ASME B16.28
ASME B16.28标准涵盖ratings, overall dimensions, testing, tolerances, and markings for wrought carbon and alloy steel buttwelding short radius elbows and returns.
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Steel Pipe and Fitting Solutions
Steel Pipe and Fitting Solutions
ASME B16.9 Standard covers overall dimensions, tolerances,ratings, testing, and markings for factory-made wrought butt welding fittings in sizes NPS 1⁄2 through NPS 48 (DN 15 through DN 1200).