Historical
ASME B16.1-2005
Cast Iron Pipe Flanges and Flanged Fittings, Class 25, 125, 250, and 800
Covers: (a) pressure-temperature ratings; (b) sizes and methods of designating openings of reducing fittings; (c) marking; (d) minimum requirements for materials; (e) dimensions and tolerances; (f) bolt, nut, and gasket dimensions; and (g) tests.
Content Provider
American Society of Mechanical Engineers [asme]