1,KHB12-80 Orbit tube/tube plate welding machine. 2,Used for welding of flush, protruding, recessed tubes or welding behind the tube plate. 3,Standard welding head for tube-to-tube plate welds with the automatic TIG process, with or without filler wire. 4,Suitable for pipes with outside diameters of 12 to 89 mm. 5,High duty cycle due to water cooling. 6,Water-cooled welding torch, capacity 300A max.Under argon with direct current, with or without pulsing. 7,8 m long hose assembly for connection to power source. 8,All welding parameters fully programmable. 9,Up to 100 programmes storage. 10,LCD touch screen man-machine contact surface. 11,High quality welded joint guarantee. 12,Improves the product quality.