When heavy traffic in central Stockholm made traditional pipe replacement nearly impossible, CarboSeal® offered the perfect alternative. In collaboration with Stockholm Exergi and installation experts Pollex, we successfully relined a 30-meter section of DN150 district heating pipe.
The decision to use CarboSeal wasn’t just about cost—it was about value. While the network owner's expenses were comparable to traditional dig-and-replace methods, the societal cost savings were immense. No disruptive traffic arrangements, no lengthy closures—just efficient, minimal-impact renovation.
The project wasn’t without its challenges. The condition of the pipe was worse than expected, requiring us to bring in a milling machine to remove welding residuals. Yet, we completed the entire project in less than two days, curing both pipes simultaneously to save time and minimize disruption.
This project is a testament to how relining can overcome urban infrastructure challenges while delivering long-term benefits. By thinking beyond traditional methods, we’re driving progress in district heating solutions—one project at a time.
Discover more about the societal benefits of relining in this Energi Article