6 COMMON METALS AND THEIR ALLOYS, IN PARTICULAR ZINC, TITANIUM ZINC, ZINC ALLOYS AND TITANIUM ZINC ALLOYS; METAL BUILDING MATERIALS, NAMELY, METAL SHEETING, ROOF COVERINGS, ROOF BORDERS, COPINGS, GUTTERS, WINDOW SILLS, FAÇADE WALL CLADDINGS, VENTILATION AND DRAINAGE DUCTS, PRE-FABRICATED METAL BUILDINGS, SOFFITS AND METAL BRACKETS; TRANSPORTABLE BUILDINGS OF METAL; MATERIALS OF METAL FOR RAILWAY TRACKS; NON-ELECTRIC CABLES AND WIRES OF COMMON METAL; IRONMONGERY, NAMELY, SMALL ITEMS OF METAL HARDWARE IN THE NATURE OF METAL BRACKETS, METAL CONNECTORS AND PINS FOR GENERAL USE; SEMI-FINISHED GOODS AND GOODS OF METAL AND THEIR ALLOYS, IN PARTICULAR OF ZINC, TITANIUM ZINC, ZINC ALLOYS AND TITANIUM ZINC ALLOYS, NAMELY, PIPES, GUTTERS, ROOF KERB WEATHERING, ROOFING ASSEMBLIES, ROOFING SHEETS, WALL COVERINGS, EAVES SHEETS, WINDOW SILLS AND FACADE CLADDINGS; SEMI-FINISHED GOODS AND GOODS OF METAL AND THEIR ALLOYS, IN PARTICULAR OF ZINC, TITANIUM ZINC, ZINC ALLOYS AND TITANIUM ZINC ALLOYS, NAMELY, CEILING COVERINGS, CLAMP-TYPE FASTENERS, WINDOW COVER FRAMES, FLOOR PANELS, METALLIC SHEETS, FLOOR BOARDS, DRYWALL CORNER BEAD, HINGES, GRIDS, AND RODS, THE FOREGOING BEING PROFILED AND NON-PROFILED, SURFACE TREATED AND NON-SURFACE TREATED