Hubbed flat welding flange

The utility model relates to the technical field of flat welding flanges, in particular to a hubbed flat welding flange. Comprising a flange plate and a flange neck, a plurality of horizontal connecting rods are fixedly installed on the outer surface of the flange neck, vertical connecting rods are fixedly installed at the ends, away from the flange neck, of the horizontal connecting rods, positioning blocks are fixedly installed on the left side and the right side of each vertical connecting rod, and installation cavities are formed in the horizontal connecting rods and the vertical connecting rods. The flange plate and the flange neck are installed together through the positioning blocks and the positioning grooves, and then the flange plate and the flange neck are stably fixed together through the first bolts and the threaded grooves. A horizontal spring ring and a vertical spring ring which are arranged on the horizontal connecting rod and the vertical connecting rod in a sleeving mode can reduce the vibr