... /SMLS 2.Standard: ASTMA511, A312, A269. 3.API&ISO9001 certificate. CS/SS/AS seamless steel pipe/SMLS Description of product:1 ... , hot rolled, hot expansion, cold rolledTypeRound pipe and square pipeMaterial20#, 45#,Q235,20G,A106B,A53B,AISI 1010, AISI 1020, AISI 1045EndPlain ... payment: T/T or L/C or as our discussion CS/SS/AS seamless steel pipe/SMLS