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Technical Info

Technical Info
Flanges Dimensions
Steel Tubes (India) Pvt. Ltd.

FORGED FLANGES 150# DIMENSION AS PER ANSI B 16.5

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