EASTERN TIGHT

metal duct systems for ventilating, air conditioning, heating and exhaust systems, namely, 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; and manual valves made of metal