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Flanges Dimensions





150# DIM & Weight


Dimensions for Class 150 Flanges
Pipe Size (inches) O Q R X No. of Holes Dia. of Bolt Holes Bolt Circle Dia YY H J Y B R YY BB Z
1/2 88.9 11.2 35.1 30.2 4 15.7 60.5 47.8 21.3 15.7 15.7 22.4 3.0 15.7 22.9 9.7
3/4 98.6 12.7 42.9 38.1 4 15.7 69.9 52.3 26.7 20.8 15.7 27.7 3.0 15.7 28.2 11.2
1 108.0 14.2 50.8 49.3 4 15.7 79.2 55.6 33.5 26.7 17.5 34.5 3.0 17.5 35.1 12.7
1 1/4 117.3 15.7 63.5 58.7 4 15.7 88.9 57.2 42.2 35.1 20.6 43.2 4.8 20.6 43.7 14.2
1 1/2 127.0 17.3 73.2 65.0 4 15.7 98.6 62.0 48.3 40.9 22.4 49.5 6.4 22.4 50.0 15.7
2 152.4 19.1 91.9 77.7 4 19.1 120.7 63.5 60.5 52.6 25.4 62.0 7.9 25.4 62.5 17.5
21/2 177.8 22.4 104.6 90.4 4 19.1 139.7 69.9 73.2 62.7 28.4 74.7 7.9 28.4 75.4 19.1
3 190.5 23.9 127.0 108.0 4 19.1 152.4 69.9 88.9 78.0 30.2 90.7 9.7 30.2 91.4 20.6
31/2 215.9 23.9 139.7 122.2 8 19.1 177.8 71.4 101.6 90.2 31.8 1033.8 9.7 31.8 104.1
4 228.6 23.9 157.2 134.9 8 19.1 190.5 76.2 114.3 102.4 33.3 116.1 11.2 33.3 116.8
5 254.0 23.9 185.7 163.6 8 22.4 215.9 88.9 141.2 128.3 36.6 143.8 11.2 36.6 144.5
6 279.4 25.4 215.9 192.0 8 22.4 241.3 88.9 168.4 154.2 39.6 170.7 12.7 39.6 171.5
8 342.9 28.4 269.7 246.1 8 22.4 298.5 101.6 219.2 202.7 44.5 221.5 12.7 44.5 222.3
10 406.4 30.2 323.9 304.8 12 25.4 362.0 101.6 273.1 254.5 49.3 276.4 12.7 49.3 277.4
12 482.6 31.8 381.0 365.3 12 25.4 431.8 114.3 323.9 304.8 55.6 327.2 12.7 55.6 328.2
14 533.4 35.1 412.8 400.1 12 28.4 476.3 127.0 355.6 To Be Specified by the Purchaser 57.2 359.2 12.7 79.2 360.2
16 596.9 36.6 469.9 457.2 16 28.4 539.8 127.0 406.4 63.5 410.5 12.7 87.4 411.2
18 635.0 39.6 533.4 505.0 16 31.8 577.9 139.7 457.2 68.3 461.8 12.7 96.8 462.3
20 698.5 42.9 584.2 558.8 20 31.8 635.0 144.5 508.0 73.2 513.1 12.7 103.1 514.4
24 812.8 47.8 692.2 663.4 20 35.1 749.3 152.4 609.6 82.6 616.0 12.7 111.3 616.0

300# DIM & Weight


Nom. Pipe Size (inches) O Q* R X No. of Holes Dia of Bolt Holes Bolt Circle Dia YY* H J Y* B R YV BB Z C T
1/2 95.3 14.2 35 38.1 4 15.7 66.5 52.3 21.3 15.7 22.4 22.4 3.0 22.4 22.9 9.7 23.6 15.7
3/4 117.3 15.7 43 47.8 4 19.1 82.6 57.2 26.7 20.8 25.4 27.7 3.0 25.4 28.2 11.2 29.0 15.7
1 124.0 17.5 51 53.8 4 19.1 88.9 62.0 33.5 26.7 26.9 34.5 3.0 26.9 35.1 12.7 35.8 17.5
1 1/4 133.4 19.1 64 63.5 4 19.1 98.6 65.0 42.2 35.1 26.9 43.2 4.8 26.9 43.7 14.2 44.5 20.6
1 1/2 155.4 20.6 73 69.9 4 22.4 114.3 68.3 48.3 40.9 30.2 49.5 6.4 30.2 50.0 15.7 50.5 22.4
2 165.1 22.4 92 84.1 8 19.1 127.0 69.9 60.5 52.6 33.3 62.0 7.9 33.3 62.5 17.5 63.5 28.4
21/2 190.5 25.4 105 100.1 8 22.4 149.4 76.2 73.2 62.7 38.1 74.7 7.9 38.1 75.4 19.1 76.2 31.8
3 209.6 28.4 127 117.3 8 22.4 168.1 79.2 88.9 78.0 42.9 90.7 9.7 42.9 91.4 20.6 92.2 31.8
31/2 228.6 30.2 140 133.4 8 22.4 184.2 81.0 101.6 90.2 44.5 103.4 9.7 44.5 104.1   104.9 36.6
4 254.0 31.8 157 146.1 8 22.4 200.2 85.9 114.3 102.4 47.8 116.1 11.2 47.8 116.8   117.6 36.6
5 279.4 35.1 186 177.8 8 22.4 235.0 98.6 141.2 128.3 50.8 143.8 11.2 50.8 144.5   144.5 42.9
6 317.5 36.6 216 206.2 12 22.4 269.7 98.6 168.4 154.2 52.3 170.7 12.7 52.3 171.5   171.5 46.0
8 381.0 41.1 270 260.4 12 25.4 330.2 111.3 219.2 202.7 62.0 221.5 12.7 62.0 222.3   222.3 50.8
10 444.5 47.8 324 320.5 16 28.4 387.4 117.3 273.1 254.5 66.5 276.4 12.7 95.3 277.4   276.4 55.6
12 520.7 50.8 381 374.7 16 31.8 450.9 130.0 323.9 304.8 73.2 327.2 12.7 101.6 328.2   328.7 60.5
14 584.2 53.8 413 425.5 20 31.8 514.4 142.7 355.6 To Be 76.2 359.2 12.7 111.3 360.2   360.4 63.5
16 647.7 57.2 470 482.6 20 35.1 571.5 146.1 406.4
To Specified by Purchaser
 82.6 410.5 12.7 120.7 411.2   411.2 68.3
18 711.2 60.5 533 533.4 24 35.1 628.7 158.8 457.2 88.9 461.8 12.7 130.0 462.3   462.0 69.9
20 774.7 63.5 584 587.2 24 35.1 685.8 162.1 508.0 95.3 513.1 12.7 139.7 514.4   512.8 73.2
24 914.4 69.9 692 701.5 24 41.1 812.8 168.1 609.6 106.4 616.0 12.7 152.4 616.0   614.4 82.6


600# DIM & Weight


Nom. Pipe Size (inches) O Q* R X No. OF HOLES Bolt Holes Bolt CIRCLE DiaDia. YY* H J Y* B r YV BB C T
1/2 95.3 14.2 35.1 38.1 4 15.7 66.5 52.3 21.3 TO BE SPECIFIED BY THE PURCHASER 22.4 22.4 3.0 22.4 22.9 23.6 15.7
3/4 117.3 15.7 42.9 47.8 4 19.1 82.6 57.2 26.7 25.4 27.7 3.0 25.4 28.2 29.0 15.7
1 124.0 17.5 50.8 53.8 4 19.1 88.9 62.0 33.5 26.9 34.5 3.0 26.9 35.1 35.8 17.5
1 1/4 133.4 20.6 63.5 63.5 4 19.1 98.6 66.5 42.2 28.4 43.2 4.8 28.4 43.7 44.5 20.6
1 1/2 155.4 22.4 73.2 69.9 4 22.4 114.3 69.9 48.3 31.8 49.5 6.4 31.8 50.0 50.5 22.4
2 165.1 25.4 91.9 84.1 8 19.1 127.0 73.2 60.5 36.6 62.0 7.9 36.6 62.5 63.5 28.4
21/2 190.5 28.4 104.6 100.1 8 22.4 149.4 79.2 73.2 41.1 74.7 7.9 41.1 75.4 76.2 31.8
3 209.6 31.8 127.0 117.3 8 22.4 168.1 82.6 88.9 46.0 90.7 9.7 46.0 91.4 92.2 35.1
31/2 228.6 35.1 139.7 133.4 8 25.4 184.2 85.9 101.6 49.3 103.4 9.7 49.3 104.1 104.9 39.6
4 254.0 35.1 157.2 146.1 8 25.4 200.2 88.9 114.3 50.8 116.1 11.2 50.8 116.8 117.6 36.6
5 279.4 38.1 185.7 177.8 8 25.4 235.0 101.6 141.2 53.8 143.8 11.2 53.8 144.5 144.5 42.9
6 317.5 41.1 215.9 206.2 12 25.4 269.7 103.1 168.4 57.2 170.7 12.7 57.2 171.5 171.5 46.0
8 381.0 47.8 269.7 260.4 12 28.4 330.2 117.3 219.2 68.3 221.5 12.7 68.3 222.3 222.3 50.8
10 444.5 53.8 323.9 320.5 16 31.8 387.4 124.0 273.1 73.2 276.4 12.7 101.6 277.4 276.4 55.6
12 520.7 57.2 381.0 374.7 16 35.1 450.9 136.7 323.9 79.2 327.2 12.7 108.0 328.2 328.7 60.5
14 584.2 60.5 412.8 425.5 20 35.1 514.4 149.4 355.6 84.1 359.2 12.7 117.3 360.2 360.4 63.5
16 647.7 63.5 469.9 482.6 20 38.1 571.5 152.4 406.4 93.7 410.5 12.7 127.0 411.2 411.2 68.3
18 711.2 66.5 533.4 533.4 24 38.1 628.7 165.1 457.2 98.6 461.8 12.7 136.7 462.3 462.0 69.9
20 774.7 69.9 584.2 587.2 24 41.1 685.8 168.1 508.0 101.6 513.1 12.7 146.1 514.4 512.8 73.2
24 914.4 76.2 692.2 701.5 24 47.8 812.8 174.8 609.6 114.3 616.0 12.7 158.8 616.0 614.4 82.6

Dimensions for Class 900 Flanges


Nom. Pipe Size (inches)
O
Q*
R
X
No. of Holes
Dia of Bolt Holes
Bolt Circle Dia
YY*
H
J
To Be
Specified
by the purchaser
Y*
B
r
YV
BB
Z
C
T
1/2 120.7 22.4 35.1 38.1 4 22.4 82.6 60.5 21.3
-
 31.8 22.4 3.0 31.8 22.9 23.6 22.4  
3/4 130.0 25.4 42.9 44.5 4 22.4 88.9 69.9 26.7 35.1 27.7 3.0 35.1 28.2 29.0 25.4  
1 149.4 28.4 50.8 52.3 4 25.4 101.6 73.2 33.5 41.1 34.5 3.0 41.1 35.1 35.8 28.4  
1 1/4 158.8 28.4 63.5 63.5 4 25.4 111.3 73.2 42.2 41.1 43.2 4.8 41.1 43.7 44.5 30.2  
1 1/2 177.8 31.8 73.2 69.9 4 28.4 124.0 82.6 48.3 44.5 49.5 6.4 44.5 50.0 50.5 31.8  
2 215.9 38.1 91.9 104.6 8 25.4 165.1 101.6 60.5 57.2 62.0 7.9 57.2 62.5 63.5 38.1  
21/2 244.3 41.1 104.6 124.0 8 28.4 190.5 104.6 73.2 63.5 74.7 7.9 63.5 75.4 76.2 47.8  
3 241.3 38.1 127.0 127.0 8 25.4 190.5 101.6 88.9 53.8 90.7 9.7 53.8 91.4 92.2 41.1  
4 292.1 44.5 157.2 158.8 8 31.8 235.0 114.3 114.3 69.9 116.1 11.2 69.9 116.8 117.6 47.8  
5 349.3 50.8 185.7 190.5 8 35.1 279.4 127.0 141.2 79.2 143.8 11.2 79.2 144.5 144.5 53.8  
6 381.0 55.6 215.9 235.0 12 31.8 317.5 139.7 168.4 85.9 170.7 12.7 85.9 171.5 171.5 57.2  
8 469.9 63.5 269.7 298.5 12 38.1 393.7 162.1 219.2 101.6 221.5 12.7 114.3 222.3 222.3 63.5  
10 546.1 69.9 323.9 368.3 16 38.1 469.9 184.2 273.1 108.0 276.4 12.7 127.0 277.4 276.4 71.4  
12 609.6 79.2 381.0 419.1 20 38.1 533.4 200.2 323.9 117.3 327.2 12.7 142.7 328.2 328.7 76.2  
14 641.4 85.9 412.8 450.9 20 41.1 558.8 212.9 355.6 130.0 359.2 12.7 155.4 360.2 360.4 82.6  
16 704.9 88.9 469.9 508.0 20 44.5 616.0 215.9 406.4 133.4 410.5 12.7 165.1 411.2 411.2 85.9  
18 787.4 101.6 533.4 565.2 20 50.8 685.8 228.6 457.2 152.4 461.8 12.7 190.5 462.3 462.0 88.9  
20 857.3 108.0 584.2 622.3 20 53.8 749.3 247.7 508.0 158.8 513.1 12.7 209.6 514.4 512.8 91.9  
24 1041.4 139.7 692.2 749.3 20 66.5 901.7 292.1 609.6 203.2 616.0 12.7 266.7 616.0 614.4 101.6  

Dimensions for Class 1500 Flanges


Dimensions for Class 1500 Flanges

Nom. Pipe Size(inches) O Q* R X No. of Holes Dia ofBoltHoles BoltCircleDia. YY* H J Y* B R YV BB Z C T
1/2 120.7 22.4 35.1 38.1 4 22.4 82.6 60.5 21.3 To Be Specified by purchaser 31.8 22.4 3.0 31.8 22.9 9.7 23.6 22.4
3/4 130.0 25.4 42.9 44.5 4 22.4 88.9 69.9 26.7 35.1 27.7 3.0 35.1 28.2 11.2 29.0 25.4
1 149.4 28.4 50.8 52.3 4 25.4 101.6 73.2 33.5 41.1 34.5 3.0 41.1 35.1 12.7 35.8 28.4
1 1/4 158.8 28.4 63.5 63.5 4 25.4 111.3 73.2 42.2 41.1 43.2 4.8 41.1 43.7 14.2 44.5 30.2
1 1/2 177.8 31.8 73.2 69.9 4 28.4 124.0 82.6 48.3 44.5 49.5 6.4 44.5 50.0 15.7 50.5 31.8
2 215.9 38.1 91.9 104.6 8 25.4 165.1 101.6 60.5 57.2 62.0 7.9 57.2 62.5 17.5 63.5 38.1
21/2 244.3 41.1 104.6 124.0 8 28.4 190.5 104.6 73.2 63.5 74.7 7.9 63.5 75.4 19.1 76.2 47.8
3 266.7 47.8 127.0 133.4 8 31.8 203.2 117.3 88.9 73.2   9.7 73.2 91.4   92.2 50.8
4 311.2 53.8 157.2 162.1 8 35.1 241.3 124.0 114.3 90.4 11.2 90.4 116.8 117.6 57.2
5 374.7 73.2 185.7 196.9 8 41.1 292.1 155.4 141.2 104.6 11.2 104.6 144.5 144.5 63.5
6 393.7 82.6 215.9 228.6 12 38.1 317.5 171.5 168.4 119.1 12.7 119.1 171.5 171.5 69.9
8 482.6 91.9 269.7 292.1 12 44.5 393.7 212.9 219.2 142.7 12.7 142.7 222.3 222.3 76.2
10 584.2 108.0 323.9 368.3 12 50.8 482.6 254.0 273.1 158.8 12.7 177.8 277.4 276.4 84.1
12 673.1 124.0 381.0 450.9 16 53.8 571.5 282.4 323.9 180.8 12.7 218.9 328.2 328.7 91.9
14 749.3 133.4 412.8 495.3 16 60.5 635.0 298.5 355.6   12.7 241.3 360.2    
16 825.5 146.1 469.9 552.5 16 66.5 704.9 311.2 406.4 12.7 260.4 411.2
18 914.4 162.1 533.4 596.9 16 73.2 774.7 304.8 457.2 12.7 276.4 462.3
20 984.3 177.8 584.2 641.4 16 79.2 831.9 355.6 508.0 12.7 292.1 514.4
24 1168.4 203.2 692.2 762.0 16 91.9 990.6 406.4 609.6 12.7 330.2 616.0


Dimensions for Class 2500 Flanges


Dimensions for Class 2500 Flanges

Nom. Pipe Size(inches)
O
Q*
R
X
No. of Holes
Dia of Bolt Holes
Bolt circle Dia
YY*
H
J
Y*
B
R
YV
BB
C
T
1/2 133.4 30.2 35.1 42.9 4 22.4 88.9 73.2 21.3 To Be Specified by purchaser 39.6 3.0 39.6 22.9 23.6 28.4 28.4
3/4 139.7 31.8 42.9 50.8 4 22.4 95.3 79.2 26.7 42.9 3.0 42.9 28.2 29.0 31.8  
1 158.8 35.1 50.8 57.2 4 25.4 108.0 88.9 33.5 47.8 3.0 47.8 35.1 35.8 35.1  
1 1/4 184.2 38.1 63.5 73.2 4 28.4 130.0 95.3 42.2 52.3 4.8 52.3 43.7 44.5 38.1  
1 1/2 203.2 44.5 73.2 79.2 4 31.8 146.1 111.3 48.3 60.5 6.4 60.5 50.0 50.5 44.5  
2 235.0 50.8 91.9 95.3 8 28.4 171.5 127.0 60.5 69.9 7.9 69.9 62.5 63.5 50.8  
21/2 266.7 57.2 104.6 114.3 8 31.8 196.9 142.7 73.2 79.2 7.9 79.2 75.4 76.2 57.2  
3 304.8 66.5 127.0 133.4 8 35.1 228.6 168.1 88.9 91.9 9.7 91.9 91.4 92.2 63.5  
4 355.6 76.2 157.2 165.1 8 41.1 273.1 190.5 114.3 108.0 11.2 108.0 116.8 117.6 69.9  
5 419.1 91.9 185.7 203.2 8 47.8 323.9 228.6 141.2 130.0 11.2 130.0 144.5 144.5 76.2  
6 482.6 108.0 215.9 235.0 8 53.8 368.3 273.1 168.4 152.4 12.7 152.4 171.5 171.5 82.6  
8 552.5 127.0 269.7 304.8 12 53.8 438.2 317.5 219.2 177.8 12.7 177.8 222.3 222.3 95.3  
10 673.1 165.1 323.9 374.7 12 66.5 539.8 419.1 273.1 228.6 12.7 228.6 277.4 276.4 108.0  
12 762.0 184.2 381.0 441.5 12 73.2 619.3 463.6 323.9 254.0 12.7 254.0 328.2 328.7 120.7