DC/PULSE TIG Welder. All ferrous metals copper, Aluminium ,titanium and stainless steel material can be omnibearing welding in all position.The welding current is stable and stepless adjustable.The welding seam is nice. few spatter and low noise occurs during welding.The welder is small volume,light in weight and easy to move.It is particularly suitable for enterprise of pressure vessel,building,shipping and petrochemical works. It is the priority product to replace