Common metals and their alloys; unwrought or semi-wrought brass; nickel; bronze; wires of common metal; pipes of metal; tubes of metal; metal bars for further manufacture; screw rings of metal; split rings of common metal; building materials, namely round bars and ring-shaped fittings composed primarily of metal, brass, bronze, nickel silver and low alloyed copper alloys; unwrought or semi-wrought copper; castings, foils, powders, as well as semi-finished rolled, drawn or extruded articles of...