The welding machine utilizes an electrode holding rod that serves dual purposes: securing the electrode's position and facilitating the transfer of current, pressure, and cooling water to it. Integrated within the grip is a cooling water channel, specifically designed to keep both the electrode and its head cool during spot welding operations. Constructed from either chromium zirconium copper or red copper, this rod ensures robust performance.Welding Equipment Welding Materials Stud Welding Machine