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    J01720 - Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250 has been added to your cart.
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    Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250

    B16.1 - 2020

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    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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