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ASTM A-36 Carbon Steel Back-up Flanges

ASTM A-36 Carbon Steel Back-up FlangesASTM A-36 Carbon Steel Back-up Flanges
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(size 21.5Kb)
Nominal
Pipe
Size
Outside
Diameter
(OD)
Inside
Diameter
(ID)
Thickness
(T)
Bolt
Circle
(BC)
Hole
Diameter
No. of
Bolt
Holes
45 Degree
Bevel
(B)
Approx.
Weight
(lbs)
Drilling Pattern - 150#
2 6.00 2.46 0.500 4.75 0.750 4 0.250 2.9
2 1/2 7.00 3.00 0.500 5.50 0.750 4 0.250 4.2
3 7.50 3.60 0.500 6.00 0.750 4 0.250 4.4
4 9.00 4.60 0.500 7.50 0.750 8 0.250 5.6
5 10.00 5.69 0.500 8.50 0.875 8 0.250 6.9
6 11.00 6.75 0.625 9.50 0.875 8 0.250 9.1
8 13.50 8.75 0.625 11.75 0.875 8 0.312 12.9
10 16.00 10.95 0.625 14.25 1.000 12 0.312 16.2
12 19.00 12.95 0.750 17.00 1.000 12 0.312 29.3
14 21.00 14.20 0.750 18.75 1.125 12 0.312 36.2
16 23.50 16.20 0.750 21.25 1.125 16 0.375 42.0
18 25.00 18.20 0.750 22.75 1.250 16 0.375 42.3
20 27.50 20.25 0.750 25.00 1.250 20 0.375 49.7
22 29.50 22.25 1.000 27.25 1.375 20 0.375 73.7
24 32.00 24.25 1.000 29.50 1.375 20 0.375 86.4
26 34.25 26.25 1.000 31.75 1.375 24 0.375 97.5
30 38.75 30.38 1.000 36.00 1.375 28 0.375 113.1
32 41.75 32.38 1.125 38.50 1.625 28 0.375 153.4
36 46.00 36.38 1.125 42.75 1.625 32 0.375 175.5

Larger sizes thru 144" pipe diameter available on request.

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