Welding and cutting installations, machines, apparatus and devices, namely, electric arc welders, [ plasma cutting machines, laser and autogenous welding and cutting machines, ] welding torches; parts, wearing parts and accessories for welding and cutting machines, namely, welding 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 conn...