ASME/ANSI B16.5 Class 600 SW

Nominal Pipe Size Outside Diameter of Flange Diameter of Raised Face Thickness of Flanges Min. Diameter of Hub Length Through Hub Bore Depth of Socket Diameter of Bolt Circle Diameter of Bolt Holes Number of Bolts Approxi-mate Weight kgs
NPS O R tf X Y B1 B2 D W I n
1/2 95 34.9 12.7 38 21 22.2 15.8 10 66.7 15.9 4 0.67
3/4 115 42.9 14.3 48 24 27.7 20.9 11 82.6 19.1 4 1.11
1 125 50.8 15.9 54 25 34.5 26.6 13 88.9 19.1 4 1.43
1 1/4 135 63.5 17.5 64 25 43.2 35.1 14 98.4 19.1 4 1.79
1 1/2 155 73.0 19.1 70 29 49.5 40.9 16 114.3 22.2 4 2.57
2 165 92.1 20.7 84 32 61.9 52.5 17 127.0 19.1 8 3.01
2 1/2 190 104.8 23.9 100 37 74.6 62.7 19 149.2 22.2 8 4.55
3 210 127.0 27.0 117 41 90.7 77.9 21 168.3 22.2 8 6.18

Standards, Dimensions & Weight of SW Flanges

The Socket Welding Flange is attached to the pipe by a fillet weld around the hub of the flange.

This is eliminates any restriction in flow when using a socket welding flange.

Details of Lap Joint Flange

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Flanges specification, Standard and identification

Below you will find a short description and definition of each type, completed with an detailed image.