After the assembly of the spot welding machine, the pressure is applied through the electrode, and the resistance heat generated by the current passing through the contact surface and adjacent area of the joint is used for welding. Row welding machine is also called wire welding machine. The welding machine is equippeAfter the assembly of the spot welding machine, the pressure is applied through the electrode, and the resistance heat generated by the current passing through the contact surface and adjacent area of the joint is used for welding. Row welding machine is also called wire welding machine. The welding machine is equippe