Rolled metal products for further manufacture; Air ducts of metal for buildings; Anchor bolts of metal; Anchor channels of metal; Articles made of common metal for use in building; Articles of common metal for use in building; Articles of metal for hanging purposes; Articles of metal for use as plumbing fittings; Articles of metal for use in sewage installations; Bolts of metal; Brackets of metal for building; Builders' hardware of common metals; Building products of metal; Cable and pipe clips of metal; Cable trays of metal (other than electric); Clamps of metal for pipes (other than parts of machines); Clips of metal for pipes; Ducts of metal for ventilating and air conditioning installations; Fittings of metal for pipes; Metal angles; Metal bolts (fasteners); Platforms of metal; Threaded bars of metal; Threaded nuts of metal; Threaded screws of metal; U-bolts of metal; Walkways of metal