7 Electric welding machines, in particular electric butt welding machines, strand welding machines, conductor welding machines, wire welding machines, steel welding machines, flat steel welding machines, and cold welding machines; roll seam and flash-butt welding machines for welding wire ropes of metal, electric and non-electric wire ropes, electric wires, copper wire, aluminium wire, steel wire, steel pipes and tubes, steel alloys and steel strip, in particular steel cord; electric welding apparatus, electric soldering apparatus, in particular electric butt welding machines, strand welding machines, conductor welding machines, wire welding machines, steel welding machines, flat steel welding machines, and cold welding machines, roll seam and flash-butt welding machines for welding wire ropes of metal, electric and non-electric wire ropes, electric wires, copper wire, aluminium wire, steel wire, steel pipes and tubes, steel alloys and steel strip, in particular steel cord