are placed around the connection 1 i e around the configuration of the tension elements 6 so that the latter are fixed at least during assembly fig1 the tension elements 6 may also be cooled due to the fact that heat conduction from the hot steam d to the tension elements 6 is only indirect the tension elements 6 can be cooled in a simple manner for example by cooling ribs or by axial cooling bores on account of the heat transmission resistance between the medium d carried in the pipeline 4 5 and the tension elements 6 only a comparatively small quantity of heat is to be dissipated so that only a correspondingly slight reduction in the temperature of the medium d in the pipeline 4 5 is effected for the cooling the tension elements 6 may be configured with a defined radial gap 22 fig1 relative to the pipeline 4 5 in order to additionally reduce the heat conduction the rounding off of the surface edges 13 to 15 of the tension element 6 and of the surface corners 13 u2032 to 15 u2032 corresponding with the latter on the pipe outer surface 10 is of considerable importance with regard to a favorable configuration of the connecting partners 6 and 7 8 from the notching point of.