Search
Close this search box.

American welding neck flange (WN flange)

American welding neck flange (WN flange)

  • Certificate: ISO
  • Standard: ASME B16.5, GB/T 9124.2
  • Material: Forged carbon steel ASTM A105,
    Forged SS ASTM A182, F304 / F316L
  • Flange facing: FF / RF
  • Rated pressure: Class 150 / 300, etc.
  • Surface: Oiled / hot dip galvanized,
    Pickling white, etc.

Product Details

American welding neck flange (WN flange) features a hub whose size matches the pipe for butt welding connection, so the stress is transferred from the flange to the pipe. It is mainly used for high pressure and temperature applications.

Available size (Class 150)

Size Flange OD O (mm) Bolt circle dia. W (mm) Bolting (No. x hole) Ref. No.
1/2″ / DN15 / 21.3mm 90 60.3 4 x 5/8″ N8601-150
3/4″ / DN20 / 26.7mm 100 69.9 4 x 5/8″ N8602-150
1″ / DN25 / 33.4mm 110 79.4 4 x 5/8″ N8603-150
1-1/4″ / DN32 / 42.2mm 115 88.9 4 x 5/8″ N8604-150
1-1/2″ / DN40 / 48.3mm 125 98.4 4 x 5/8″ N8605-150
2″ / DN50 / 60.3mm 150 120.7 4 x 3/4″ N8606-150
2-1/2″ / DN65 / 73.0 / 76.1mm 180 139.7 4 x 3/4″ N8607-150
3″ / DN80 / 88.9mm 190 152.4 4 x 3/4″ N8608-150
4″ / DN100 / 114.3mm 230 190.5 8 x 3/4″ N8609-150
5″ / DN125 / 141.3mm 255 215.9 8 x 7/8″ N8610-150
6″ / DN150 / 165.1 / 168.3mm 280 241.3 8 x 7/8″ N8611-150
8″ / DN200 / 219.1mm 345 298.5 8 x 7/8″ N8612-150
10″ / DN250 / 273.0mm 405 362.0 12 x 1″ N8613-150
12″ / DN300 / 323.8mm 485 431.8 12 x 1″ N8614-150
14″ / DN350 / 355.6mm 535 476.3 12 x 1-1/8″ N8615-150

Note: Please download our catalog for more available sizes.

Ask For A Quick Quote

Email us at info@tpmcsteel.com or use the form below. Normally you will be replied within 2 hours during support hours.