1)welded pipe 2)SIZE:21.3--1250mm 3)Thickness:1.8--60mm 4)API5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. CommodityERW steel pipe Specification21.3-457.2mm, 1.8-14.27mm 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 C D E),20G,12Cr1MoVG,12CrMo,T91,P91,T9,Cr5Mo(PS\STFA25),10CrMo910(P22),15CrMoG(P11 P12, ...