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ASME/ANSI B16.5 Class 900 WN

Nominal Pipe Size  Outside Diameter of Flange Diameter of Raised Face Thickness of Flanges Min. Diameter of Hub Hub Diameter Beginning of Chamfer Length Through Hub Bore Diameter of Bolt Circle Diameter of Bolt Holes Number of Bolts Approxi-mate Weight kgs
NPS O R tf X A Y B W I n  
1/2 120 34.9 22.3 38 21.3 60 15.8 82.6 22.2 4 1.86
3/4 130 42.9 25.4 44 26.7 70 21.0 88.9 22.2 4 2.55
1 150 50.8 28.6 52 33.4 73 26.6 101.6 25.4 4 3.78
1 1/4 160 63.5 28.6 64 42.2 73 35.1 111.1 25.4 4 4.40
1 1/2 180 73.0 31.8 70 48.3 83 40.9 123.8 28.6 4 6.12
2 215 92.1 38.1 105 60.3 102 52.5 165.1 25.4 8 10.86
2 1/2 245 104.8 41.3 124 73.0 105 62.7 190.5 28.6 8 15.20
3 240 127.0 38.1 127 88.9 102 77.9 190.5 25.4 8 13.53
4 290 157.2 44.5 159 114.3 114 102.3 235.0 31.8 8 22.14
5 350 185.7 50.8 190 141.3 127 128.2 279.4 34.9 8 36.14
6 380 215.9 55.6 235 168.3 140 154.1 317.5 31.8 12 47.04
8 470 269.9 63.5 298 219.1 162 202.7 393.7 38.1 12 80.64
10 545 323.8 69.9 368 273.0 184 254.5 469.9 38.1 16 118.62
12 610 381.0 79.4 419 323.8 200 304.7 533.4 38.1 20 158.37
14 640 412.8 85.8 451 355.6 213 336.5 558.8 41.3 20 180.07
16 705 469.9 88.9 508 406.4 216 387.3 616.0 44.5 20 217.98
18 785 533.4 101.6 565 457.0 229 437.9 685.8 50.8 20 292.21
20 855 584.2 108.0 622 508.0 248 488.9 749.3 54.0 20 362.66
24 1040 692.2 139.7 749 610.0 292 590.9 901.7 66.7 20 665.98
Basic requirements for Material and Fitting

Requirements are valid for normal case, in special case you have to contact the technical department.

Slip-On Flanges, SO Flange
Common flange types
Anchor flange
Specialty flange
150LB Carbon steel forged flange
Material Grades
Custom pipe flanges can be manufactured from a wide variety of material grades.



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