Aluminum alloy; jalousies of metal; outdoor blinds of metal; shutters of metal; gates of metal; windows of metal; insect screens of metal; refractory construction materials of metal; buckles of common metal; latch bars of metal; window stops of metal; door stops of metal; metal chains; couplings of metal for chains; sash pulleys of metal; window pulleys of metal; plugs of metal; window fasteners of metal; fittings of metal for windows; door handles of metal; door handles of metal; door bolts of metal; knobs of metal; collars of metal for fastening pipes; foot-operated door openers of metal; hinges of metal; runners of metal for sliding doors; fittings of metal for furniture; metal rails