Wall thickness：7.3mm

Application：Portable water pipes

Project Introduction：Due to the long service life, there were problems such as aging and leakage. Pipe Material was Gray cast iron pipe and cement pipe，Burial Depth was 2 meters.

Before	After

During the construction period, Pro-liner dispatched professional technician to the work site to provide full-process technical guidance. Our technician conducted on-site supervision over key links such as pipeline pretreatment, liner pulling-in, and UV light curing to ensure that the construction parameters meet the liner performance requirements and process specifications.

Full Process of Potable Water pipe Rehabilitation
1. Pipe Cutting & CCTV Verification
Cut the pipe section with a smooth cut surface, then installed valves.

2. Pipe Pre-treatment
After high-pressure water jet cleaning, continue to remove pipe sediment using cleaning pigs (steel scraper pigs and rubber pigs).

3. UV Curing - glide foil Placement
After pre-treatment was completed, laid the glide foil inside the pipe.

4. UV Curing - Liner Insertion

Before inserting the UV-CIPP liner into the pipe, folded the liner in advance so that its width was smaller than the glide foil.

5. UV Curing - light insertion & Curing

After inflation and pressure holding, inserted the UV light train into the pipe to cure the liner.

6. Acceptance - Pressure Test
Once curing was complete, conducted a pressure test.