Full Lining

Full lining (manhole to manhole) is one of the Cured-In-Place-Pipe (CIPP) systems for trenchless pipe repair / rehabilitation recognized and approved for use in Hong Kong by various government departments with responsibility for drainage and water supply systems such as DSD, HyD, WSD, ASD, HKHA, etc. Full lining can be installed using the water inversion, air inversion or air inflation method to undertake the works. The guideline repair time is 4-6 hours dependent on weather and general site conditions and, of course, pipe condition. During the lining operation, the pipeline must be taken out of service by setting up a flow diversion system.

We are also equipped with robotic cutters to undertake cutting and removal of intruding pipes and opening pipe connection after completion of lining works.

Equipment details:

• - Perma-liner air inversion system
• - Air compressor and three-phrase generator.
• - Various size of robotic cutter.
• - CIPP water Steamer.
• - CIPP water boiler.