6 Steel sheets; steel pipes; metal jets, namely, metal tubes gradually tapering, used to speed up or direct the water flow in swimming pools; metal rings, namely, metal gaskets used to make joints water-tight in swimming pools; metal reinforcing materials for concrete, namely, metal lattices for reinforcing the concrete edges of swimming pools; metal reinforcing materials for pipes, namely, metal pipe couplings and joints used for joining metal pipes in swimming pools; metal collars for fastening pipes, stop collars of metal for pipes; swimming pools made of metal; buildings of prefabricated metal; metal flanges, metal tiles for building; metal tile floorings; metal water pipes; metal building materials, namely, metal fasteners intended for building swimming pools made of metal, comprised of bolts, nails, rivets, screws, metal pipes and fittings therefor; metal framework panels intended for building swimming pools made of metal; metal transportable buildings; metal elbows for pipes; copper sealing rings; unwrought or semi-wrought copper in rod form; metal stair steps; metal drain traps; metal drain pipes; metal ladders; metal branching pipes; metal staircases; unwrought or semi-wrought iron in sheet and rod form; metal grilles, namely metal gates and fencing; metal pipe muffs; prefabricated metal swimming pools; unwrought or semi-wrought lead in rod form; metal pipe junctions and washers of metal for water taps; bath, pool and plumbing fittings, namely, manually operated metal water pipe valves