Butt-Welding fittings and butt-welding short radius elbows and returns purchased in accordance with this specification shall conform to the dimension and tolerances given in the latest revision of ASME B16.9 steel socket-welding and threaded fittings purchased in accordance with this specification shall conform to the sizes, shapes, dimensions, and tolerance specified in the latest revision of ASME B16.11 MSS SP79 or MSS SP83. Nipples, Plugs, and integrally reinforced forged branch outlet fittings purchased in accordance with this specification shall conform to the sizes, shapes, dimension and tolerance specified in the latest revision of MSS SP95 or MSS SP97.
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