6 Copper and copper alloys, profiles made of base metal, base metals and their alloys; construction materials made of metal, namely, roof covers, gutters, cover elements, namely cover plates and cover foils, support elements, namely, supporting beams and pillars, pipes, connecting elements, namely, screws, bolts and nails, portable structures made of metal, namely, containers for the storage and transportation of goods, scaffoldings; rail construction material made of metal, namely, rails and points for railway lines, supporting elements for rails; cables and wires made of metal not for electrical purposes; metal pipes