Condenser discharge screw welding machine is used to weld specially-made metal stud or stick on the surface of metal. The diameter of the stud is M4-M12. It enjoysthe advantages of short welding time period, small heat effect from the parentmetal, no damage to the relative mental surface, maintenance of the original beauty, fastness of welded part, and prominence of energy saving effect. UR-1800 Technical Data: Input Power Voltage: 220∨Phase single Frequency: 50HZ Rate Input Power Capacity: 2.8K∨A Max. store Energy: 1800J Electricize Voltage: 80-220∨ Insulation Class: H Size of Welding Bolt: Φ4-Φ8 Rated Duty Cycle: 80% Packing: Standard carton