Finolex SDR series sewerage pipes are specially designed for underground – non pressure applications like gravity drainage, sewer flow and transportation of soil & waste discharge. These pipes are available in sizes 110, 125, 160, 200, 250 and 315 mm in stiffness classes of SN-2, SN-4 & SN-8. Sewerage pipes come with selfit and ringfit sockets in a standard length of 3 & 6 meters. Selfit pipes are self-socketed and can be joined with the help of solvent cement; while Ringfit pipes need no threading or solvents for jointing and can withstand high pressures. In Sewerage Ringfit Pipes, EPDM Rubber Rings that have a long life are used. These rings can withstand high pressures. For ease of jointing and to ensure better insertion, Finolex rubber lubricant application is recommended