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ASME B16.4-2021

Gray Iron Threaded Fittings: Classes 125 and 250

This Standard for gray iron threaded fittings, Classes 125 and 250 covers: (a) pressure-temperature ratings; (b) size and method of designating openings of reducing fittings; (c) marking; (d) material; (e) dimensions and tolerances; (f) threadin;, and (g) coatings.

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American Society of Mechanical Engineers [asme]

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