... :21.3--1250mm 3)Thickness:1.8--60mm 4)API5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. CommodityERW ... .27mm MaterialQ195,Q215,Q345,20#,10#,16Mn.etc StandardAPI5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. 10#,20#,35#,#45,27SiMn,16Mn(Q345B ... ),WB36,12-42CrMo,20CrNIMo,25Cr2MoV,27SIMo,25-40CrMnMo,35Mo2VNb,34CrMo,20-40Cr,38CrMoAI,30-35CrMnSLA,09CrMo,09MnD,09CrMoAL,07Cr2ALMo,09CrCnSb,13CrMo44 ...