ASME/ANSI B16.5 Class 300 BL

Nominal Pipe Size  Outside Diameter of Flange Diameter of Raised Face Thickness of Flanges Min. Diameter of Bolt Circle Diameter of Bolt Holes Number of Bolts Approximate Weight kgs
NPS O R tf W I n  
1/2 95 34.9 12.7 66.7 15.9 4 0.64
3/4 115 42.9 14.3 82.6 19.1 4 1.06
1 125 50.8 15.9 88.9 19.1 4 1.42
1 1/4 135 63.5 17.5 98.4 19.1 4 1.86
1 1/2 155 73.0 19.1 114.3 22.2 4 2.66
2 165 92.1 20.7 127.0 19.1 8 3.21
2 1/2 190 104.8 23.9 149.2 22.2 8 4.88
3 210 127.0 27.0 168.3 22.2 8 6.89
3 1/2 230 139.7 28.6 184.2 22.2 8 8.88
4 255 157.2 30.2 200.0 22.2 8 11.68
5 280 185.7 33.4 235.0 22.2 8 15.77
6 320 215.9 35.0 269.9 22.2 12 21.41
8 380 269.9 39.7 330.2 25.4 12 34.37
10 445 323.8 46.1 387.4 28.6 16 53.90
12 520 381.0 49.3 450.8 31.8 16 79.14
14 585 412.8 52.4 514.4 31.8 20 106.23
16 650 469.9 55.6 571.5 34.9 20 139.30
18 710 533.4 58.8 628.6 34.9 24 175.78
20 775 584.2 62.0 685.8 34.9 24 222.78
24 915 692.2 68.3 812.8 41.3 24 341.50

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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