UV liner for the trenchless repair of underground and municipal sewers pipelines

Method for preparation of UV CIPP process

Use a CCTV robot to thread a rope to pull the bottom membrane: (use a braided rope, do not replace the rope at will, otherwise, the material or membrane will rotate in the pipe) the connection buckle between the rope head and the bottom membrane should be firmly fastened, and another rope to pull the material should be placed on the upper end of the bottom membrane (if a winch is used, it is a steel wire rope).

Ensure that the material and rope are not mixed with the rotation of the bottom membrane during the membrane pulling process. For long-distance materials with large pipe diameters, soapy water can be added to the bottom film to reduce the friction when the material is dragged.

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