What is UV CIPP pipe lining repair?

UV CIPP In-Situ Curing Pipe is a trenchless repair method that uses a fiberglass liner impregnated with UV-curing resin. The liner is inserted into the damaged pipe and cured using ultraviolet light, forming a new pipe within the old one. Danfix

Process

CCTV detection

Pipe cleaning

Liner installation

UV curing

Final test

Why choose UV CIPP technology?

No excavation required → No disruption to traffic

Rapid curing → Projects can be completed in hours

High structural strength → Long service life over 50 years

Suitable for municipal and industrial pipelines

Main advantages

Content high conversion rate

✔ UV curing – energy-saving and stable

✔ Real-time monitoring system

✔ Adjustable curing speed

✔ Suitable for DN200–DN1600

✔ High degree of automation → Reduces labor costs

Technical Specifications

Example pipe diameter: DN200–DN1600

Curing speed: 0.3–1.5 m/min

Cable length: 150–300 meters

UV lamp power: 3×1000W / Customizable

Control system: PLC + Touch screen

UV CIPP Pipe Repair Equipment

Working Principle

UV CIPP Pipe Repair Equipment is a trenchless pipeline rehabilitation system that restores damaged pipelines without excavation. The technology installs a glass fiber liner impregnated with UV-curable resin inside the existing pipe. A UV curing unit then passes through the liner, activating the resin with ultraviolet light to create a new, seamless structural pipe within the original pipeline.

Repair Process

1. Pipeline Inspection and Cleaning

The pipeline is first inspected using a CCTV inspection system to identify defects, pipe diameter, and rehabilitation length. High-pressure water jetting or mechanical cleaning equipment removes debris, grease, roots, and sediment to prepare the pipe for lining.

2. Liner Installation

The glass fiber liner pre-impregnated with UV-curable resin is pulled into the existing pipeline using a cable winch. Both ends are sealed, and compressed air expands the liner until it fits tightly against the inner wall of the host pipe.

3. UV Curing

A UV lamp train travels through the inflated liner at a controlled speed. The ultraviolet light activates the photoinitiators within the resin, causing rapid polymerization and curing. During the curing process, the system continuously monitors UV intensity, pulling speed, internal pressure, temperature, and curing progress to ensure uniform and reliable results.

4. Final Finishing

After curing, the liner ends are trimmed, lateral connections are reopened using a robotic cutter, and a final CCTV inspection verifies the rehabilitation quality before the pipeline is returned to service.

Applications

UV CIPP Pipe Repair Equipment is widely used for the rehabilitation of underground pipeline systems, including:

Municipal Infrastructure

• Sanitary sewer pipelines

• Stormwater pipelines

• Combined sewer systems

Industrial Pipelines

• Industrial wastewater pipelines

• Chemical drainage pipelines

• Cooling water pipelines

Building Drainage Systems

• Residential communities

• Commercial buildings

• Hospitals

• Schools

• Hotels

Public Infrastructure

• Airports

• Seaports

• Metro systems

• Highway drainage networks

• Railway drainage systems