Aluminum alloys; Buckles of common metal; Clothes hooks of metal; Door fittings of metal; Fittings of metal for windows; Insect screens of metal; Ladders of metal; Locks of metal, other than electric; Metal engine stands; Metal mooring buoys; Metal padlocks; Metal staircases; Mobile boarding stairs of metal for passengers; Portable metal free-standing barriers; Portable trade show display booth made primarily of metal; Reinforcing materials of metal for building; Rivets of metal; Shutters of ...