Forging technology for pipe fitting with flanges at two ends

The invention relates to a forging technology for a pipe fitting with flanges at two ends. The forging technology comprises the following steps: manufacturing a pipe blank; forging the pipe blank on a horizontal hydraulic press through a core bar and a model ring in a jacking and extending way; reserving a section of pipe blank for forming one end flange, and initially forging the pipe blank with one end flange; carrying out flame cutting to remove bottom end of the pipe blank and abandoned material at the flange end; locally heating the other end of the pipe blank on a vertical hydraulic press with a local device; and pressing and upsetting another end flange of the pipe blank on the vertical hydraulic press with a flange upsetting device. The pipe fitting manufactured by the invention has little follow-up working allowance for the appearance, so that materials are saved, the manufacturing period is shortened and the manufacturing cost is reduced. At the same time, with the adoption of the flange forging for