Aluminium and its alloys; Fittings of metal for windows; Furniture fittings of metal; Hardware, namely, white metal pins; Metal door frames; Prefabricated ready-to-assemble houses of metal; Reinforcing materials of metal for building purposes; Soundproof booths, transportable, of metal; Telephone boxes of metal; Valves of metal other than parts of machines including those from alloy steel and titanium