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Flanges Dimensoins

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150 LB. FLANGES

Normal
pipe
size		 Outside
dia. of
flange		 Minimum
thickness
of flange		 Overall         Length Bolt 
Circle		 No. and
Size of
Holes		 O.D. of
raised
face
Welding
neck		 Slip-on
& socket
welding		 Lap Joint
O Q Y Diam. No. dia. R
1/2 89 11.2 47.6 15.9 15.9 60.5 4 15 35
3/4 117 15.9 57.2 25.4 25.4 82.5 4 15 43
1 108 14.3 55.6 17.5 17.5 79.5 4 15 51
1.1/4 117 15.9 57.2 20.6 20.6 89.0 4 15 64
1.1/2 127 17.5 61.9 22.2 22.2 98.5 4 15 73
2 152 19.1 63.5 25.4 25.4 120.5 4 19 92
2.1/2 178 22.3 69.8 28.6 28.6 139.5 4 19 105
3 190 23.9 69.8 30.2 30.2 152.5 4 19 127
3.1/2 216 23.9 71.4 31.8 31.8 178.0 8 19 140
4 229 23.9 86.2 33.3 33.3 190.5 8 19 157
5 254 23.9 88.9 36.5 36.5 216.0 8 22 186
6 279 25.4 88.9 39.7 39.7 241.5 8 22 216
8 343 28.6 101.6 44.4 44.4 298.5 8 22 270
10 406 30.2 101.6 49.2 49.2 362.0 12 25 324
12 483 31.8 114.3 55.6 55.6 432.0 12 25 381
14 533 35.0 127.0 57.2 79.4 476.0 12 29 413
16 597 36.6 127.0 63.5 87.3 539.5 16 29 470
18 635 39.7 139.7 68.3 96.8 578.0 16 32 533
20 698 42.9 144.5 73.0 103.2 635.0 20 32 584
24 813 47.7 152.4 82.6 111.1 749.5 20 35 692

300 LB. FLANGES

Normal
pipe
size		 Outside
dia. of
flange		 Minimum
thickness
of flange		 Overall         Length Bolt 
Circle		 No. and
Size of
Holes		 O.D. of
raised
face
Welding
neck		 Slip-on
& socket
welding		 Lap Joint
O Q Y Diam. No. dia. R
1/2 89 11.2 47.6 15.9 15.9 60.5 4 15 35
3/4 117 15.9 57.2 25.4 25.4 82.5 4 15 43
1 108 14.3 55.6 17.5 17.5 79.5 4 15 51
1.1/4 117 15.9 57.2 20.6 20.6 89.0 4 15 64
1.1/2 127 17.5 61.9 22.2 22.2 98.5 4 15 73
2 152 19.1 63.5 25.4 25.4 120.5 4 19 92
2.1/2 178 22.3 69.8 28.6 28.6 139.5 4 19 105
3 190 23.9 69.8 30.2 30.2 152.5 4 19 127
3.1/2 216 23.9 71.4 31.8 31.8 178.0 8 19 140
4 229 23.9 86.2 33.3 33.3 190.5 8 19 157
5 254 23.9 88.9 36.5 36.5 216.0 8 22 186
6 279 25.4 88.9 39.7 39.7 241.5 8 22 216
8 343 28.6 101.6 44.4 44.4 298.5 8 22 270
10 406 30.2 101.6 49.2 49.2 362.0 12 25 324
12 483 31.8 114.3 55.6 55.6 432.0 12 25 381
14 533 35.0 127.0 57.2 79.4 476.0 12 29 413
16 597 36.6 127.0 63.5 87.3 539.5 16 29 470
18 635 39.7 139.7 68.3 96.8 578.0 16 32 533
20 698 42.9 144.5 73.0 103.2 635.0 20 32 584
24 813 47.7 152.4 82.6 111.1 749.5 20 35 692

600 LB. FLANGES

Normal
pipe
size		 Outside
dia. of
flange		 Minimum
thickness of
flange		 Overall Length Bolt Circle No. and
Size of
Holes		 O.D. of
raised
face
Welding neck Slip-on 
& socket
welding		 Lap Joint
O Q Y Diam. No. dia. R
1/2 95 14.3 52.4 22.2 22.2 66.5 4 15 35
3/4 117 15.9 57.2 25.4 25.4 82.5 4 19 43
1 124 17.5 61.9 27.0 27.0 89.0 4 19 51
1-1/4 133 20.7 66.7 28.6 28.6 98.5 4 19 64
1-1/2 156 22.3 69.8 31.8 31.8 114.5 4 22 73
2 165 25.4 73.0 36.5 36.5 127.0 8 19 92
2-1/2 190 28.6 79.4 41.3 41.3 149.0 8 22 105
3 210 31.8 82.6 46.0 46.0 168.0 8 22 127
3-1/2 229 35.0 85.7 49.2 49.2 184.0 8 25 140
4 273 38.1 101.6 54.0 54.0 216.0 8 25 157
5 330 44.5 114.3 60.3 60.3 266.5 8 29 186
6 356 47.7 117.5 66.7 66.7 292.0 12 29 216
8 419 55.6 133.4 76.2 76.2 349.0 12 32 270
10 508 63.5 152.4 85.7 115.1 432.0 16 85 324
12 559 66.7 155.6 92.1 111.1 489.0 20 35 381
14 603 69.9 165.1 93.7 117.5 527.0 20 38 413
16 686 76.2 177.8 106.4 127.0 603.0 20 41 470
18 743 82.6 184.2 117.6 139.7 654.0 20 45 533
20 813 88.9 190.5 127.0 165.1 724.0 24 45 584
24 940 101.6 203.2 139.7 184.2 838.0 24 51 692

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