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 Golden Alloy Steel Welding Neck Flanges,ASTM A182,Class 600,1/2-24 Inch

    Model No.: DM-WN-Flange-111
    China Golden Alloy Steel Welding Neck Flange: ASTM A182 F11, F22 Golden Welding Neck Flanges, PN100, ANSI B16.5, BS 4505, JIS B2311, DN15-DN600.
  2. JIS B2220 Stainless Steel Weld Neck Flanges,ASTM A182,Class 150,24 Inch

    Model No.: DM-WN-Flange-112
    China A182 Stainless Steel Weld Neck Flange: ASTM A182 F304, F304L Weld Neck Flanges, SS, 150LB (PN20), 24 Inch, JIS B2220, HG 20595, SABS 1123.
  3. ASTM A350 Carbon Steel Weld Neck Flanges,Class 2500,1/2-24 Inch

    Model No.: DM-WN-Flange-113
    China A350 Carbon Steel Weld Neck Flange Manufacturer: ASTM A350 LF1, LF2, LF3, CL1, CL2 Weld Neck Flanges, 2500LB, PN420, 1/2-24 Inch, DN15-DN600.
  4. GOST 12821 Alloy Steel Weld Neck Flanges,ASTM A182,Class 900,1/2-24 Inch

    Model No.: DM-WN-Flange-114
    China ASTM A182 Alloy Steel Weld Neck Flange: ASTM A182 F11, F22 Weld Neck Flanges, 900LB, PN150, GOST 12821, GOST 12822, 1/2-24 Inch, DN15-DN600.
  5. JIS B2311 Forged Steel Weld Neck Flanges,ASTM A694,Class 150-2500,26-56 Inch

    Model No.: DM-WN-Flange-115
    China ASTM A694 Forged Steel Weld Neck Flange Manufacturer: JIS B2311, MSS SP-44 Weld Neck Flanges, ASTM A694 F310, F321, 150LB-2500LB, 26-56 Inch.
  6. JIS B2312 SS Long Weld Neck Flanges,ASTM A182,Class 150-2500,1/2-56 Inch

    Model No.: DM-WN-Flange-116
    China ASTM A182 Stainless Steel Long Weld Neck Flange: ASTM A182 F316, F316L, F316H, F310, F321 Weld Neck Flanges, 150LB-2500LB, 1/2-56 Inch, JIS B2312.
  7. ASME B16.5 RF Golden Carbon Steel Weld Neck Flanges,ASTM A105,Class 150,4 Inch,SCH 80

    Model No.: DM-WN-Flange-117
    China ASTM Golden Carbon Steel WN Flange Manufacturer: ASTM A105 F12 Weld Neck Flanges, Class 150, 4 Inch, SCH 80, Golden Coated, ASME B16.5 Standard.
  8. DIN 2576 RF Stainless Steel Weld Neck Flanges,ASTM A216,Class 2500,1/2-12 Inch

    Model No.: DM-WN-Flange-118
    China RF Stainless Steel Weld Neck Flange: ASTM A216 F44, S31254 Weld Neck Flanges, DIN 2576, DIN 2628, ASME B16.47, SCH 20S-80S, 2500LB, 1/2-12 Inch.
  9. ANSI B16.5 Forged Steel Weld Neck Flanges,ASTM A516,Class 300,1/2-24 Inch

    Model No.: DM-WN-Flange-119
    China Forged Steel Weld Neck Flange: ANSI B16.5, PN50 WN Flange, ASTM A516 F11, F22, BS 4505, JIS B2311, DN15-600, SCH 10, SCH 20, SCH 30, SCH 40.
  10. ASME B16.5 Forged Steel Golden Weld Neck Flanges,Class 900,1/2-24 Inch

    Model No.: DM-WN-Flange-120
    China Forged Steel Flange Manufacturer Offers Forged Steel Weld Neck Flanges, Golden Coating, 900#(PN150), ASME B16.5, ANSI B16.5, 1/2-24 Inch.
  11. ASME B16.5 RF Weld Neck Flanges,ASTM A182,Class 150,16 Inch

    Model No.: DM-WN-Flange-145
    ASME B16.5 Weld Neck Flange Supplier in China: ASME B16.5 Weld Neck Flange, Stainless Steel ASTM A182 F316, Pressure PN20, Size DN450, RF Ends.
  12. ASME B16.5 RF Weld Neck Flanges,ASTM A182,Class 600,10 Inch

    Model No.: DM-WN-Flange-146
    ASME B16.5 WN Flange Manufacturer in China: ASME B16.5 Weld Neck Flange, Stainless Steel ASTM A182 F316, Class PN100, Size DN250, RF Ends.

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