regulate and control, automatic welding process carried out, the series of welding machine can weld 2.0 + 2.0 below the ... -63, 100,160,200 series pneumatic seam welder wheels can even adjust the welding pressure, and not because of gas supply networks and fluctuations ... to regulate and control, automatic welding process carried out, the series of welding machine can weld 2.0 + 2.0 below the ...