Small-radius pipe bending device

The utility model relates to a small-radius pipe bending device. The device is characterized by comprising two guiding rollers (1) which are arranged with one in front of another, a backward-pushing bent chuck (2) is arranged behind the guiding rollers (1), an induction ring (3) is arranged in front of the guiding rollers (1), a rotating shaft (4) which is vertically arranged is arranged on one side of the induction ring (3), the rotating shaft (4) is provided with a rotating arm (5) provided with a front chuck (6), the induction ring (3) comprises a main ring body (3.1) and an auxiliary ring body (3.2), a self-cooling water pipe (3.8) of the left half circle of the main ring body is arranged on the periphery of the left side of the left half circle of the main ring body (3.1), and a red band control or gas cooling pipe (3.9) is arranged on the periphery of the rear side of the left half circle of the main ring body (3.1). The small-radius pipe bending device has the advantages that red straps are distributed properly when medium frequency pipe bending is performed, no bumps are generated, and small-radius pipe bending is made to be smoothly performed.