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B16.36-Welding Neck Orifice Flanges – Class 600

Welding Neck Orifice Flanges

Class 600

  Nominal size O C R X A Y TT No. of Holes   Diam. of holes Diam. of bolts Diam. of bolt circle
    O C R X A Y TT   R.F R.J.    
in. 1″ 4.88 1.5 2 2.12 1.32 3.25 01/04/07 4 0.69 0.75 5/8″ 3.5
mm.   124 38.1 50.8 53.8 33.5 82.6 6.4   17.5 19.1 15.9 88.9
in. 1 1/2″ 6.12 1.5 2.88 2.75 1.9 3.38 01/04/07 4 0.81 0.88 3/4″ 4.5
mm.   155.4 38.1 73.2 69.9 48.3 85.9 6.4   20.6 22.4 19.1 114.3
in. 2″ 6.5 1.5 3.62 3.31 2.38 3.38 01/04/07 8 0.69 0.75 5/8″ 5
mm.   165.1 38.1 91.9 84.1 60.5 85.9 6.4   17.5 19.1 15.9 127
in. 2 1/2″ 7.5 1.5 4.12 3.94 2.88 3.5 01/04/07 8 0.81 0.88 3/4″ 5.88
mm.   190.5 38.1 104.6 100.1 73.2 88.9 6.4   20.6 22.4 19.1 149.35
in. 3″ 8.25 1.5 5 4.62 3.5 3.5 03/08/07 8 0.81 0.88 3/4″ 6.62
mm.   209.6 38.1 127 117.3 88.9 88.9 9.5   20.6 22.4 19.1 168.15
in. 4″ 10.75 1.5 6.19 6 4.5 4 01/02/07 8 1 1 7/8″ 8.5
mm.   273.1 38.1 157.2 152.4 114.3 101.6 12.7   25.4 25.4 22.2 215.9
in. 6″ 14 1.88 8.5 8.75 6.63 4.62 01/02/07 12 1.12 1.12 1″ 11.5
mm.   355.6 47.8 215.9 222.3 168.4 117.3 12.7   28.4 28.4 25.4 292.1
in. 8″ 16.5 2.19 10.62 10.75 8.63 5.25 01/02/07 12 1.25 1.25 1 1/8″ 13.75
mm.   419.1 55.6 269.7 273.1 219.2 133.4 12.7   31.8 31.8 28.6 349.25
in. 10″ 20 2.5 12.75 13.5 10.75 6 01/02/07 16 1.38 1.38 1 1/4″ 17
mm.   508 63.5 323.9 342.9 273.1 152.4 12.7   35.1 35.1 31.8 431.8
in. 12″ 22 2.62 15 15.75 12.75 6.12 01/02/07 20 1.38 1.38 1 1/4″ 19.25
mm.   558.8 66.5 381 400.1 323.9 155.4 12.7   35.1 35.1 31.8 488.95
in. 14″ 23.75 2.75 16.25 17 14 6.5 01/02/07 20 1.5 1.5 1 3/8″ 20.75
mm.   603.3 69.9 412.8 431.8 355.6 165.1 12.7   38.1 38.1 35.1 527.05
in. 16″ 27 3 18.5 19.5 16 7 01/02/07 20 1.6 1.6 1.5″ 23.75
mm.   685.8 76.2 469.9 495.3 406.4 177.8 12.7   41.1 41.1 38.1 603.25
in. 18″ 29.25 3.25 21 21.5 18 7.25 01/02/07 20 1.75 1.75 1 5/8″ 25.75
mm.   743 82.6 533.4 546.1 457.2 184.2 12.7   44.5 44.5 41.3 654.05
in. 20″ 32 3.5 23 24 20 7.5 01/02/07 24 1.75 1.75 1 5/8″ 28.5
mm.   812.8 88.9 584.2 609.6 508 190.5 12.7   44.5 44.5 41.3 723.9
in. 24″ 37 4 27.25 28.25 24 8 01/02/07 24 2 2 1 7/8″ 33
mm.   939.8 101.6 692.2 717.6 609.6 203.2 12.7   50.8 50.8 47.6 838.2
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