... schxxsSurfacePolished, annealed, pickledTechniqueCold drawn and cold rolled, hot rolledMaterialTP201,TP304,TP304L,TP316L,TP310S,TP321TypeSeamless and weldedEndPlain, ... : sch5 to schxxsSurfaceGalvanized or coatedTechniqueCold drawn, hot rolled, hot expansion, cold rolledTypeRound pipe and square pipeMaterial20 ... or as our discussion International quality hot-rolled carbon seamless steel pipe