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 A182,Class 1500,2 Inch,SCH 40S

    Model No.: DM-WN-Flange-087
    China A182 F51 Weld Neck Flange Manufacturer: ASTM A182 F51 Weld Neck Flange, 2 Inch, Pressure 1500, Standard ANSI B16.5, Flanged RF, SCH 40S.
  2. ASME B16.5 RF Weld Neck Flanges,ASTM A350,Class 300,12 Inch,SCH STD

    Model No.: DM-WN-Flange-088
    China ASME B16.5 Weld Neck Flange Manufacturer: ASME B16.5 WN Flange, ASTM A350 LF2, 12 Inch (DN300), Class 300 LB (PN50), SCH STD, Raised Face.
  3. ANSI B16.47A RF Weld Neck Flanges,ASME A105N,Class 600,26 Inch,SCHXS

    Model No.: DM-WN-Flange-089
    China ASME A105N WN Flange Manufacturer: ASME A105N Weld Neck Flange´╝łWN Flange), 26 Inch (DN650), Class 600 (PN100), ANSI B16.47A, RF, Schedule SCHXS.
  4. ANSI B16.47A RF Weld Neck Flanges,ASTM A694,Class 600,26 Inch

    Model No.: DM-WN-Flange-090
    China ANSI B16.47A WN Flange Manufacturer: ANSI B16.47A WN Flanges, RF, 26 Inch (DN650), 600 LB (PN100), ASTM A694 F60, Sand Blast with Anti Rust Oil.
  5. ANSI B16.5 RF Weld Neck Flanges,ASTM A105,Class 600,12 Inch

    Model No.: DM-WN-Flange-091
    China ANSI B16.5 Weld Neck Flange Manufacturer: ANSI B16.5 Weld Neck Flanges, ASTM A105, 12 Inch (DN300), Schedule STD, Raised Face, Class 600 LB (PN100).
  6. ASME B16.5 RF Weld Neck Flanges,ASTM A105N,Class 600,24 Inch,SCH 80

    Model No.: DM-WN-Flange-092
    China ASTM A105N Weld Neck Flange Manufacturer: ASTM A105N Weld Neck Flanges, Raised Face, 24 Inch (DN600), Class 600 LB (PN100), SCH 80, ASME B16.5.
  7. ASME B16.5 RF Weld Neck Flanges,ASTM A105,Class 600,6 Inch,SCH 80

    Model No.: DM-WN-Flange-093
    China ASTM A105 WN Flange Manufacturer: Carbon Steel ASTM A105 WN Flanges, RF, Butt Welded End, 6 Inch (DN150), 600 LB (PN100), SCH 80, Black Coating.
  8. ANSI B16.5 Weld Neck Flanges,ASTM A105,Class 150,3 Inch

    Model No.: DM-WN-Flange-094
    China ASTM A105 Golden Weld Neck Flange Manufacturer: ASTM A105 Golden Weld Neck Flanges, Golden Painting, SCH STD, 150 LB (PN20), 3 Inch, ANSI B16.5.
  9. ANSI B16.5 RF Forged Welding Neck Flanges,ASTM A105,Class 300,20 Inch,SCH STD

    Model No.: DM-WN-Flange-095
    China ANSI Forged Welding Neck Flange Manufacturer: ANSI B16.5 Welding Neck Flanges, ASTM A105, SCH STD, 300LB (PN50), 20 Inch (DN500), Black Painted.
  10. MSS SP-44 RF Forged Steel Weld Neck Flanges,ASTM A105,Class 300,30 Inch,SCH STD

    Model No.: DM-WN-Flange-096
    China MSS SP-44 Forged Steel WN Flange Provider: ASTM A105, Forged Steel, Raised Face Weld Neck Flanges, Schedule STD, 300LB (PN50), 30 Inch (DN750).
  11. ASME B16.5 RF Weld Neck Flanges,ASTM A182,Class 300,6 Inch,SCH 40

    Model No.: DM-WN-Flange-097
    China A182 F5 RF Weld Neck Flange Provider: ASTM A182 F5, Class 300 (PN50), 6 Inch (DN150) Weld Neck Flanges, Raised Face, ASME B16.5, Schedule 40.
  12. JIS B2220 Weld Neck Flanges,ASTM A182,Class 150-2500,8 Inch

    Model No.: DM-WN-Flange-098
    China ASTM A182 F316 Weld Neck Flange: JIS B2220, JIS B2212 Weld Neck Flanges, ASTM A182 F316, Size DN200 (8 Inch), 150LB-2500LB (PN20-PN420).

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