Abstract: The invention relates to a system of flexible pipes (1) and coupling elements (6) for coupling the flexible pipes. The flexible pipes each comprise an inner conduit and multiple cavities running substantially parallel over the outer surface of the inner conduit. The coupling elements each comprise an inner opening and multiple outer openings surrounding the inner opening, such that, in the coupled state, the inner conduits of adjacent flexible pipes are connected by means of the inner opening of the intermediate coupling element and the cavities of adjacent flexible pipes are connected by means of the outer openings of the intermediate coupling element. The invention further relates to a method of producing a flexible pipe as described as part of the system.