a) Sleeved connection for thermally insulated conducting pipes. b) The connection is characterised in that the tape 6 is inserted in the surface of the sleeve 5 to be welded and in that the zone of the external surface of the sleeve 5 to be welded there is provision for a groove 7 corresponding to the width of the tape and in that the tape is placed in this groove in order to be locked in place there. The invention relates to a sleeved connection for thermally insulated conducting pipes. <IMAGE>