1.hot-rolled carbon seamless steel pipe. 2.Standard: ASTMA511, A312, A269. 3.Length6m--12mm ... OD:6mm-830mm. hot-rolled carbon seamless steel pipe.Description of product:1. (1) Stainless steel seamless ... hot rolled, hot expansion, cold rolledTypeRound pipe and square pipeMaterial20#, 45#,Q235,20G,A106B,A53B,AISI 1010, AISI 1020, AISI ... International quality hot-rolled carbon seamless steel pipe