... 3--1250mm 3)Thickness:1.8--60mm 4)API5L.ASTM-A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc ... 8-14.27mmMaterialQ195,Q215,Q345,20#,10#,16Mn.etcStandardAPI5L.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( ... techniqueThreading,coupling,necking,punching .etc.Payment term30%T/T and 70%L/C or negotiationOr 100% L/CDelivery ...