regulate and control, automatic welding process carried out, the series of welding ... 1200 1500 2040FN-63, 100,160,200 series pneumatic seam welder wheels can even adjust the welding pressure, and not ... welding power and welding time are controller to regulate and control, automatic welding process carried out, the series of welding ... and stainless steel sheet, welding performance is good. seam welder