... 4.Length:3-12m 5.Certification:ISO@APIASTM seamless steel pipe TypeASTM A53 standard seamless steel pipeBrand NameJinshengStandardASTM,DIN,GB, ... JIS,API 5L,API5 CTMaterialQ235,Q345,20#,10#,45#,St33,St37,St35.8,A53-A,A53-B, ... pipe4.oil or gas transportation pipe5.drill pipe6.petroleam chemical pipe and so onTechnologyHot rolled&Cold drawPackagingWrapped in bundles by steel ...