Polypropylene pipe for gravity (non-pressurised) sewer systems, BENOR certified in accordance with NBN EN 1852-1. Supplied in RAL 7037 grey, suitable for rainwater drainage (RWA) and combined sewer systems. The pipes are equipped with a socket with insertion stop and EPDM seal. The pipes are marked with the following information: Certification, BENOR mark, ring stiffness, production date, recycling guarantee, take-back guarantee, manufacturer’s mark, diameter and wall thickness Application code: U or UD