Braces of metal for handling loads; Bracings of metal; Building components of metal; Building elements made of common metal alloys; Building elements made of common metals; Building elements of metal; Building extensions (structures) of metal; Building fittings of metal; Building frameworks of metal; Building materials made principally of common metal; Building materials made principally of common metal alloys; Building materials made wholly of common metal; Building materials made wholly of common metal alloys; Building materials of metal; Building panels of metal; Building parts of metal; Building products of metal; Building structures of metal; Buildings of metal; Buildings, transportable, of metal