1, especially for dry stainless steel, carbon steel, aluminum and copper and all kinds of metal horizontal girth welding. 2, the workpiece adopt pneumatic a mold pressure. 3, can use argon arc welding, one-side welding double-sided forming, the welding quality stable 4, welding speed stepless speed adjustment, all kinds of action quickly and accurately, work performance is stable and reliable. 5, widely used in automobile, motorcycle, hardware, household appliances, stainless steel plate containers and the metal manufacturing processing industry.