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ANSI B16.9 standard is Factory-Made Wrought Steel Butt ...
thepipefitting.comANSI B16.9 standard is Factory-Made Wrought Steel Butt-welding Fittings. The B16.9 standard covers the information of general scope, pressure ratings, sizes, marking requirement, material, pipe fittings dimensions, butt welding ends preparation, design proof test, test and inspection for products, and the tolerance requirements.