... as require 4.Grade:10#-45#,Q195-Q345 5.Standard: BS,GB,ASTM welded steel pipe Production Round welded tube Specification ... .0-2.0601.2-2.0701.0-2.5Standard BS1387,BS EN 10217,GB/T8162,GB/8163,ASTM A106-2006 Grade10 ... with you. Cold rolled round seamless steel tube&pipe in 100 diameter