Common metals and their alloys, namely iron and its alloys; transportable metal buildings; metal tubes and pipes; goods of common metal not included in other classes namely, manually operated metal tube valves not including machine parts, manually operated metal dust discharge control valves; manually operated metal pipe valves; reinforcing materials for metal pipes, namely, metal junctions for pipes, metal braces; metal tube and pipe couplings; metal storage containers for pulverulent materi...