... AC/DC pulse function,thus one side welding,two sides molding.*Stick welding function, welding rod welded.*Conveying the argon periodic in ... advance,adjustable perliminary current and the ascending time,so welding performance improverd in the area of starting arc.*Adjustable ... Cycle60%60%60%Dimension570x400x730570x400x730570x400x730Net Weight46kg51kg55kg AC/DC TIG Welder Welding Machine-UNITIG500PAC