... be changed as per customer's requirement BrandYHCompanyLiaocheng Yunhe Material CO.,LTDTypeManufactureGrade10#,20#,45#StandardASTM,A106,A53,A104andA5140DIN st42,st45,st37 ... 0.4-45mmtolerance Section shapeRoundApplicationStructure pipe,Oil pipe, gas pipe, boiler pipe, pressure pipe, fluid pipeColorblackTechniqueCold rolled ,Hot dipped, cold drawn ...