... edge chipping, crackle, abrasion, wear and tear, miscalculation in manufacture XKS-02 cast iron defect welding machine / weld pin hole ... mold, die-casting, pressure casting dies, metal products, machine spare parts and other tools.2. Suitable defect: Pin holes ... die steel, stainless steel, casting steel, cast iron, cast aluminum, tungsten carbide alloy, and all electrical conductor.4. The position: ...