Generator high frequency induction Elestar, mod. HFP 70 Kw, for welding of a wide range of tubes of aluminum, steel stainless ferritic and austenitic, of copper and brass, power 70 kw, thick of blade OK 0. 15-0. 75 mm, voltage 400V 50 Hz, head III of welding with arm adjustable, heat exchanger of water, control unit with digital display.