The invention relates to a connecting device for two pipes overlapping each other in sections, particularly for a molded hose overlapping a charge-air tube, including two wedge elements cooperating by wedge engagement in such a manner that an inner circumference of the connecting device is adjustable by relative motion of the two wedge elements. The wedge members can be arranged in axial direction in an overlapping manner so as to lock the wedge members in at least one relative position.