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    J0222Q - Gray Iron Threaded Fittings: Classes 125 and 250 has been added to your cart.
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    Standards

    Gray Iron Threaded Fittings: Classes 125 and 250

    B16.4 - 2021

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    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) threading,

    and (g) coatings.

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