Historical
ANSI/ASME B16.42-1998
Ductile Iron Pipe Flanges and Flanged Fittings
Covers minimum requirements for Class 150 and 300 cast ductile iron pipe flanges and flanged fittings.
American Society of Mechanical Engineers [asme]
Covers minimum requirements for Class 150 and 300 cast ductile iron pipe flanges and flanged fittings.