... )Thickness:1.8--60mm 4)API5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. CommodityERW steel pipeSpecification21.3-457 ... ,Q215,Q345,20#,10#,16Mn.etcStandardAPI5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc.10#,20#,35#,#45,27SiMn ... ,hot rolled,hot dipped,ERW pipe,etc.We sincerely hope to establish long-term business relationship with you.