Abstract: The invention concerns a method whereby after the saddle hub (3) has been placed on the pipe (2a, 2b, 2c), the open and deformable ring (4) is closed back on the pipe, the screw (5) is folded down and the screw is clamped to complete the locking of the plate (3) whereon is mounted the device (12, 29) for boring the pipe. The invention is useful for branch channel connection on a pipe (2a, 2b, 2c).