... pinhole porosity, crackle, abrasion, etc cold welding repairing machine (XKS-01) / metal defect repair machine Characteristics: 1. Not only resurfacing ... the metal, but also strengthen the surface coating of hard alloy such as tungsten carbide. 2. Simple operation ... after welding. 5. The electrodes has a wide range of sources, economic and practical. Description:1.Light weight, easy ...