Common metals and their alloys, unwrought or semi-wrought; Reinforcing materials of metal for building purposes; Building boards of metal; Cladding of metal for building; Frames of metal for building; Framework of metal for building; Linings of metal for building; Pillars of metal for building; Reinforcing materials of metal for building; Metal building materials, namely, scaffolding, hinges, trellises, windows, doors; Metal pipes; Hardware, namely, metal pins; Common metals and their alloys ...