... 4)API5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. CommodityERW steel pipe Specification21.3-457.2mm, 1.8-14 ... #,10#,16Mn.etc StandardAPI5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. 10#,20#,35#,#45,27SiMn,16Mn(Q345B ... oeders as your request provide other steel pipe: cold rolled,hot rolled,hot dipped,ERW pipe,etc. We sincerely hope to establish long ...