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Flanges Dimension BS-10

TABLE D
For Working Steam Pressure upto 50 lbs per sq. Inch
Nominal Pipe Size O. D. of pipe O. D. P. C. D. No. of bolt Dia of bolt Thickness
1/2" 21.3 95.3 66.7 4 12.7 4.8
3/4" 26.7 101.6 73.0 4 12.7 4.8
1" 33.4 114.3 82.6 4 12.7 4.8
1.1/4" 42.2 120.7 87.3 4 12.7 6.4
1.1/2" 48.3 133.4 98.4 4 12.7 6.4
2" 60.3 152.4 114.3 4 15.9 7.9
2.1/2" 73.0 165.1 127.0 4 15.9 7.9
3" 88.9 184.2 146.1 4 15.9 9.5
3.1/2" 101.6 203.2 165.1 4 15.9 9.5
4" 114.3 215.9 177.8 4 15.9 9.5
5" 141.3 254.0 209.6 8 15.9 12.7
6" 168.3 279.4 228.6 8 15.9 12.7
7" 190.5 304.8 260.4 8 15.9 12.7
8" 219.1 336.6 292.1 8 15.9 12.7
9" 244.5 368.3 323.9 8 15.9 15.9
10" 273.0 406.4 355.6 8 19.1 15.9
12" 323.9 457.2 406.4 12 19.1 15.9
14" 355.6 527.1 469.9 12 22.2 19.1
16" 406.4 577.9 520.7 12 22.2 19.1
18" 457.2 641.4 584.2 12 22.2 22.2
20" 508.0 704.9 641.4 16 22.5 25.4
24" 609.6 825.5 755.7 16 25.4 28.6
TABLE E
For Working Steam Pressure upto 100 lbs per sq. Inch
Nominal Pipe Size O. D. of pipe O. D. P. C. D. No. of bolt Dia of bolt Thickness
1/2" 21.3 95.3 66.3 4 12.7 6.4
3/4" 26.7 101.6 73.0 4 12.7 6.4
1" 33.4 114.3 82.6 4 12.7 7.1
1.1/4" 42.2 120.7 87.3 4 12.7 7.9
1.1/2" 48.3 133.4 98.4 4 12.7 8.7
2" 60.3 152.4 114.3 4 15.9 9.5
2.1/2" 73.0 165.1 127.0 4 15.9 10.3
3" 88.9 184.2 146.1 4 15.9 11.1
3.1/2" 101.6 203.2 165.1 8 15.9 11.9
4" 114.3 215.9 177.8 8 15.9 12.7
5" 141.3 254.0 209.6 8 15.9 14.3
6" 168.3 279.4 228.6 8 19.1 17.5
7" 190.5 304.8 260.4 8 19.1 19.1
8" 219.1 336.6 292.1 8 19.1 19.1
9" 244.5 368.3 323.9 12 19.1 20.6
10" 273.0 406.4 355.6 12 19.1 22.2
12" 323.9 257.2 406.4 12 22.2 25.4
14" 355.6 527.2 469.9 12 22.2 25.4
16" 406.4 577.9 520.7 12 22.2 25.4
18" 457.2 641.4 584.2 16 22.2 28.6
20" 508.0 704.9 647.4 16 22.2 31.8
24" 609.6 825.5 755.7 16 25.4 38.1
TABLE F
For Working Steam Pressure above 100 lbs and upto 150 lbs per sq. Inch

Nominal Pipe Size O. D. of pipe O. D. P. C. D. No. of bolt Dia of bolt Thickness
1/2" 21.3 95.3 66.7 4 12.7 9.5
3/4" 26.7 101.6 73.0 4 12.7 9.5
1" 33.4 120.7 87.3 4 15.9 9.5
1.1/4" 42.2 133.4 98.4 4 15.9 12.7
1.1/2" 48.3 139.7 104.8 4 15.9 12.7
2" 60.3 165.1 127.0 4 15.9 15.9
2.1/2" 73.0 184.2 146.1 8 15.9 15.9
3" 88.9 203.2 165.1 8 15.9 15.9
3.1/2" 101.6 215.9 177.8 8 15.9 19.1
4" 114.3 228.6 190.5 8 15.9 19.1
5" 141.3 279.4 235.0 8 19.1 22.2
6" 168.3 304.8 260.4 12 19.1 22.2
7" 190.5 336.6 292.1 12 19.1 22.2
8" 219.1 368.3 323.9 12 19.1 25.4
9" 244.5 406.4 355.6 12 22.2 25.4
10" 273.0 431.8 381.0 12 22.2 25.4
12" 323.9 489.0 438.2 16 22.2 28.6
14" 355.6 552.5 495.3 16 25.4 31.8
16" 406.4 609.6 552.5 20 25.4 31.8
18" 457.2 673.1 609.6 20 28.6 34.9
20" 508.0 736.6 673.1 24 28.6 38.1
24" 609.6 850.9 781.1 24 318 41.3
TABLE H
For Working Steam Pressure above 150 lbs and upto 250 lbs per sq. Inch

Nominal Pipe Size O. D. of pipe O. D. P. C. D. No. of bolt Dia of bolt Thickness
1/2" 21.3 114.3 82.6 4 15.9 12.7
3/4" 26.7 114.3 82.6 4 15.9 12.7
1" 33.4 120.7 87.3 4 15.9 14.3
1.1/4" 42.2 133.4 98.4 4 15.9 17.5
1.1/2" 48.3 139.7 104.8 4 15.9 17.5
2" 60.3 165.1 127.0 4 15.9 19.1
2.1/2" 73.0 184.2 146.1 8 15.9 19.1
3" 88.9 203.2 165.1 8 15.9 22.2
3.1/2" 101.6 215.9 177.8 8 15.9 22.2
4" 114.3 228.6 190.5 8 15.9 25.4
5" 141.3 279.4 235.0 8 19.1 28.6
6" 168.3 304.8 260.4 12 19.1 28.6
7" 190.5 336.6 292.1 12 19.1 31.8
8" 219.1 368.3 323.9 12 19.1 31.8
9" 244.5 406.4 355.6 12 22.2 34.9
10" 273.0 431.8 381.0 12 22.2 34.9
12" 323.9 489.0 438.2 16 22.2 38.1
14" 355.6 552.5 495.3 16 25.4 41.3
16" 406.4 609.6 552.5 20 25.4 44.5
18" 457.2 673.1 609.6 20 28.6 47.6
20" 508.0 736.6 673.1 24 28.6 50.8
24" 609.6 850.9 781.1 24 31.8 57.2
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