A cylindrical wall (12) for filtering solid particles in a fluid, through which a fluid can circulate, said wall comprising at least one perforated plate (23) having a finite radius of curvature, andat least one mesh element (22) placed over said perforated plate, this mesh element comprising a plurality of rigid wires (26, 26A, 26B, 26C, 26D) extending along a longitudinal direction and positioned adjacent to one another so as to filter the solid particles, characterized in that the mesh element is arranged so that the wires are secured to one another only by means of connections (27) between adjacent wires, each connection between two adjacent wires occupying only a portion of the length of said wires, and having a thickness that is less than or equal to the thickness of these wires inproximity to this connection.