Pipes, storage tanks and tubes of metal; safes; metal ores; pipework and fittings of metal for circulating fluids and powders; flap valves of metal, other than parts of machines; water pipe valves of metal; metal valves not being parts of machines; draw-off valves of metal, other than parts of machines; clack valves of metal, other than parts of machines; check valves of metal, other than parts of machines; metal pulleys, springs and valves, not including machine elements; metal valves for co...