Flanges

Flanges, Nominal Slip On Flange

150 LB. FLANGES

Normal Pipe Size Outside dia. Of flanges 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 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 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 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 12 25 324
12 483 31.8 114.3 55.6 55.6 432 12 25 381
14 533 35 127 57.2 79.4 476 12 29 413
16 597 36.6 127 63.5 87.3 539.5 16 29 470
18 635 39.7 139.7 68.3 96.8 578 16 32 533
20 698 42.9 144.5 73 103.2 635 20 32 584
24 813 47.7 152.4 82.6 111.1 749.5 20 35 692

300 LB. FLANGES

300 LB. FLANGES

Normal Pipe Size Outside dia. Of flanges 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 22.2 666.5 4 15 35
3/4 117 15.9 57.2 25.4 25.4 82.4 4 19 43
1 124 17.5 61.9 27 27 89 4 19 51
1-1/4 133 19.1 65.1 27 27 98.5 4 19 64
1-1/2 156 20.7 68.3 30.2 30.2 114.5 4 22 73
2 165 22.3 69.8 33.3 33.3 127 8 19 92
2-1/2 190 25.4 76.2 38.1 38.1 149 8 22 105
3 210 28.6 79.4 42.9 42.9 168 8 22 127
4 254 318 85.7 47.6 47.6 200 8 22 157
5 279 35 98.4 50.8 50.8 235 8 22 186
6 313 36.6 98.4 52.4 52.4 270 12 22 216
6 381 413 111.1 61.9 91.9 330 12 25 270
10 444 47.7 117.5 66.7 95.3 387.5 16 29 324
12 521 50.8 130.2 73 101.6 451 16 32 381
14 584 54 142.9 76.2 111.1 514.5 20 32 413
16 648 57.2 146 82.6 120.7 571.5 20 35 470
18 711 60.4 158.8 88.9 130.2 628.5 24 35 533
20 775 63.5 161.9 95.2 139.7 686 24 35 584
24 914 69.9 168.3 106.4 152.4 843 24 41 692

600 LB. FLANGES

600 LB. FLANGES

Normal Pipe Size Outside dia. Of flanges 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 27 89 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 36.5 36.5 127 8 19 92
2-1/2 190 28.6 79.4 41.3 41.3 149 8 22 105
3 210 31.8 82.6 46 46 168 8 22 127
3-1/2 229 35 85.7 49.2 49.2 184 8 25 140
4 273 38.1 101.6 54 54 216 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 12 29 216
8 419 55.6 133.4 76.2 76.2 349 12 32 270
10 508 63.5 152.4 85.7 115.1 432 16 85 324
12 559 66.7 155.6 92.1 111.1 489 20 35 381
14 603 69.9 165.1 93.7 117.5 527 20 38 413
16 686 76.2 177.8 106.4 127 603 20 41 470
18 743 82.6 184.2 117.6 139.7 654 20 45 533
20 813 88.9 190.5 127 165.1 724 24 45 584
24 940 101.6 203.2 139.7 184.2 838 24 51 692

900 LB. FLANGES

900 LB. FLANGES

Normal Pipe Size Outside dia. Of flanges 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
1/2 121 22.3 60.3 31.8 31.8 82.5 4 22 35
3/4 130 25.4 69.8 34.9 34.9 89 4 22 43
1 149 28.6 78 41.3 41.3 101.5 4 25 51
1-1/4 159 28.6 78 41.3 41.3 111 4 25 64
1-1/2 178 31.8 82.6 44.4 44.4 124 4 29 78
2 216 38.1 101.6 57.2 57.2 165 8 25 92
2-1/2 244 41.3 104.8 63.5 63.5 190.5 8 29 105
8 241 38.1 101.6 54 54 190.5 8 25 127
3-1/2                  
4 292 44.5 114.3 69.8 69.8 235 8 32 157
5 349 50.8 127 79.4 79.4 279.5 8 35 186
6 381 55.6 189.7 85.7 85.7 317.5 12 32 216
8 470 68.5 161.9 101.8 114.3 393.5 12 38 270
10 546 69.9 184.2 108 127 470 16 38 324
12 610 79.4 200 117.5 142.9 533.5 20 38 381
14 584 54 142.9 76.2 111.1 514.5 20 32 413
16 711 60.4 158.8 88.9 130.2 628.5 24 35 533
20 775 63.5 161.9 95.2 139.7 686 24 35 584
24 914 69.9 168.3 106.4 152.4 843 24 41 692

1500 LB. FLANGES

1500 LB. FLANGES

Normal Pipe Size Outside dia. Of flanges 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 12.1 22.3 60.3 31.8 31.8 82.5 4 22 35
3/4 130 25.4 69.8 34.9 34.9 89 4 22 43
1 149 28.6 73 41.3 41.3 101.5 4 25 51
1-1/4 159 28.6 73 41.3 41.3 111 4 25 64
1-1/2 178 31.8 82.6 44.4 44.4 124 4 29 73
2 216 38.1 101.6 57.2 57.2 165 8 25 92
2-1/2 244 41.3 104.8 63.5 63.5 190.5 8 29 105
3 267 47.7 117.5 73 73 203 8 32 127
3-1/2                  
4 311 54 123.8 90.5 90.5 241.5 8 35 157
5 375 73.1 155.5 104.8 104.8 292 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
10 584 108 254 158.8 177.8 482.5 12 51 324
12 673 123.9 282.9 181 219.1 571.5 16 54 381
14 749 133.4 298.4 ----- 241.3 635 16 60 413
16 826 146.1 311.2 ----- 260.4 705 16 51 470
18 914 162 327 ------ 276.2 474.5 16 73 538
20 984 117.8 355.4 ----- 292.1 832 16 80 584
24 1168 203.2 406.4 ----- 330.2 990.5 16 92 692

2500 LB. FLANGES

2500 LB. FLANGES

Normal Pipe Size Outside dia. Of flanges 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
1/2 133.4 30.2 73 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 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 4 32 73
2 235 50.8 127 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
3-1/2                  
4 355.6 76.2 190.5 108 108 273 8 41 157.2
5 419.1 92.1 228.6 130.2 130.2 323.9 8 48 185.7
6 482.6 108 273.1 152.4 152.4 268.3 8 54 215.9
8 552.5 127 317.5 177.8 177.8 438.2 12 54 269.9
10 673.1 165.1 419.1 228.6 228.6 539.8 12 67 323.9
12 762 184.2 463.6 254 254 619.1 12 73 381.03
14 --- --- --- --- --- --- -- --- ---
16 --- --- --- --- --- --- -- --- ---
18 --- --- --- --- --- --- -- --- --
20 --- --- --- --- --- --- -- --- --
24 --- --- --- --- --- --- -- --- --

Welding Neck Flanges Bores

Welding Neck Flanges 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 		 0.674
0.884
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		 ....
.....
.... 		 ....
.....
.... 		 ....
.....
.... 		 ....
.....
.... 		 ....
.....
.... 		 ....
.....
.... 

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