1.Carbon steel pipe 2.Standards:ASTM A53-B ASTM A106-B 3.OD:3/4'-12' 4.WT:4mm-70mm Seamless Steel Pipe O.DO.D toleraneW.TThickness Tolerance25--325MM±12.5%4—40MM±1%Length 2--12M , according to customers' requirementsMark As customers’ needInternational Standard ISO 9001;2000 APIStandardSeamless – ASTM A106, API 5L, ASTM A179, , ASTM A53, ASTM A192, ASTM A333 Welded – API 5L, ASTM A53,ASTM A671/ ...