METHOD FOR MANUFACTURING FLANGED PIPE

PROBLEM TO BE SOLVED: To provide a method for manufacturing a flanged pipe with small forming force easily.SOLUTION: In the method 10 for manufacturing the flanged pipe, when forming a pipe part by burring processing, inward compressive stress in a radial direction is imparted from an outer periphery of a member to be processed by an outer mold while having a burring punch as an inner mold, and the outer mold 3 is a cylindrical shape arranged to have a space 1a between an outer periphery of the burring punch 2 and the outer mold, and a surface 3a tapered inward to a base end side of the axial direction of the burring punch is formed on the inner surface, and relative movement with respect to the member 11 to be processed is possible in the same direction as the burring punch.