ASME B16.1-2005 Gray Iron Pipe Flanges and Flanged Fittings (Classes 25, 125, and 250)

An American National Standard. The American Society of Mechanical Engineers (ASME). Revision of ASME B16.1-1998. Date of Issuance: August 31, 2006. 70p. This Standard covers Classes 25, 125, and 250 Gray Iron Pipe Flanges and Flanged Fittings. It includes:
(a) pressure-temperature ratings;
(b) sizes and method of designating openings of reducing fittings;
(c) marking;
(d) materials;
(e) dimensions and tolerances;
(f) bolting and gaskets;
(g) pressure testing.