ASME/ANSI B16.5 Class 600 SO

The Slip-on flange has a low hub because the pipe slips into the flange prior to welding. It is welded both inside and out to provide suffcient strength and prevent leakage. 
Slip-on flanges are all bored slightly larger than the O.D. of the pipe. They are preferred over welding neck flanges bu many users due to their lower intial cost, but final intallation cost is probably not much less than that of the welding neck flange because of the additional welding involved.
Nominal Pipe Size Outside Diameter of FlangeDiameter of Raised FaceThickness of Flanges Min.Diameter of HubLength Through HubBoreDiameter of Bolt CircleDiameter of Bolt HolesNumber of BoltsApproximate Weight kgs
NPSORtfXYBWIn 
1/29534.914.3382222.266.715.940.74
3/411542.915.9482527.782.619.141.21
112550.817.5542734.588.919.141.56
1 1/413563.520.7642943.298.419.142.11
1 1/215573.022.3703249.5114.322.242.97
216592.125.4843761.9127.019.183.64
2 1/2190104.828.61004174.6149.222.285.26
3210127.031.81174690.7168.322.287.08
3 1/2230139.735.013349103.4184.225.488.99
4275157.238.115254116.1215.925.4814.83
5330185.744.518960143.8266.728.6824.46
6355215.947.722267170.7292.128.61228.78
8420269.955.627376221.5349.231.81243.77
10510323.863.534386276.2431.834.91671.35
12560381.066.740092327.0489.034.92084.95
14605412.869.943294359.2527.038.120100.05
16685469.976.2495106410.5603.241.320141.69
18745533.482.6546117461.8654.044.520175.13
20815584.288.9610127513.1723.944.524222.87
24940692.2101.6718140616.0838.250.824313.75
Note: 7 mm raised face regularly furnished on Classes 150 and 300 unless otherwise ordered.

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Pipe fitting

Pipe fitting
Pipe fitting is work that involves the installation or repair of pipes or tubes. Pipes and tubes are necessary for a wide range of reasons.

Flanges General

Flanges General
A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system.