... welding machine TIG315AC/DC 1.welding style :DC/ TIG welding 2.4T control,ease of long-weld opera dc/ac inverter square ... wave spot welding TIG315AC/DC :welding style: DC TIG,AC TIG welding;using ... circuit and its components, welding, it has excellent stabilty;perfect user-friendly design: 1.digital display, clear and intuitive, precise regulation ...