... , insulating, two times rectify, then outputs DC power supply for welding.Characteristics:A. Moistureproof/ ... currentagainst shock.E. One machine can be used in DC Arc welding, Tig Arc welding and Manual ... good power saving.Applications:A: It can be used for welding all kinds of carbon steel, ... and their alloys.B: It can be widely used in machinery industry, oil and chemical industry, shipbuilding ...