Trenchless Rehabilitation of District Heating Pipes

01
This is CarboSeal

The first Carbon Liner ever

Withstanding Harsh Conditions

CarboSeal is a unique solution for replacing subterranean service pipes and structures with little or no excavation.  After years of development and testing, PPR has created CarboSeal—a pipe lining system that withstands the high-heat, high-pressure corrosive environment in and around district heating pipes.

Interested in CarboSeal? Feel free to contact us!

02
Characteristics

A Unique Solution

Non-Invasive

The entire underground pipe system is renewed without disturbing the activities above the pipe. Traffic, businesses, and other activities is left uninterrupted during the process. It is a fast, cost efficient solution for district heating pipe system rehabilitation.

Long-Lasting

CarboSeal is a composite of carbon fibre and high temperature epoxy resin. The epoxy resin has been developed to withstand high temperatures in wet conditions and is combined with a type of carbon fibre that is not affected by water. This material system has been developed to withstand high-pressure, high-temperature and corrosive environments over time.

Developed for Tough Conditions

The entire underground pipe system can be renewed without disturbing any activities above. Traffic, businesses, and other activities remain uninterrupted during the process, making this a fast, cost-efficient solution for renewing district heating pipe systems.

Non-Invasive

The entire underground pipe system is renewed without disturbing the activities above the pipe. Traffic, businesses, and other activities is left uninterrupted during the process. It is a fast, cost efficient solution for district heating pipe system rehabilitation.

Long-Lasting

CarboSeal is a composite of carbon fibre and high temperature epoxy resin. The epoxy resin has been developed to withstand high temperatures in wet conditions and is combined with a type of carbon fibre that is not affected by water. This material system has been developed to withstand high-pressure, high-temperature and corrosive environments over time.

CarboSeal - Relining for District Heating

Developed for Tough Conditions

The entire underground pipe system can be renewed without disturbing any activities above. Traffic, businesses, and other activities remain uninterrupted during the process, making this a fast, cost-efficient solution for renewing district heating pipe systems.

03
Our Offering

A Verified & Supported Product

Verified

Thorough work by the Research Institute of Sweden (RISE) and other partners PPR has proved that CarboSeal can overcome the issues encountered by conventional trenchless technologies when applied to district heating pipes.

Support

We have long experience of working with CarboSeal, and we offer training for installation companies to ensure the best possible outcome.
If you are interested in installing CarboSeal or finding out more, you are welcome to contact us, and we will answer all your questions.

Verified

Thorough work by the Research Institute of Sweden (RISE) and other partners PPR has proved that CarboSeal can overcome the issues encountered by conventional trenchless technologies when applied to district heating pipes.

Support

We have long experience of working with CarboSeal, and we offer training for installation companies to ensure the best possible outcome.
If you are interested in installing CarboSeal or finding out more, you are welcome to contact us, and we will answer all your questions.

CarboSeal - Relining for District Heating
04
How it Works

5 Steps to the Renewal

1. Cleaning the Host Pipe

Start by cleaning the host pipe to remove foreign objects, welding residues, sediments etc.

2. Video and Dimension Control

Inspect to ensure secure pull-in and installation of the liner.

3. Pull in the Liner

The liner is pulled in by winch on a protective film. Several hundred metres of pipe can be renewed in one shot.

4. Curing with Steam

After the liner is pulled in, pressurized steam is applied, which unfolds and hardens the liner against the host pipe.

5. Connecting the Renovated Pipe

Special couplings are used to seal the transition between liner and host pipe. Air is used to perform a leakproofing test before sealing the openings by welding.

1. Cleaning the Host Pipe

Start by cleaning the host pipe to remove foreign objects, welding residues, sediments etc.

2. Video and Dimension Control

Inspect to ensure secure pull-in and installation of the liner.

3. Pull in the Liner

The liner is pulled in by winch on a protective film. Several hundred metres of pipe can be renewed in one shot.

4. Curing with Steam

After the liner is pulled in, pressurized steam is applied, which unfolds and hardens the liner against the host pipe.

5. Connecting the Renovated Pipe

Special couplings are used to seal the transition between liner and host pipe. Air is used to perform a leakproofing test before sealing the openings by welding.

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