goods of common metal, namely metal rings, metal tubes, metal pipes, ducts of metal, metal elbows for pipes, metal feeding pieces, metal breech pipes, metal T-pieces for pipes, metal connection pieces for pipes, metal pipe junctions, metal pipe flanges, metal adaptor pieces, metal threaded pipes, metal clips for pipes, metal pipe muffs, metal nuts, metal shell coupling pieces, metal tie plates; manually operated metal valves; parts of the aforementioned goods of metal;reinforcing metal sleeve...