Copper and its alloys, namely, copper-base alloys ingots; water pipes of copper alloys; copper alloy materials for building or construction, namely, copper alloy casting; pulleys of copper alloys not including machine elements; springs of copper alloys not including machine elements; metal valves of copper alloys not including machine elements; metal pipe junctions of copper alloys; metal pipe joints of copper alloys; metal pipe fittings of copper alloys; metal flanges of copper alloys; metal...