Autogenous soldering machines; Cemented carbide tips; Electric arc cutting apparatus; Electric arc welding apparatus; Electric powered soldering irons; Electric soldering apparatus; Electric soldering irons; Gas-operated soldering irons; Gas-operated welding machines; Soldering apparatus, electric; Soldering irons, electric; Soldering irons, gas-operated; Soldering lamps; Welding machines, electric; Welding torches