Major Milestone One Kilometer of DN2000 UV CIPP Lining Successfully Installed

In a significant advancement for municipal infrastructure renewal, a project team has successfully completed the installation of approximately one kilometer of DN2000 UV-cured CIPP (Cured-In-Place Pipe) liner in August 2025.

This ambitious undertaking involved rehabilitating a critical main sewer trunk line using state-of-the-art trenchless UV CIPP technology. The DN2000 specification denotes a massive 2000mm diameter pipe, making this a large-scale and complex engineering achievement.

The UV CIPP method is a highly efficient and environmentally friendly rehabilitation technique. It involves inserting a resin-saturated fiberglass liner into the existing host pipe and curing it into a strong, durable "pipe-within-a-pipe" using ultraviolet light. This method minimizes surface disruption, traffic closures, and excavation, leading to a faster project completion with a significantly reduced environmental footprint compared to traditional pipe replacement.

The successful completion of this one-kilometer section marks a key milestone for the City's Long-Term Infrastructure Plan. It ensures the long-term structural integrity and performance of the pipeline, enhancing service reliability for years to come.

Daoyunai is the UV curing liner and the equipment manufacturer. We are so proud of that.