We provide various sizes of wire tubes from the reel to the working parts. The material selected for the wire tubes has enough anti bending ability, so that when the wiring has a certain amount of tension, it can still maintain a relatively fixed shape and avoid serious quality problems such as unqualified arc and even cold solder joints. In the inner wall of the wire tubes there is a smooth coating, to ensure that the wire tubes cannot be scratched when the aluminum wires wire, and at the same time to ensure that the wire tubes not easy to dip aluminum.