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Reference Table Details

Cast Iron Companion Flanges and Bolts - Extra Heavy

Extra Heavy Standard Cast Iron Companion Flanges and Bolts
(for working pressures up to 250 psi steam, 400 psi WOG)

Pipe Size Flange Diam. Bolt Circle Diam. Nbr. of Bolts Bolt Diam. Bolt Length
1.000 4.875 3.500 4 0.625 2.250
1.250 5.250 3.875 4 0.625 2.500
1.500 6.125 4.500 4 0.750 2.500
2.000 6.500 5.000 8 0.625 2.500
2.500 7.500 5.875 8 0.750 3.000
3.000 8.250 6.625 8 0.750 3.250
3.500 9.000 7.250 8 0.750 3.250
4.000 10.000 7.875 8 0.750 3.500
5.000 11.000 9.250 8 0.750 3.750
6.000 12.500 10.625 12 0.750 3.750
8.000 15.000 13.000 12 0.875 4.250
10.000 17.500 15.250 16 1.000 5.000
12.000 20.500 17.750 16 1.125 5.500
14.000 OD 23.000 20.250 20 1.125 5.750
16.000 OD 25.500 22.500 20 1.250 6.000
18.000 OD 28.000 24.750 24 1.250 6.250
20.000 OD 30.500 27.000 24 1.250 6.750
24.000 OD 36.000 32.000 24 1.500 7.500
30.000 OD 43.000 39.250 28 1.750 8.500
36.000 OD 50.000 46.000 32 2.000 9.500
42.000 OD 57.000 52.750 36 2.000 10.000
48.000 OD 65.000 60.750 40 2.000 11.000

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