Apparatus for electric welding; Apparatus for mechanised welding (other than electric); Apparatus for the welding of materials; Arc welding apparatus; Arc welding electrodes; Autogenous welding apparatus (gas operated); Autogenous welding machines; Consumable electrodes for use in welding; Electric arc welding apparatus; Electric hot plate welding apparatus; Electric machines for incandescent welding; Electric machines for resistance welding; Electric machines for spark welding; Electric radiator welding machines; Electric resistance welding apparatus; Electric resistance welding machines; Electric track welding machines; Electric welding apparatus; Electric welding guns; Electric welding instruments; Electric welding machines; Electric welding torches; Electric wire welding apparatus, other than machines; Electrical arc welding apparatus; Electrical arc welding heads; Electrical welding apparatus; Electrical welding instruments; Electrode or filler wire feeders (parts of electric arc welding apparatus); Electrodes for arc welding; Electrodes for electric welding; Electrodes for welding; Electrodes for welding machines; Electrofusion welding apparatus (other than machines); Electrofusion welding machines; Finished welding tips; Gas welding apparatus; Gas welding machines; High frequency welding machines; Hot air welding machines; Laser welding apparatus; Machines for resistance welding (gas operated); Machines for welding (electric); Machines for welding (gas); Machines for welding corners on PVC window frames; Metal welding apparatus (electric); Metal welding apparatus (gas); Metal welding machines (electric); Metal welding machines (gas); Non-autogenous electric welding apparatus; Plasma welding apparatus (gas-operated); Plasma welding machines; Plastics welding machines; Regulators for use in welding machines; Resistance welding apparatus; Robotic electric welding machines; Robotic electrical welding apparatus; Robots for welding; Single column welding presses; Spot welding apparatus (electric); Spot welding machines; Thermal contact welding machines; Thermal impulse welding machines; Tubular welding electrodes (electric); Ultrasonic welding apparatus for plastics assembly; Ultrasonic welding heads; Ultrasonic welding machines; Welding apparatus for tig welding (gas-operated); Welding apparatus operated by compressed air; Welding apparatus operated by gas; Welding apparatus operated by oxyacetylene; Welding apparatus, electric; Welding apparatus, gas-operated; Welding current generators; Welding electrodes; Welding machines for thermoplastic tubes; Welding machines for use in the jewellery trade; Welding machines for welding plastics material; Welding machines, electric; Welding torches (electric); Welding torches (gas-operated); Wire welding machines