Grade B steel pipe SIZE:1/2-26inch (diameter) WT:1.8mm-30mm Standard:API5L,API5CT,ASTM A106,ASTM A53, TypeGrade B steel pipeSize1/2-26inch (diameter)Wall thickness1.8mm-30mmStandardAPI5L,API5CT,ASTM A106,ASTM A53,SY5037-2000,GB/T9711.1-1997MaterialX42,X52,X60,X70,Q235,Q345,10#,20#,45#,12CrMo,15CrMo,SS304,SS321PackagingPainting,Cap,Bevel(beveled edges),Bundles or as per customers ...