50KW pneumatic spot welder: 1, with spot welding, projection welding,row welding function; 2, pressure transmission, welding pressure constant; microcontroller integrated control can be high-quality automated welding process; can be a single spot, but also a continuous welding, weld quality and uniform 3, using strong water-cooled high-power thyristor, the output current with a strong, stable and reliable; 4, specific current slowly climbed up the system, no sparks flying, can be welded low-carbon steel, stainless steel, coated steel, non-ferrous metal wire, sheet, pipe.