Aluminum alloy; Balustrades of metal; Bins of metal; Bolts of metal; Boxes of common metal; Crampons for climbing; Door frames of metal; Doors and windows of metal; Fences of metal; Fittings of metal for furniture; Handrails of metal; Metal locks; Metal name plates; Metal nuts; Metal pipe fittings; Metal poles; Pegs of metal; Placards of metal; Safe deposit boxes; Staircases of metal