1
chemical flux compositions for use in welding, brazing, and soldering operations, either to be applied to metal surfaces or to welding rods
6
metal alloys in the form of powder and solids for use in welding, brazing, and soldering operations
8
apparatus for use in welding, brazing, and soldering operations; namely, incandescent welders, acetylene torches, welding heads, and thermal spray diffusers for use therewith
9
electric apparatus used in welding, soldering, and brazing processes; namely, electric welding and arc welding apparatus; safety helmets for use in welding, brazing, and soldering operations
37
maintenance, renovation, and/or repair services for metallic and/or synthetic surfaces of machines and appliances including turbine blades, boring tools, cutters, and other parts and fittings of such machines or appliances
40
welding and plating services; service of applying protective coatings to metallic surfaces; metal shaping services
41
instructional and teaching services, all relating to fault/treatment diagnosis, maintenance, renovation and/or repair of installations, machines, or appliances having to do with metal plating, coating, shaping, and welding and of parts and fittings of intallations, machines, or appliances having to do with metal plating, coating, shaping, and welding
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