To eliminate the limits of ordinary flat welding flange automatic welding machine, improve the whole efficiency of the power and shipbuilding piping fabrication and welding quality. Can achieve synchronization at the ends of the flat welding flange and pipe matching, flat fillet weld between pipe and welding flanges between welding and tube and rib boat fillet weld.Fast moving by two large hydraulic cylinders, suitable for "flat welding flange GuanPing welding flange" artifact group...