A method for the separable joining and fastening of two circularly cylindrical pipe ends (2, 2A) with the same outside and inside diameters, in mutual non-rotatable extension of each other with coinciding central axes (3) is provided in which the pipe ends (2, 2A) are brought axially against each other and fastened radially, wherein a toothing (7) in the axial direction at one pipe end (2) engages with a corresponding toothing (7) in the axial direction at the other pipe end (2A) in a last section of the axial assembly for joining two pipe ends. Similarly, a system is provided with a joint sleeve and corresponding detent for keeping the pipe ends joined.