... transforms, high efficiency , small volume, light weight DC PULSE TIG WELDING MACHINEMODELITEMWSM-200WSM-315WSM-400rated input voltage3380V±10% 50/60Hzrated input ... arc to be easy, the electric arc is stable, the welding quality is high;5. Pulse current, the pulse frequency, the pulse ... width may adjust willfully in the wide range;6. Arc welding splash is small, the electric current is stable, the ...