... , 316, 316L,317, 317L,321,409L, 904L, 410, 430,4Cr13. Steel pipematerialGB10#,20#,45#,20G.16Mn,27SiMn,15CrMoG,12Cr1MoU ... 3mm—20mmwidth120mm—2000mmProduction technologyHot rolled ,cold rolledSurface treatment2B,BA,8K,No.1,Etching,Hairline,Satin,Mirror,Vibration,Bead ... ,316,316L,316LN,317,317L,309,309S,310,310S,430,409specificationWall thickness0.3mm-20mmRound6.5mm-406mmSquare10*10mm-150*150mmrectangle10* ...