Machines and machine tools for treatment of materials; welding and cutting installations, machines, apparatus and devices, in particular arc, plasma, laser and autogenous welding and cutting machines, apparatus or torches; parts, wearing parts and accessories for the aforesaid goods, including electrode holders, gas nozzles, current contact tips, gas welding torch connections, protective gas connecting hoses, tip adapters, gas diffusers, gas lenses, clamping sleeves, clamping sleeve housings, central connectors for protective gas connecting hoses with plugs and bushings and vortex or swirl rings, back caps, welding electrodes, in particular tungsten and carbon electrodes, plasma electrodes, plasma nozzles, spirals and bores for welding wire; wire feeding systems for welding and laser applications; soldering wire cutters; suction apparatus for electric or gas welding and cutting; cleaning equipment and apparatus for welding and cutting torches, in particular blow and injector torches for automated welding; tool changing systems for automated welding and cutting, in particular torch neck changing systems; torch holders, adjustment devices for robot welding and cutting torches; mechanical positioning aids for programming welding robots; gas-saving devices for welding and cutting devices; gouging blowpipes for gouging, weld seam preparation and finishing of metals, and parts therefor; grinding machines for grinding welding electrodes; robot mounts; condensate separators; fume extraction apparatus, in particular fume-extraction welding torches; fume purification apparatus

Electrical and electronic controllers and controls for installations, in particular micro-process controllers; optical laser beam systems and optical sensor systems for welding and cutting, in particular optical weld seam guiding sensors; optical positioning aids for programming welding robots; power sources for welding and cutting installations; computer software and programs therefor; gloves for protection against injuries, in particular welding gloves; welding shields, in particular welding helmets