTM A105,Class 300,1/2-18 Inch

    Model No.: DM-WN-Flange-075
    China ANSI B16.5 Weld Neck Flange Manufacturer offers ANSI B16.5 Weld Neck Flange, ASTM A105, DN 350 (14 Inch), PN 50 (300#), SCH 40, RF.
  4. ASME B16.5 RF Long Weld Neck Flanges,ASTM A182,Class 150,1/2-24 Inch

    Model No.: DM-WN-Flange-076
    China LWN Flange Manufacturer offers ASTM A182 Long Weld Neck Flange, SCH XXS, 3 inch, 150LB, ASME B16.5, 230mm neck length, Raised Face.
  5. ASME B16.47 RF Weld Neck Flanges,ASTM A105,Class 150,30 Inch

    Model No.: DM-WN-Flange-077
    China ASME B16.47 WN Flange Manufacturer offers ASME B16.47 Welding Neck Flange, DN 750, PN 20, Raised Face, Standard ASME B16.47 Ser.B.
  6. ASME B16.5 RTJ Weld Neck Flanges,ASTM A694,Class 600,20 Inch

    Model No.: DM-WN-Flange-078
    China WN Flange Manufacturer offers ASTM A694 B16.5 WN Flange, RTJ Face (Raised Type Joint), SCH.XS, ASME B16.5, DN500 (20 inch), PN100 (600#).
  7. ASTM A536 RF Ductile Iron Grooved Weld Neck Flanges,1/2-24 Inch

    Model No.: DM-WN-Flange-079
    China Grooved WN Flange Manufacturer offers Ductile Iron Grooved WN Flange with red painting, ASTM A536, 150mm, RF Ends, UL & FM & CE.
  8. ASME B16.5 RF Welding Neck Flanges,ASTM A182,Class 900,10 Inch,SCH 80

    Model No.: DM-WN-Flange-080
    China Welding Neck Flange Manufacturer offers ASTM A182 Welding Neck Flange, 10 Inch (DN 250), 900LBS, SCH80, ASTM A182 F304L, RF Ends.
  9. ASME B16.47 Black Coating Weld Neck Flanges,ASTM A105,36 Inch,SCH 30

    Model No.: DM-WN-Flange-081
    China Black Coating WN Flange Manufacturer Offers ASTM A105 Weld Neck Flange, ASME B16.47 Series A, 36 Inch (DN900), SCH30.
  10. ASME B16.5 Welding Neck Flanges,ASTM A182,Class 150,6 Inch

    Model No.: DM-WN-Flange-082
    China ASTM A182 WN Flange Manufacturer Offers ASTM A182 F316 WN Flange, ASTM A182 Flange, Class PN 20, DN 150, Standard ASME B16.5.
  11. ASME B16.5 RF Weld Neck Flanges,ASTM A182,Class 600,10 Inch,SCH 80S

    Model No.: DN-WN-Flange-085
    China Weld Neck Flange Manufacturer: A182 F316L Material, Size 10 Inch, Pressure 600 LBS, Flanged RF, ASME B16.5, SCH 80S Wall Thickness.
  12. ANSI B16.5 RF Weld Neck Flanges,ASTM A182,Class 900,8 Inch,SCH 80S

    Model No.: DM-WN-Flange-086
    China ANSI B16.5 WN Flange Manufacturer: ANSI B16.5 Weld Neck Flanges, ASTM A182 F51, Class 900 (PN150), 8 Inch (DN200), SCH80S, Flanged RF Ends.

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