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Drainage Pipeline Repair

CIPP rehabilitation for municipal drainage networks — DN100 to DN3000

Overview

About this application

Trenchless repair of drainage pipelines is one of the most widely applied fields for CIPP technology. Damaged sewers, storm drains, and combined networks can be rehabilitated in-situ without excavation, restoring full structural and hydraulic capacity for another 50 years of service.

Drainage Pipeline Repair
Recommended Methods

How we approach drainage pipeline

Different damage profiles, host materials, and operating conditions require different rehabilitation approaches. Here are the methods best suited for this application sector.

UV-CIPP Rehabilitation

UV-CIPP (Ultraviolet Light-Cured In-Place Pipe) rehabilitation offers excellent construction controllability, a short project duration, and full-process inspectability. The liner utilizes UV curing — characterized by low energy consumption, cleanliness, high efficiency, and environmental friendliness. It minimizes disruption to traffic, eliminating the need for road closures or excavation work. The construction process requires neither water nor steam, making it suitable for implementation regardless of season.

Best for: High-traffic urban drainage; year-round projects
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PVC-U Spiral-Wound Lining

PVC-U spiral-wound lining is specifically designed for the rehabilitation of non-pressure pipelines — including rectangular, egg-shaped, or extra-large box culverts — and is capable of repairing pipes with diameters ranging from DN800 to DN3000. The installation process involves no chemical reactions, generates no pollution, and causes no structural damage. Its patented T-profile design ensures the liner possesses exceptional extensibility and toughness.

Best for: Large-diameter sewers and box culverts; complex geological conditions
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FIPP Thermoplastic Rehabilitation

FIPP (Formed-in-Place Pipe) thermoplastic rehabilitation leverages the inherent ability of polymer materials to undergo multiple heat-forming cycles. The process involves pulling a prefabricated, specialized PVC liner into the existing host pipe, followed by steam pressurization and subsequent cooling to form a new, integral structure. The PVC liner material is technologically mature, offers stable performance, and forms a seamless monolithic structure with no intermediate joints.

Best for: Rapid installation; minimal urban footprint
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Steam-Cured CIPP Rehabilitation

Steam-cured CIPP rehabilitation is a method in which a professionally impregnated polyester liner is inverted into the existing host pipe using specialized equipment, and subsequently cured via a combination of air pressure and steam. Widely adopted in Europe and the United States, this method requires no excavation and occupies very little ground space. It allows for a rapid transition from the inversion phase to the steam-curing phase, enabling the rehabilitation of pipe segments up to 300 meters in length in a single operation. Applicable to pipe diameters DN100 to DN2000.

Best for: Long sewer segments; pipelines with bends
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Composite Spray-Lining

Composite material spray-lining rehabilitation involves using specialized equipment to uniformly spray a coating — typically consisting of cement mortar or a polyurethane mixture — onto the inner walls of a pipeline. This process creates a new protective and reinforcing layer, and is widely utilized for the rehabilitation of urban manholes, drainage pipelines, and tunnels.

Best for: Manholes; large culverts; combined corrosion-protection + structural repair
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Related Products

Recommended products for this application

UV-CIPP Felt Liner

UV-CIPP Felt Liner

UV-cured fiberglass tube, DN200–DN2200

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Inversion Dry Felt Tube

Inversion Dry Felt Tube

Steam-cured felt tube, DN100–DN2000

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Spiral Wound PVC Tube

Spiral Wound PVC Tube

Live-flow lining, DN600–DN2500

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FIPP Thermoplastic Tube

FIPP Thermoplastic Tube

Pre-formed PVC liner, DN150–DN1000

View product

Project requirements for drainage pipeline repair?

Send us pipe diameter, length, host material, and conveyed media — we'll recommend the optimal liner system and curing method.

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