Efficient, durable, and sustainable piping solutions for heating, cooling, geothermal or biomass applications — designed to save energy and extend system life.
PRE-INSULATED PIPING SOLUTION
Flexalen® product line
Every degree of temperature loss represents wasted energy and cost. High-performance pre-insulated piping delivers energy efficiency, system longevity, and sustainable operations across heating, cooling, and water distribution.
Flexalen® 600
Pre-insulated piping for heating, cooling, and potable water networks with low heat losses and leak-tight performance.
Flexalen® 600 HP
Compact, pre-insulated solution for heat pump connections combining heating pipes and cable routing in one system.
Flexalen® PU
High-performance insulation for district heating networks with very low heat losses and large capacity.
Flexalen® Prefabrications
Factory-tested joints and branches for district heating and cooling that shorten installation time and ensure consistent quality.
Flexalen® Multiline
Multiple services—heating, domestic hot water, and recirculation—in one flexible, pre-insulated jacket pipe.
ProtecTube
Flexible, insulated protection for pipes and cables in underground and above-ground installations.
Flexalen® system accessories
Certified fittings, insulation kits, and sealing components for durable, energy-efficient installations.
Flexalen® tools
Welding tools for reliable polybutene-1 (PB-1) joints ensuring safe, leak-tight connections.
50
Years of Expertise
45
Countries Served Worldwide
500
Industrial Clients
20
Product Lines
OUR SERVICES
Advice and Support
From specification to commissioning, our technical experts ensure your systems deliver maximum performance.
Links to the Engineering & Support page
Engineering and support
Technical product selection, network design, and thermal optimization to meet your system requirements.
Learn more
Links to the co-development page
Co-Development
Collaborative engineering partnerships to develop custom solutions tailored to your specifications.
Learn more
Links to the Installation Training page
Installation Training
Professional installation training options to ensure correct system deployment.
Learn more
Links to the Pipe Pre‑Insulation Service page
Pipe Pre‑Insulation Service
Meet your customers’ demand instantly with insulated pipes, without changing your production process.
Learn more
Sustainable insulation for efficient buildings
Watch videoWE ARE HERE FOR YOU
Frequently asked questions
How sustainable are Thermaflex solutions
Thermaflex is committed to genuine sustainability across our entire product portfolio. Our solutions achieve Cradle to Cradle® Certification, carry Environmental Product Declarations (EPDs) supporting LEED, BREEAM, and DGNB certifications. We’ve transitioned to renewable energy in our operations and are dedicated to net-zero emissions. Through circular economy principles, safe material formulations, and transparent lifecycle reporting, Thermaflex enables customers to build sustainably without compromising performance. Read more.
Does Thermaflex offer technical support
Yes. Our team provides comprehensive engineering support including system and network calculations, material selection guidance, compliance documentation, installation trainings and project support. Contact our team by email international@thermaflex.com, or explore more services here.
What applications are the insulation products suitable for
Thermaflex solutions serve various market sectors: HVAC/R systems, construction, district heating and cooling networks, drinking water distribution, marine/shipbuilding, equipment manufacturing, packaging, and other specialized applications including transport and industrial systems. Learn more about our applications here.
In how many countries is Thermaflex active
Thermaflex is a global company, headquartered in the Netherlands, with production facilities in the Netherlands, Poland, Turkey, and Thailand. We have sales offices across multiple continents including France, Germany, Austria, Denmark, and Asia, allowing us to serve customers globally. Find our internatioanl offices here.
Can Thermaflex insulation be customised
Yes. We offer two levels of customization: Factory Customization produces precision-engineered solutions including custom-dimensioned components, specialized fittings, and integrated assemblies; Co-Development partners your expertise with our R&D capabilities to create solutions for unique applications, specialized requirements, or OEM integration. Contact us to find out more.
