... 4)API5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. CommodityERW steel pipe Specification21.3 ... ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. 10#,20#,35#,#45,27SiMn,16Mn(Q345B C ... 3161 LengthAs per client requirement UsagePetrol,gas,water pipe,construction,chimney pot Processing techniqueThreading,coupling,necking, ... term30%T/T and 70%L/C or negotiationOr 100% L/C Delivery timeWithin 30 working days ...