The invention relates to a rail (1) comprising a rotating frame for a filtration device comprising filter cells which are disposed in the form of a carousel. The invention comprises: a first flange (2) which is cut in the shape of a circular or polygonal ring, a second flange (3) which is cut in the shape of a second circular or polygonal ring segment, a core (10) which is welded transversely to the inner surfaces (4, 6) of the flanges (2, 3) such as to form a H-shaped rail, and a wear plate (8) which is fixed to the outer surface (7) of the second flange. According to the invention, the aforementioned core (10) is formed from at least two steel crossties (11, 12) which are curved or folded parallel to on another and which are welded to the inner surfaces (4, 6) of the flanges (2, 3). Moreover, the second flange (3) and the wear plate (8) are provided with holes (13, 14) in which fixing elements (15) are disposed in order to fix the wear plate to the second flange in a detachable manner.