Integrated solutions for underground pipeline trenchless repair and renovation

The municipal underground pipeline is complex. How to repair it is a subject that needs detailed planning.

No one method can solve all problems. Each technology is a tool. The construction party needs a toolbox to solve different difficulties with different tools.

Underground pipelines have various structural and functional defects. The repair methods are different with different defect grades. Therefore, pipeline inspection and scheme evaluation are the key steps before trenchless repair.

Daoyunai Energy Saving Technology Co., Ltd. not only provides equipment and materials but also provides feasible schemes for reference.

As the integrated solutions provider, Daoyunai will service the underground world together with our partners.

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