... & Pin holes.gas holes. 2. welding effect is very good SZ-08 holes welding machine/ cast iron scratch welding machineMain Parameter:1.Model: SZ ... , forging dies, injection dies, die-casting, pressure casting dies, metal products, machine spare parts and other tools. Suitable material of SZ-08 ... jamb, bottom, deep cavitiy, flat surface, and etc. SZ-08 metal surface holes welding machine