Building materials of metal; valves of metal, other than parts of machines; bottles [metal containers] for compressed gas or liquid air; locks of metal, other than electric; signboards of metal; works of art of common metal; springs [metal hardware]; safes; nails; rods of metal for welding.

Compressed air machines; alternators; hand-held tools, other than hand-operated; computer aided character carver; saws [machines]; spray gun; drilling heads [parts of machines]; welding machines, electric; pneumatic nail gun; hydraulic press.