Standards 21: Cast Iron Flanges – ASME/ANSI Class 250
Cast Iron Flanges – ASME/ANSI Class 250 ASME/ANSI B16.1 – 1998 – Cast Iron Pipe Flanges and Flanged Fittings – Class 250 Flanges – outside and inside diameters, bolt circles, numbers and diameters of bolts
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Series: Piping Standards Series | Previous: Standards 20: Cast Iron Flanges – ASME/ANSI Class 25 | Next: Standards 22: Comparing American and British Piping Standards
