Electric welding machines; Machines for welding (electric); Plasma welding machines; Welding machines, electric; Wire welding machines; Electrodes for welding machines; Arc welding electrodes; Consumable electrodes for use in welding; Electrodes for arc welding; Electrode or filler wire feeders (parts of electric arc welding apparatus); Electrodes for electric welding; Electrodes for welding; Welding electrodes; Tubular welding electrodes (electric); Welding apparatus for tig welding (gas-operated)