For customers with no special requirements regarding the welding appearance, we recommend using this seam welder. This seam welding machine produces a current by the collision of the anode and cathode for welding sheet metal. The welding arc is specifically modified for special characteristics found in galvanized sheet metal to create a firmer stitch on the galvanized sheet metal. It carries out both pulse and continuous weld, with an adjustable welding speed on the control panel.