... cold welding repairing machine (XKS-01) / pin hole repair machine (XKS-01) / weld metal surface holes machine Characteristics: 1. Not only ... , pressure casting dies, metal products, machine spare parts and other tools.2. Suitable defect: Pin holes, gas hole, burring, flash, bump ... 3. Comparsion between TIG welder & cold welder welding effect: pin hole repair machine, weld metal surface holes machine