Daoyunai UV Liner for Trenchless Sewer Repair DN100-DN2000

Trenchless Sewer Rehabilitation with Daoyunai UV Liner ranging DN100-DN2000

The Daoyunai UV Liner is an advanced trenchless technology designed to rehabilitate aging or damaged sewer pipelines without the need for traditional excavation. It utilizes ultraviolet (UV) light-cured-in-place pipe (CIPP) technology, offering a fast, efficient, and environmentally friendly method of pipe repair. This technique suits urban environments where surface disruption must be minimized.

Constructed from high-strength fiberglass and UV-reactive resin, the Daoyunai UV Liner is engineered for durability, chemical resistance, and long-term performance. Once inserted into the pipeline, the liner is inflated to fit the interior of the existing pipe and then cured using UV light. This process significantly reduces curing time compared to traditional steam or hot water methods, allowing for rapid installation—often within a few hours.

One key advantage of the Daoyunai UV Liner is its seamless, jointless structure, which eliminates points of failure like leaks or root intrusion. It also improves hydraulic performance by restoring the pipe's structural integrity and smooth internal surface.

This solution is ideal for municipal, industrial, and commercial applications, offering a cost-effective and low-disruption alternative to full pipe replacement. With a service life exceeding 50 years, the Daoyunai UV Liner represents a smart investment in infrastructure longevity, sustainability, and operational efficiency for modern sewer systems.

Daoyunai Energy Saving Technology Limited has been committed to manufacturing trenchless CIPP UV cure systems with liners and CCTV inspection crawlers for underground pipelines to service customers all over the world.

The product range covers four series and more than 20 models in the underground pipeline trenchless repair industry:

1. UV curing and repair integrated system D919: LED lamp curing and high-voltage mercury lamp curing.

2. UV cure liner: from diameter DN200 up to DN1800

3. Hot water cure liner: impregnated liner to invert by water gravity and cure by hot water

4. Pipeline inspection robots crawler D18 and D18s: CCTV video inspection of pipeline defects

5. Pipeline periscope D16S: quickly  view the internal defects of the pipeline

Headquartered in Shanghai, Daoyunai has a number of independent intellectual property rights and also has a manufacturing base and R&D and testing center in Suqian City, Jiangsu Province, covering an area of more than 35000 square meters, which fully implements the international quality management system.

Focused on producing trenchless CIPP system with liners and inspection CCTV

Committed to providing solutions for reducing costs and improving efficiency