This Standard ASME/ANSI B16.11-2005- Forged Fittings, Socket-Welding and Threaded
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ASME-ANSI-B16.11-Forged-Fittings-Socket-Welding-and-Threaded.pdf
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https://www.asme.org/products/codes-standards/b1611-2011-forged-fittings-socketwelding-threaded