... 20G,A179,A106 B,A192,Gr320 4.MOQ:1 Ton Brand name :WanjiWebsite:www.wjpipe.comBusiness ... and exporterproduct NameBoiler seamless steel pipeSpecification Range20mm-820mm 1/2"- 32"Steel Grade20,20G,A 179,A106 ... A179ASTM A192,DIN 1629-1984,DIN 17175,BS3059.1-1987Application:structure steel pipe,boiler pipe,petroleum, ... Dependent honesty,Best service. ASTM A179 Carbon Boiler Seamless steel pipe(1/2''-32'')