The tubes widely used in auto components, petroleum exploitation, pipe line, hear-exchanger & boiler, chemical ... TubeBearing Steel TubeHydraulic Cylinder TubeSpecifications:A 53/A 53M Pipe, Steel, Black and Hot-Dipped, Zinc-Coated ... Equipment:Inspection EquipmentWarehouseApplication FieldsThe tubes widely used in auto components, petroleum exploitation, pipe line, hear-exchanger & boiler, chemical ...