Pipe connection with a connecting portion formed onto the pipe

Abstract

A pipe connection has a connecting member ( ). The connecting member ( ) has a first end face ( ), a first conical bore ( ), starting to taper from the latter, which defines a first cone angle ( ). The connecting member also includes an axial bore length ( ) followed by a bore ( ). The outside of the connecting member ( ) has a threaded portion ( ). A nut ( ) has a second conical bore ( ) tapered in the direction opposite to the direction of the first conical bore ( ). The second conical bore defines a second cone angle ( ). A through-bore ( ) is in the nut ( ). A pipe ( ) has a pipe projection ( ) which extends into the bore ( ) of the connecting member ( ). A connecting portion ( ) is on the pipe ( ). A first conical tensioning face ( ) which cooperates with the first conical bore ( ) is on the connecting portion ( ). The first conical tensioning face defines a third cone angle ( ) which is greater than the first cone angle ( ) and whose axial length of overlap ( ) with the first conical bore ( ) is smaller than 15% of the axial bore length ( ) of the first conical bore ( ). The connecting portion ( ) has a second conical tensioning face ( ) which cooperates with the second conical bore ( ). The second conical tensioning face defines a fourth cone angle ( ) corresponding to the second cone angle ( ). On the radial inside of the first tensioning face ( ), an annular recess ( ) is arranged. The recess ( ) starts from the smallest cone diameter ( ) of the first tensioning face ( ) and extends over part of the axial length.