Dimensions

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Flanges Dimensional Charts( click on individual sizes for respective dimensions )


150 LB. FLANGES

Normal pipe size Outside dia. of flange Inside dia. of flange Thickness without HUB Overall Length Hub OD Bolt Circle Dia (PCD) No. and Size of Holes O.D. of raised face
Welding neck Slip On with HUB Lap Joint with HUB
O B Q YY X K No. of holes Hole dia. R
1/2 89 22.2 11.2 47.6 15.9 15.9 30 60.5 4 15 35
3/4 98.5 27.7 15.9 57.2 25.4 25.4 38 82.5 4 15 43
1 108 34.5 14.3 55.6 17.5 17.5 49 79.5 4 15 51
1.1/4 117 43.2 15.9 57.2 20.6 20.6 59 89 4 15 64
1.1/2 127 49.5 17.5 61.9 22.2 22.2 65 98.5 4 15 73
2 152 61.9 19.1 63.5 25.4 25.4 78 120.5 4 19 92
2.1/2 178 74.6 22.3 69.8 28.6 28.6 90 139.5 4 19 105
3 190 90.7 23.9 69.8 30.2 30.2 108 152.5 4 19 127
3.1/2 216 103.4 23.9 71.4 31.8 31.8 122 178.0 8 19 140
4 229 116.1 23.9 86.2 33.3 33.3 135 190.5 8 19 157
5 254 143.8 23.9 88.9 36.5 36.5 164 216.0 8 22 186
6 279 170.7 25.4 88.9 39.7 39.7 192 241.5 8 22 216
8 343 221.5 28.6 101.6 44.4 44.4 246 298.5 8 22 270
10 406 276.2 30.2 101.6 49.2 49.2 305 362.0 12 25 324
12 483 327 31.8 114.3 55.6 55.6 365 432.0 12 25 381
14 533 359.2 35.0 127.0 57.2 79.4 400 476.0 12 29 413
16 597 410 36.6 127.0 63.5 87.3 457 539.5 16 29 470
18 635 461.8 39.7 139.7 68.3 96.8 505 578.0 16 32 533
20 698 513.1 42.9 144.5 73.0 103.2 559 635.0 20 32 584
24 813 616 47.7 152.4 82.6 111.1 663 749.5 20 35 692
300 LB. FLANGES

Normal pipe size Outside dia. of flange Inside dia. of flange Thickness without HUB Overall Length Hub OD Bolt Circle Dia (PCD) No. and Size of Holes O.D. of raised face
Welding neck Slip On with HUB Lap Joint with HUB
O B Q YY X K No. of holes Hole dia. R
1/2 95 22.2 14.3 52.4 22.2 22.2 38 666.5 4 15 35
3/4 117 27.7 15.9 57.2 25.4 25.4 48 82.4 4 19 43
1 124 34.5 17.5 61.9 27.0 27.0 54 89.0 4 19 51
1-1/4 133 43.2 19.1 65.1 27.0 27.0 64 98.5 4 19 64
1-1/2 156 49.5 20.7 68.3 30.2 30.2 70 114.5 4 22 73
2 165 61.9 22.3 69.8 33.3 33.3 84 127.0 8 19 92
2-1/2 190 74.6 25.4 76.2 38.1 38.1 100 149.0 8 22 105
3 210 90.7 28.6 79.4 42.9 42.9 117 168.0 8 22 127
4 254 116.8 318 85.7 47.6 47.6 146 200.0 8 22 157
5 279 144.4 35.0 98.4 50.8 50.8 178 235.0 8 22 186
6 313 171.4 36.6 98.4 52.4 52.4 206 270.0 12 22 216
8 381 222.2 413 111.1 61.9 91.9 260 330.0 12 25 270
10 444 277.4 47.7 117.5 66.7 95.3 321 387.5 16 29 324
12 521 328.2 50.8 130.2 73.0 101.6 375 451.0 16 32 381
14 584 360.2 54.0 142.9 76.2 111.1 425 514.5 20 32 413
16 648 411.2 57.2 146.0 82.6 120.7 483 571.5 20 35 470
18 711 462.3 60.4 158.8 88.9 130.2 533 628.5 24 35 533
20 775 514.4 63.5 161.9 95.2 139.7 587 686.0 24 35 584
24 914 616 69.9 168.3 106.4 152.4 702 843.0 24 41 692
600 LB. FLANGES

Normal pipe size Outside dia. of flange Inside dia. of flange Thickness without HUB Overall Length Hub OD Bolt Circle Dia (PCD) No. and Size of Holes O.D. of raised face
Welding neck Slip On with HUB Lap Joint with HUB
O B Q YY X K No. of holes Hole dia. R
1/2 95 22.2 14.3 52.4 22.2 22.2 38 66.5 4 15 35
3/4 117 27.7 15.9 57.2 25.4 25.4 48 82.5 4 19 43
1 124 34.5 17.5 61.9 27.0 27.0 54 89.0 4 19 51
1-1/4 133 43.2 20.7 66.7 28.6 28.6 64 98.5 4 19 64
1-1/2 156 49.5 22.3 69.8 31.8 31.8 70 114.5 4 22 73
2 165 61.9 25.4 73.0 36.5 36.5 84 127.0 8 19 92
2-1/2 190 74.6 28.6 79.4 41.3 41.3 100 149.0 8 22 105
3 210 90.7 31.8 82.6 46.0 46.0 117 168.0 8 22 127
4 273 116.1 38.1 101.6 54.0 54.0 152 216.0 8 25 157
5 330 143.8 44.5 114.3 60.3 60.3 189 266.5 8 29 186
6 356 170.7 47.7 117.5 66.7 66.7 222 292.0 12 29 216
8 419 221.5 55.6 133.4 76.2 76.2 273 349.0 12 32 270
10 508 276.2 63.5 152.4 85.7 115.1 343 432.0 16 85 324
12 559 327 66.7 155.6 92.1 111.1 400 489.0 20 35 381
14 603 359.2 69.9 165.1 93.7 117.5 432 527.0 20 38 413
16 686 410.5 76.2 177.8 106.4 127.0 495 603.0 20 41 470
18 743 461.8 82.6 184.2 117.6 139.7 546 654.0 20 45 533
20 813 513.1 88.9 190.5 127.0 165.1 610 724.0 24 45 584
24 940 616 101.6 203.2 139.7 184.2 718 838.0 24 51 692
900 LB. FLANGES

Normal pipe size Outside dia. of flange Inside dia. of flange Thickness without HUB Overall Length Hub OD Bolt Circle Dia (PCD) No. and Size of Holes O.D. of raised face
Welding neck Slip On with HUB Lap Joint with HUB
O B Q YY X K No. of holes Hole dia. R
1/2 95 22.2 14.3 52.4 22.2 22.2 38 66.5 4 15 35
3/4 117 27.7 15.9 57.2 25.4 25.4 44 82.5 4 19 43
1 124 34.5 17.5 61.9 27.0 27.0 52 89.0 4 19 51
1-1/4 133 43.2 20.7 66.7 28.6 28.6 64 98.5 4 19 64
1-1/2 156 49.5 22.3 69.8 31.8 31.8 70 114.5 4 22 73
2 165 61.9 25.4 73.0 36.5 36.5 105 127.0 8 19 92
2-1/2 190 74.6 28.6 79.4 41.3 41.3 124 149.0 8 22 105
3 210 90.7 31.8 82.6 46.0 46.0 127 168.0 8 22 127
4 273 116.1 38.1 101.6 54.0 54.0 159 216.0 8 25 157
5 330 143.8 44.5 114.3 60.3 60.3 190 266.5 8 29 186
6 356 170.7 47.7 117.5 66.7 66.7 235 292.0 12 29 216
8 419 221.5 55.6 133.4 76.2 76.2 298 349.0 12 32 270
10 508 276.2 63.5 152.4 85.7 115.1 368 432.0 16 85 324
12 559 327 66.7 155.6 92.1 111.1 419 489.0 20 35 381
14 603 359.2 69.9 165.1 93.7 117.5 451 527.0 20 38 413
16 686 410.5 76.2 177.8 106.4 127.0 508 603.0 20 41 470
18 743 461.8 82.6 184.2 117.6 139.7 565 654.0 20 45 533
20 813 513.1 88.9 190.5 127.0 165.1 622 724.0 24 45 584
24 940 616 101.6 203.2 139.7 184.2 749 838.0 24 51 692
1500 LB. FLANGES

Normal pipe size Outside dia. of flange Inside dia. of flange Thickness without HUB Overall Length Hub OD Bolt Circle Dia (PCD) No. and Size of Holes O.D. of raised face
Welding neck Slip On with HUB Lap Joint with HUB
O B Q YY X K No. of holes Hole dia. R
1/2 12.1 22.2 22.3 60.3 31.8 31.8 38 82.5 4 22 35
3/4 130 27.7 25.4 69.8 34.9 34.9 44 89.0 4 22 43
1 149 34.5 28.6 73.0 41.3 41.3 52 101.5 4 25 51
1-1/4 159 43.2 28.6 73.0 41.3 41.3 64 111.0 4 25 64
1-1/2 178 49.5 31.8 82.6 44.4 44.4 70 124.0 4 29 73
2 216 61.9 38.1 101.6 57.2 57.2 105 165.0 8 25 92
2-1/2 244 74.6 41.3 104.8 63.5 63.5 124 190.5 8 29 105
3 267 47.7 117.5 73.0 73.0 203.0 8 32 127
3-1/2
4 311 54.0 123.8 90.5 90.5 241.5 8 35 157
5 375 73.1 155.5 104.8 104.8 292.0 8 41 186
6 394 82.6 171.4 119.1 119.1 317.5 12 38 216
8 483 92.1 212.7 142.9 142.9 393.5 12 45 270
10 584 108.0 254.0 158.8 177.8 482.5 12 51 324
12 673 123.9 282.9 181.0 219.1 571.5 16 54 381
14 749 133.4 298.4 ----- 241.3 635.0 16 60 413
16 826 146.1 311.2 ----- 260.4 705.0 16 51 470
18 914 162.0 327.0 ------ 276.2 474.5 16 73 538
20 984 117.8 355.4 ----- 292.1 832.0 16 80 584
24 1168 203.2 406.4 ----- 330.2 990.5 16 92 692
2500 LB. FLANGES

Normal pipe size Outside dia. of flange Inside dia. of flange Thickness without HUB Overall Length Hub OD Bolt Circle Dia (PCD) No. and Size of Holes O.D. of raised face
Welding neck Slip On with HUB Lap Joint with HUB
O B Q YY X K No. of holes Hole dia. R
1/2 133.4 30.2 73.0 39.7 39.7 88.9 4 22 34.9
3/4 139.7 31.8 79.4 42.9 42.9 95.3 4 22 42.9
1 158.8 34.9 88.9 47.6 47.6 108.0 4 25 50.8
1-1/4 184.2 38.1 95.3 52.4 52.4 130.2 4 29 63.5
1-1/2 203.2 44.5 111.1 60.3 60.3 146.0 4 32 73.0
2 235.0 50.8 127.0 69.9 69.9 171.5 8 29 92.1
2-1/2 266.7 57.2 142.9 79.4 79.4 196.9 8 32 104.8
3 304.8 66.7 168.3 92.1 92.1 228.6 8 35 127.0
3-1/2
4 355.6 76.2 190.5 108.0 108.0 273.0 8 41 157.2
5 419.1 92.1 228.6 130.2 130.2 323.9 8 48 185.7
6 482.6 108.0 273.1 152.4 152.4 268.3 8 54 215.9
8 552.5 127.0 317.5 177.8 177.8 438.2 12 54 269.9
10 673.1 165.1 419.1 228.6 228.6 539.8 12 67 323.9
12 762.0 184.2 463.6 254.0 254.0 619.1 12 73 381.03
14 --- --- --- --- --- --- -- --- ---
16 --- --- --- --- --- --- -- --- ---
18 --- --- --- --- --- --- -- --- --
20 --- --- --- --- --- --- -- --- --
24 --- --- --- --- --- --- -- --- --
WELDING NECK FLANGE BORES

Nom.
pipe
Size 		Outside
Diam 		Light
Wall
6 		Sched.
20 		Sched.
30 		Std.
Wall 		Sched.
40 		Sched.
60 		Extra
Strong 		Sched.
80 		Sched.
100 		Sched.
120 		Sched.
140 		Sched.
160 		Double
Extra
Strong
1/2
3/4
1 		0.840
1.050
1.315 		.674
.884
1.097 		.....
.....
.... 		.....
.....
.... 		0.622
0.824
1.049 		0.622
0.824
1.049 		.....
.....
.... 		0.546
0.742
0.957 		0.546
0.742
0.957 		.....
.....
.... 		.....
.....
.... 		.....
.....
.... 		0.464
0.612
0.815 		0.252
0.434
0.599
1-1/4
1-1/2
2 		1.660
1.900
2.375 		1.442
1.682
2.157 		.....
.....
.... 		.....
.....
.... 		1.380
1.610
2.067 		1.380
1.610
2.067 		.....
.....
.... 		1.278
1.500
1.939 		1.278
1.500
1.939 		.....
.....
.... 		.....
.....
.... 		.....
.....
.... 		1.160
1.338
1.687 		0.896
1.100
1.503
2-1/2
3
3-1/2 		2.875
3.500
4.000 		2.635
3.260
3.760 		.....
.....
.... 		.....
.....
.... 		2.469
3.068
3.548 		2.469
3.068
3.548 		.....
.....
.... 		2.323
2.900
3.364 		2.323
2.900
3.364 		.....
.....
.... 		....
....
.... 		.....
.....
.... 		2.125
2.624
.... 		1.771
2.300
2.728
4
5
6
8 		4.500
5.563
6.625
8.625 		4.260
5.295
6.357
8.329 		...
...
...
8.125 		...
...
...
8.071 		4.026
5.047
6.065
7.981 		4.026
5.047
6.065
7.981 		...
....
...
7.813 		3.826
4.813
5.761
7.625 		3.826
4.813
5.761
7.625 		...
...
...
7.437 		3.624
4.563
5.501
7.187 		...
...
...
7.001 		3.438
4.313
5.187
6.813 		3.152
4.063
4.897
6.875
10
12
14
16 		10.750
12.750
14.000
16.000 		10.420
12.390
13.500
15.500 		10.250
12.250
13.376
15.376 		10.136
12.090
13.250
15.250 		10.020
12.000
13.250
15.250 		10.020
11.938
13.124
15.000 		9.750
11.626
12.812
14.688 		9.750
11.750
13.000
15.000 		9.562
11.374
12.500
14.312 		9.312
11.062
12.124
13.938 		0.062
10.750
11.814
13.564 		8.750
10.500
11.500
13.124 		8.500
10.500
11.500
13.124 		8.750
10.750
....
....
18
20
24 		18.000
20.000
24.000 		17.500
19.500
23.500 		17.376
19.250
23.250 		17.124
19.000
22.876 		17.250
19.250
23.250 		16.876
18.812
22.624 		16.500
18.376
22.062 		17.000
19.000
23.000 		16.124
17.938
21.562 		15.688
17.438
20.938 		15.250
17.000
20.376 		14.876
16.500
19.876 		14.438
16.062
19.312 		....
....
....
30
36
42 		30.000
36.000
42.000 		29.376
35.376
...... 		29.000
35.000 		28.750
34.750 		29.250
35.250
41.250 		....
34.500
.... 		....
.....
.... 		29.000
35.000
41.000 		....
.....
.... 		....
.....
.... 		....
.....
.... 		....
.....
.... 		....
.....
.... 		....
.....
....
Table D Flanges

For Working Steam Pressure upto 50 Ibs per sq. inch


Nominal Pipe size OD of Pipe Dia of Flange Dia of Bolt Circle 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 87.6 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
10 273 406.4 355.6 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 Flanges

For Working Steam Pressure 50 Ibs upto 100 Ibs per sq. inch


Nominal Pipe size Dia of Flange Dia of Bolt Circle No. of Bolt Dia of Bolt Thickness
1/2 95.3 66.7 4 12.7 6.4
3/4 101.6 73.0 4 12.7 6.4
1 114.3 82.6 4 12.7 7.1
1.1/4 120.7 87.6 4 12.7 7.1
1.1/2 133.4 98.4 4 12.7 8.7
2 152.4 114.3 4 15.9 9.5
2.1/2 165.1 127.0 4 15.9 10.3
3 184.2 146.1 4 15.9 11.1
3.1/2 203.2 165.1 8 15.9 11.9
4 215.9 177.8 8 15.9 12.7
5 254.0 209.6 8 15.9 14.3
6 279.4 228.6 8 19.1 17.5
7 304.8 260.4 8 19.1 19.1
8 336.6 292.1 8 19.1 19.1
9 368.3 323.9 12 19.1 20.6
10 406.4 355.6 12 19.1 22.2
12 457.2 406.4 12 22.2 25.4
14 527.1 469.9 12 22.2 25.4
16 577.9 520.7 12 22.2 25.4
18 641.4 584.2 12 22.2 28.6
20 704.9 647.4 16 22.2 31.8
24 825.5 755.7 16 25.4 38.1
Table F Flanges

For Working Steam Pressure above 100 Ibs and upto 150 Ibs per sq. inch


Nominal Pipe size OD of Pipe Dia of Flange Dia of Bolt Circle 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/td> 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
10 273 431.8 381.0 12 22.2 25.4
12 323.0 489.0 438.2 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 31.8 41.3
Table H Flanges

For Working Steam Pressure above 150 Ibs and upto 250 Ibs per sq. inch


Nominal Pipe size Dia of Flange Dia of Bolt Circle No. of Bolt Dia of Bolt Thickness
1/2 114.3 82.6 4 15.9 12.7
3/4 114.3 82.6 4 15.9 12.7
1 120.78 87.3 4 15.9 14.3
1.1/4 133.4 98.4 4 15.9 17.5
1.1/2 139.7 104.8 4 15.9 17.5
2 165.1 127.0 4 15.9 19.1
2.1/2 184.2 146.1 8 15.9 19.1
3 203.2 165.1 8 15.9 22.2
3.1/2 215.9 177.8 8 15.9 22.2
4 228.6 190.5 8 15.9 25.4
5 279.4 235.0 8 19.1 28.6
6 304.8 260.4 12 19.1 28.6
7 336.6 292.1 12 19.1 31.8
8 368.3 323.9 12 19.1 31.8
9 406.4 355.6 12 22.2 34.9
10 431.8 381.0 12 22.2 34.9
12 489.0 438.2 16 22.2 38.1
14 552.5 495.3 16 25.4 41.3
16 609.6 552.5 20 25.4 44.5
18 673.1 609.6 20 28.6 47.6
20 736.6 673.1 24 28.6 50.8
24 850.9 781.1 24 31.8 57.2