Common metals and their alloys; wires of common metal or principally of metal; metal alloys in this class; welding alloys in this class; welding rods of metal, principally of metal or of metal alloys; small items of metal hardware used for welding; metallic gas fittings; gas cylinders

Welding apparatus and welding machines, including gas and electric welding machines and portable welding apparatus; regulators (parts of welding machines); soldering apparatus and equipment in this class; metallic gas fittings (parts of welding machines)

Apparatus for testing humidity