Carbon steel pipe 1.Material:10#~45#,A53,16Mn,20G,12CrMo.etc 2.Standard: ... Length:6m,5.8m,12m,3m,etc DescriptionHigh quality Carbon steel pipe,seamless steel pipe StandardGB5310-95,GB8087-1999,GB8162,GB8163- ... 1999,GB3087,GB6479-86,ASTM A106,A53,A210,DIN17175Material10#,20#,45 ... time rang from five days to twenty days high quality carbon steel pipe