Metallic drain traps; valves of metal, other than parts of machines; water-pipe valves of metal; steel pipes; metal pipe fittings; metal pipe couplings and joint connectors; [ metal pipe clips; ] metal fittings for non-electric cables of metal; metal couplings for non-electric cables of metal; metal cable connectors; [ pipes and tubes of metal; reinforcing materials of metal for pipes; rotating junctions of metal for pipes; metal pipes and tubes for liquid and gas transfer; ] metal tubing and...