... Welder 315A, 400A, 500A DIGITAL OPERATION PANEL HIGHLIGHT1. AC/DC TIG welding is mixed function, excellent weld, deep penetration and ... Digital single-chip microcomputer control function, preset various welding parameters.3. AC/DC pulse function, realizing both-side molding under single ... Optional panel of Automation Tig wire feeder: digital welding machine IGBT ac dc tig welder 315A, 400A, 500A