... : sch5 to schxxsSurfaceGalvanized or coatedTechniqueCold drawn, hot rolled, hot expansionTypeRound pipe and square pipeMaterial20#, 45#,Q235,20G,A106B,A53B,AISI 1010, AISI ... :Hebei, a large high-pressure alloy pipe is a main export and manufacturer for stainless steel pipe in china, near to one of ...