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Weld Neck Flange Class 150 Dimensions

Weld Neck Flange Class 150
Weld Neck Flange Drawing
Size in Inch Size in mm Outer Diameter Flange Thickness Hub OD Weld Neck OD Welding Neck Length Bore RF Diameter RF Height PCD Weld Face
A B C D E F G H I J
1/2 15 90 9.6 30 21.3 46 Welding Neck bore is derived from the pipe schedule 34.9 2 60.3 1.6
3/4 20 100 11.2 38 26.7 51 42.9 2 69.9 1.6
1 25 110 12.7 49 33.4 54 50.8 2 79.4 1.6
1 1/4 32 115 14.3 59 42.2 56 63.5 2 88.9 1.6
1 1/2 40 125 15.9 65 48.3 60 73 2 98.4 1.6
2 50 150 17.5 78 60.3 62 92.1 2 120.7 1.6
2 1/2 65 180 20.7 90 73 68 104.8 2 139.7 1.6
3 80 190 22.3 108 88.9 68 127 2 152.4 1.6
3 1/2 90 215 22.3 122 101.6 70 139.7 2 177.8 1.6
4 100 230 22.3 135 114.3 75 157.2 2 190.5 1.6
5 125 255 22.3 164 141.3 87 185.7 2 215.9 1.6
6 150 280 23.9 192 168.3 87 215.9 2 241.3 1.6
8 200 345 27 246 219.1 100 269.9 2 298.5 1.6
10 250 405 28.6 305 273 100 323.8 2 362 1.6
12 300 485 30.2 365 323.8 113 381 2 431.8 1.6
14 350 535 33.4 400 355.6 125 412.8 2 476.3 1.6
16 400 595 35 457 406.4 125 469.9 2 539.8 1.6
18 450 635 38.1 505 457.2 138 533.4 2 577.9 1.6
20 500 700 41.3 559 508 143 584.2 2 635 1.6
24 600 815 46.1 663 610 151 692.2 2 749.3 1.6

Applications of Weld Neck Flange Class 150

Weld Neck Flanges Class 150 are widely used in industries where strength, safety, and leak-proof connections are required. Moreover, they are preferred in piping systems that handle low to medium pressures.

  • Oil & Gas Industry: These flanges are applied in crude oil, natural gas, and petroleum pipelines. As a result, they ensure long-lasting and reliable operations.
  • Petrochemical Plants: They are suitable for process piping where resistance to pressure and temperature fluctuations is needed. Furthermore, their smooth bore minimizes pressure drop.
  • Power Plants: Weld neck flanges are used in cooling water lines, steam pipelines, and boiler connections. Consequently, they enhance efficiency and reduce maintenance.
  • Water Treatment Plants: They are commonly installed in desalination systems, wastewater treatment units, and water supply lines. In addition, their corrosion-resistant materials ensure durability.
  • Chemical Industry: Since many chemicals are corrosive, weld neck flanges provide a secure and reliable joint. Therefore, they are essential in chemical transfer systems.
  • Food & Beverage Industry: Stainless steel weld neck flanges are utilized in sanitary and hygienic pipelines. Similarly, the pharmaceutical industry adopts them to maintain contamination-free processes.
  • HVAC Systems: They are used in chilled water, condenser, and cooling tower pipelines. Moreover, they provide a strong connection that withstands thermal cycling.
  • Marine & Shipbuilding: Weld neck flanges Class 150 are suitable for seawater and general marine pipelines. Thus, they contribute to long-lasting ship systems.