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Reference Table Details

Cast Iron Companion Flanges and Bolts - Standard

Standard Cast Iron Companion Flanges and Bolts
(for working pressures up to 125 psi steam, 175 psi WOG)

Size Flange Diam. Bolt Circle Nbr. of Bolts Bolt Size Bolt Length
0.75 3.500 2.500 4 0.375 1.375
1.00 4.250 3.125 4 0.500 1.500
1.25 4.625 3.500 4 0.500 1.500
1.50 5.000 3.875 4 0.500 1.750
2.00 6.000 4.750 4 0.625 2.000
2.50 7.000 5.500 4 0.625 2.750
3.00 7.500 6.000 4 0.625 2.500
3.50 8.500 7.000 8 0.625 2.500
4.00 9.000 7.500 8 0.625 2.750
5.00 10.000 8.500 8 0.750 3.000
6.00 11.000 9.500 8 0.750 3.000
8.00 13.500 11.750 8 0.750 3.250
10.00 16.000 14.250 12 0.875 3.500
12.00 19.000 17.000 12 0.875 3.750
14.00 21.000 18.750 12 1.000 4.250
16.00 23.500 21.250 16 1.000 4.250

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