Detailed Product Description IGBT Invert Pulsed TIG Welding Machine WSM-series TIG welding machine is suitable for both SMAW and TIG welding of low-carbon steel,medium-carbon steel,high-strength steel,stainless steel,Cu and Cu alloy,Ti and Ti alloy and other nonferrous metal except MgAl.Spot-weld function.The 500Hz pulse frequency increases the arc direction force and is especially suitable for ...