HDPE tube, ribs Ø 400 SN8, length 6m

High density polyethylene pipes (HDPE) for non pressure underground systems, made through continuous co-extrusion of two layers; the internal layer shall be smooth to facilitate visual inspection with cameras, while the external layer shall be corrugated and of black colour. The system (pipe+joint) is fully compliant with standard EN 13476-1 and certified with product quality label issued by an accredited certification authority, with external nominal diameter DN/OD * mm, ring stiffness class SN ** (equal to *kN/square metres) measured according to standard. The pipe is produced by a company operating in compliance with the production quality system foreseen by standard EN ISO 9001/2000. Each length of pipes must be equipped with socket connection or external sleeve relative EPDM sealing gaskets in accordance with standard EN 681, to be placed in the first groove between two following corrugations of the pipe’s edge to introduce in the socket.