Metallic structures used in construction, namely, scaffoldings, prefabricated metal platforms, metallic guard barriers for pedestrian control, metal step ladders and ladders; metal troughs for mixing mortar; metal trestles for use as table supports; building materials made of metal, namely, metal brackets for use in the construction and assembly of decking, metal clamps, metal safety rails, soffits, fascia, construction elements made of metal, namely, supports, ceiling supports of metal; meta...