| http://www.w3.org/ns/prov#value | - Fittings shall be manufactured according to thefollowing standards except for supplements mentioned in the relevant paragraphs:1.1 Wrought steel butt welding fittings as per ANSI/ASME B 16.9-1986 and MSS-SP-75 1988.1.2 Wrought and cast stainless steel butt welding fittings as per MSS-SP-43 1982.1.3 Wrought steel butt welding short radius elbows and returns as per ANSI/ASME B 16.28 1986.1.4 Carbon
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