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Corrosion-resistant copper-based alloys, being alloys resistant to stress corrosion; metal building materials; transportable buildings of metal; non-electric cables and wires of metal and metal alloys; metal hardware; pipes and tubes of metal; goods of common metal not included in other classes, namely valves (not parts of machines), junctions for pipes, parts and fittings for the aforesaid valves and pipe junctions. Valve stems (parts of machines); electric, electric motor-driven, electrothermal and electromechancial valve drives. Apparatus for lighting, heating, refrigerating, steam generating, cooking, ventilating, water supply and distribution, air-conditioning and sanitary purposes in buildings; control valves included in this class; parts for heating, steam generating, ventilating, water supply and sanitary installations, namely, one-way and multiway valves, tension regulator valves, pressure regulator valves, volume regulator valves, thermostat-controlled metal valves, thermostat superstructures for valves; locking and multipath taps, water pipe apparatus and installations, apparatus and installations for degassing water; separators for the cleaning and purification of air or gas and ventilation apparatus, parts and fittings for the aforesaid goods. Joint packings; sealing gaskets; non-metal pipe nipples, non-metal insulating sleeves, non-metal fittings for pipes, namely flanges, pipe stoppers, pipe seals, fastening clips for pipes, junctions, not of metal, for pipes, flexible conduits and pipes, not of metal, hand-wheels, clamping screw couplings. Building construction, repair, installation, all the aforesaid services relating to HVS, namely heating, refrigerating, ventilating, water supply and temperature control. Education, providing of training, all the aforesaid services relating to water, heat and sanitation, namely heating, refrigerating, ventilating, water supply and temperature control. Scientific and industrial research, computer programming, design and updating of computer software, all the aforesaid services relating to plumbing, namely heating, refrigeration, ventilation, water supply and temperature control.