UV cure product for urban pipes service and repair by no excavation process

UV CIPP curing trenchless repair:

UV curing uses UV light as the curing medium. The resin contains a photoinitiator. When irradiated by UV light of a specific wavelength, the resin will produce a curing reaction to form a new high-strength lined pipe. The installation method is mainly pull-in type, which is applicable to drainage pipes of various shapes with a pipe diameter of 150mm~1600mm. During construction, the windlass is used to pull the glass fiber inner liner filled with resin into the existing pipeline, and the inner liner is "blown" by a large flow fan, and then clings to the inner wall of the existing pipeline. After solidification, the pipeline can not rely on the original pipeline, and can independently bear internal and external pressure. The repaired new pipe will not affect the water flow section, and the normal service life is more than 50 years.

UV curing repair process:

(fixed binding head) (sent to lamp rack) (UV curing) (repaired pipe)

UV curing repair features and advantages:

◆ little impact on traffic, etc. Trenchless lining repair without excavation of work pit;

◆ good construction controllability and short construction period. The whole curing process is monitored by CCTV, and the pulling in and curing can be completed in only 3 to 4 hours;

◆ energy saving and high security. UV curing is adopted, with low energy demand. No water or steam curing is used at the construction site, and no toxic gas or other harmful substances are produced;

◆ the inner liner has a good sealing effect, strong corrosion-resistance, and long service life;

◆ high mechanical strength can be achieved under small thickness to reduce the current carrying loss of pipe diameter;

◆ high bending elastic modulus, bending, and tensile strength;

◆ many domestic and international authoritative quality certifications.

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