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ASME B16.4-2011
- Gray Iron Threaded Fittings: Classes 125 and 250
- standard by ASME International, 09/15/2011
- Publisher: ASME
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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.