... :1) Digital Display, 2T/4T trigger. AC/DC, pulse, TIG and MMA are available. Current ... steel, copper and non-ferrous metal with DC TIG function, aluminum and aluminum alloy welding is available ... by AC function.4) Adjustable pulse frequency and pulse ... V)182023Pre-flow (s)0-20-20-2No-load voltage (V)565445Rated duty cycle (%)606060ARC-StartingHFHFHFPulse Frequency ...