... STEEL TUBE 2 1/4"-24' SCH 40-160 3API 5L API5CT 4 HOT finished Rotating heating furnace cooling bed UL ... ,sch80,sch100,sch140,sch160,XXSStandardGB, ANSI , JIS, DIN ,ASME ,API 5L, API5CT,etc.PackagingContainer or as per customers requirementApplications rangePetroleum, chemical ...