The application of multi-layer pipes was not to be restricted to domestic sewage. The POLO-ECO plus marked the introduction of the first multi-layer sewage pipe for larger applications. The top coat made from polypropylene acts as a protection from damage to the surface. The middle layer is made from mineral-reinforced, highly crystalline polypropylene and possesses the formidable properties of POLO-ECO plus. It guarantees enormous resistance, firmness and stiffness while being extremely tough and can therefore be very safely applied even under high stress. The inner layer displays an extremely high resistance to chemicals in the pH-range of 1 – 13, as well as a low roughness, thus allowing for optimum draining behaviour. A high abrasion fastness and impact strength round off the unique qualities of the inner layer. The light grey colouring is ideally suited to TV applications
