PIPE JUNCTION AND DEVICE FOR PRODUCING THE SAME

摘要

In a weld-free pipe junction having at least two inlets (E) and one outlet (A), the outlet (A) is formed by a neck (4) shaped in the side wall of a pipe (1, 1') whose ends (2, 3) form both inlets (E). A device for producing such a pipe junction from a pipe (1, 1') by high pressure inner forming has the following characteristics: a forging die is engraved with a first recess (6) for receiving a pipe (1, 1') and with a second recess (11) that opens into the first recess; two axial male dies (7) are provided in the first recess (6), and at least one of the male dies (7) has a duct (8) for supplying a pressurised medium (9) to the inside of the pipe (1, 1') laid into the first recess; an opposite male die (12) is guided in the second recess (11).