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Pre-insulated Pipes

Smart networks for decades of service

For decades, we’ve worked closely together with engineers, municipalities, contractors, and installers to drive continuous innovation in the development of our district heating and cooling systems. Today, our pre-insulated pipe systems go above and beyond industry standards in ensuring reliability, durable performance, simplicity, and speed of installation.

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Network solutions for any challenge

We offer a complete range of flexible pre-insulated pipes ideal for district heating, cooling, and potable water applications in renovation, newbuild or retrofit projects. All our network solutions are fully adaptable to local circumstances and future needs. From single take-away box solutions for A to B connections to complete prefabricated district heating and cooling networks on coil.

Discover our range of pre-insulated pipe systems:

  • Flexalen 600: Cradle to Cradle Certified™ Silver, and the most popular choice
  • Flexalen SL semi-rigid pipes for high volume networks
  • Flexalen 1000+ multi-pipe system for absolute freedom in network design
  • Tailor-made prefabrications combining optimal reliability and installation speed
  • Complete range of tools and accessories to facilitate system installation

Why choose Thermaflex pre-insulated pipes?

  • Quick and easy installation
  • High energy efficiency
  • Consistent performance over time
  • Extended lifetime
  • Fully and homogeneously weldable for increased reliability
  • Non-corrodible
  • Modern high-end materials
  • Technical benefits of Polybutene (PB-1)
  • High ecological value
  • Extensive installation support: integrated network design, calculation tools, training and on-site support

Downloads

Certificates

  Determination of the resistance to internal pressure at a constant temperature - PB pipes grey PDF 112 KB Preview Download Mail

Determination of the resistance to internal pressure at a constant temperature according to BRL K17401 - PB pipes grey

  Determination of influence of heating at 110 degrees - PB pipes grey PDF 104 KB Preview Download Mail

Determination of influence of heating at 110 degrees according to DVGW W544  - PB pipes

  KTW organoleptic test certificate - Flexalen, PB pipes - Size group 1 PDF 221 KB Preview Download Mail

KTW organoleptic test certificate for drinking water purposes - Flexalen, PB pipes - Size group 1

  Temperature cycling test certificate - Flexalen PDF 1536 KB Preview Download Mail

Temperature cycling test certificate according to EN 12293 - Flexalen

  Determination of influence of heating at 110 degrees - PB pipes PDF 103 KB Preview Download Mail

Determination of influence of heating at 110 degrees according to DVGW W544

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