METAL TUBES, METAL TUBE FITTINGS, METAL END CAPS FOR TUBES, METAL BENT TUBES, METAL JACKET TUBES, METAL ELBOWS, METAL TELESCOPIC TUBES, METAL COATED PIPES, ZINC TUBES, STEEL TUBES, IRON TUBES, METAL LAP LINKS, METAL COUPLERS FOR TUBES, METAL BENT TUBES, METAL SLEEVES, METAL VALVES FOR NON-MACHINE USE, VALVES, NAMELY, METAL VALVES FOR WATER PIPES AND METAL VALVES