... can be used in DC Arc welding, Tig Arc welding and Manual weldingF. Pulse frequency and pulse ration can be ... self-adjust circuit.J. Smaller size, less weight, portable and good power saving.Applications:A: It can be used ... in machinery industry, oil and chemical industry, shipbuilding industry, vehicle industry, construction and decoration industry, etc. Inverter DC Pulsed Tungsten Arc Welder