[ Aluminum alloys; Angle irons of metal; Buckles of common metal; Casement windows of metal; Ducts of metal for ventilating and air-conditioning installations; Elbows of metal for pipes; ] Furniture fittings of metal; [ Junctions of metal for flexible pipes; Metal chains; ] Metal hooks [; Metal pipe muffs; Metal ropes; Numberplates of metal; Scaffolding towers of metal; Screws of metal; Silver-plated tin alloys; Spring locks of metal, other than electric; Steel alloys ]