... A269. 3.Length6m--12mm OD:6mm-830mm. hot-rolled carbon seamless steel pipe.Description of product: ... to schxxsSurfacePolished, annealed, pickledTechniqueCold drawn and cold rolled, hot rolledMaterialTP201,TP304,TP304L,TP316L,TP310S,TP321TypeSeamless and ... sch5 to schxxsSurfaceGalvanized or coatedTechniqueCold drawn, hot rolled, hot expansion, cold rolledTypeRound pipe and square pipeMaterial20#, 45#, ...