Common metals and their alloys; Metal building materials, namely, ceiling boards, floor boards, metal beams, metal curtain walls, building panels, frames of metal for building, porches of metal for building, soffits, metal reinforcement materials, porches of metal, awnings of metal, tiles of metal, fabricated metal components for building foundations, pillars of metal for buildings, prefabricated metal buildings, modular metallic buildings; materials of metal for railway tracks; non-electric ...