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ASME B16.1-2020

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.

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American Society of Mechanical Engineers [asme]

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