Standards 12: Carbon and Stainless Steel Flanges – ASME/ANSI Class 300

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Carbon and Stainless Steel Flanges – ASME/ANSI Class 300 ASME/ANSI B16.5-1996 Pipe Flanges and Flanged Fittings – Class 300 Flanges – outside and inside diameters, bolt circles, numbers and diameters of bolts  for Weld neck, Threaded, Slip-on, Lap joint, Socket weld and Blind flanges.

Carbon and stainless steel qualities according ASME B16.5 Table 1A.

1) Recommended bolts are 1/8 smaller than the nominal bolt hole diameters shown.