Formed pipe end-section of a pipeline and pipe screw connection

A formed pipe end-section of a pipeline 1 for connecting the pipeline at an end comprises an annular bead 7, a chamfer 10, and a radial recess 11. The annular bead features a first abutment face 8 facing away from the end of the pipeline, and a second abutment face 9 facing towards the end of the pipeline. The chamfer reduces the diameter of the pipe end section from the annular bead towards the end of the pipeline, and extends at least bwetween the annular bead and the radial recess. The radial recess is for accommodating a sealing ring 12. Also disclosed is a pipe screw-connection for reversibly connecting a pipeline, having the disclosed pipe end section, to an adapter 2 which has a front face 14 at a connecting end and an inner cone 15 extending from the front face. The adaptor forms a tubular member for passing through a medium. The pipe end section can further comprise a coupling nut 3 which engages with the first abutment face 8, and can be screw-connected to the adapter 2.