... powersupply AC 380V, 50Hz, 3-phase (others available uponrequest, like: 220V, 60Hz, 3-phase) MCU for welding process, Model: AT89C52( ... , Taiwan)or digital display screenCoil spec. :- Angle- Nails per coil- Welding wires16°200 – 400 copper coated steel wire VF inverterModel ... AC 380V, 50Hz, 3-phase (others available uponrequest, like: 220V,60Hz, 3-phase) MCU for welding process, Model: AT89C52(ATMEL ...