rehabilitation methods for over-aged pipelines and tunnels as part of a joint research project with the National Institute for Rural Engineering. These include the SIL method, which uses thin-walled FRPM pipes to rehabilitate over-aged pipelines, and the horseshoe-type pipe-in-tunnel construction method for the rehabilitation of over-aged tunnels. These methods allow fast rehabilitation while reducing costs. More information: www.kurimoto.co.jp Structure of Kurimoto’s FRPM pipes original rubber ring design guarantee outstanding water tightness, with no risk of leakage or external injuries. FRPM pipes also have a smooth inner surface with a velocity coefficient c=150 (Hazen-Williams formula) and a roughness coefficient n=0.010 (Manning formula). They exhibit excellent hydraulic characteristics. As compared with steel and concrete pipes, the smaller diameter of FRPM pipes can be used at the same flow volume and inclination. Main characteristics FRPM pipe applications FRPM pipes can replace steel and concrete pipes to lower costs and prolong the system’s life. They are used in the following applications: Sewage: 200-3,000 mm in diameter; Jacking pipes : 150-1,650 mm in diameter Water irrigation systems : 200-3,000 mm in diameter Tube well casing and screen : 150-600 mm in diameter Power and communication cable protection : 100-300 mm in diameter Application FRPM pipes are specified in such standards as JSWAS K-2, JSWAS K-16 (Japan Sewage Works Association) and JIS A 5350 (Japanese Industrial Standards). Kurimoto developed No55 February - March 2010 / jec composites magazinehttp://www.kurimoto.co.jp http://www.oxeon.se