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Dimenisons of Class 300 Flanges

Dimenisons of Class 300 Flanges

Normal
pipe
size
Outside
dia. of
flange
Minimum
thickness
of flange
Overall LengthBolt 
Circle
No. and 
Size of
Holes
O.D. of
raised
face
Welding 
neck
Slip-on
& socket
welding
Lap Joint
OQYDiam.No.dia.R
1/29514.352.422.222.2666.541535
3/411715.957.225.425.482.441943
112417.561.927.027.089.041951
1-1/413319.165.127.027.098.541964
1-1/215620.768.330.230.2114.542273
216522.369.833.333.3127.081992
2-1/219025.476.238.138.1149.0822105
321028.679.442.942.9168.0822127
425431885.747.647.6200.0822157
527935.098.450.850.8235.0822186
631336.698.452.452.4270.01222216
6381413111.161.991.9330.01225270
1044447.7117.566.795.3387.51629324
1252150.8130.273.0101.6451.01632381
1458454.0142.976.2111.1514.52032413
1664857.2146.082.6120.7571.52035470
1871160.4158.888.9130.2628.52435533
2077563.5161.995.2139.7686.02435584
2491469.9168.3106.4152.4843.02441692

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