Historical
ASME B16.1-2015
Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250
This Standard for Classes 25, 125, and 250 Cast 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.
Content Provider
American Society of Mechanical Engineers [asme]