NBC-250F MAG Welding Machine 1.High efficieny, energy saving 2.Power reach the standard, ... carry, has stable function.2.Three operation modes: continuous welding, spot welding, discontinuous welding, small splash, high success rate to arc starting, good ... arc stability.6.Small splash, small deformation, beautiful welding seam.7.Main circuit rectifier bridge is assembled by muilt-tube rectifier bridge ...