Class 300 Steel Pipe Flanges

PipeSizeOCXAYYYTB1BB2rD
Outside
Diameter
of
Flange
Thickness
of Flange,
Minimum
Diameter
of Hub
Diameter
of
Weldneck
Threaded
Slip-On
Lap-JointWeld NeckThread
Length
Threaded
Flange,
Minimum
Slip-On,
Minimum
Lap-Joint,
Minimum
Weld neck / Socket
weld
Lap-Joint
Flange
Radius
Depth of Socket
1/23.750.561.500.840.880.882.060.620.880.900.620.120.91
3/44.620.621.881.051.001.002.250.621.091.110.820.121.14
14.880.692.121.321.061.062.440.691.361.381.050.121.41
1 1/45.250.752.501.661.061.062.560.811.701.721.380.191.75
1 1/26.120.812.751.901.191.192.690.881.951.971.610.251.99
26.500.883.312.381.311.312.751.122.442.462.070.312.50
2 1/27.501.003.942.881.501.503.001.252.942.972.470.313.00
38.251.124.623.501.691.693.121.253.573.603.070.383.63
3 1/29.001.195.254.001.751.753.191.444.074.103.550.384.13
410.001.255.754.501.881.883.381.444.574.604.030.444.63
511.001.387.005.562.002.003.881.695.665.695.050.445.69
612.501.448.126.632.062.063.881.816.726.756.070.506.75
815.001.6210.258.632.442.444.382.008.728.757.980.508.75
1017.501.8812.6210.752.623.754.622.1910.8810.9210.020.5010.88
1220.502.0014.7512.752.884.005.122.3812.8812.9212.000.5012.94
1423.002.1216.7514.003.004.385.622.5014.1414.1813.250.5014.19
1625.502.2519.0016.003.254.755.752.6916.1616.1915.250.5016.19
1828.002.3821.0018.003.505.126.252.7518.1818.2017.250.5018.19
2030.502.5023.1220.003.755.506.382.8820.2020.2519.250.5020.19
2436.002.7527.6224.004.196.006.623.2524.2524.2523.250.5024.19


Pipe SizeBOLTING PATTERN AND BOLT LENGTHS
Diameter of Bolt CircleDiameter of Bolt HolesNumber of BoltsDiameter of BoltsMachine Bolts
0.006 in
Raised Face
Stud Bolts
0.006 in
Raised Face
1/22.620.6240.502.252.75
3/43.250.7540.622.503.00
13.500.7540.622.753.25
1 1/43.880.7540.622.753.25
1 1/24.500.8840.753.003.75
25.000.7580.623.003.50
2 1/25.880.8880.753.504.00
36.620.8880.753.754.25
3 1/27.250.8880.753.754.50
47.880.8880.754.004.50
59.250.8880.754.254.75
610.620.88120.754.255.00
813.001.00120.884.755.50
1015.251.12161.005.506.25
1217.751.25161.126.006.75
1420.251.25201.126.257.00
1622.501.38201.256.507.50
1824.751.38241.256.757.75
2027.001.38241.257.258.25
2432.001.62241.508.009.25
3039.251.88281.75
3646.002.12322.00
4247.501.75321.62
4854.002.00321.88
  
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