metal tubes, hoses, pipes and conduits, fitted with closures and sealers; metal parts and fittings of such tubes, hoses, pipes and conduits, namely couplings, elbows, T-pieces and reducers fitted with closers and sealers; closing, sealing and packing means made of metal intended for the above-mentioned goods, namely outer and inner pipesockets and girdle-type couplings; manual valves made of metal

Tubes, Tubing, Ducts and Ducting for Use in Air-Conditioning, Warm-Air Heating and Exhaust Systems, as Well as and Parts Thereof and Fittings Therefor