Pre-Insulated Pipe System

ASTM E-84 Class I Version, Fire retardant

POLY-THERM is a pre-insulated pipe system fabricated with tough fiberglass reinforced (FRP) outer jacket and void-free polyisocyanurate (PIR) foam insulation.  POLY-THERM’s FRP jacket provides a seamless waterproof jacket protecting against corrosion under insulation while delivering maximum thermal efficiency and optimum performance from DHC and thermal distribution systems to the most demanding applications, such as cryogenic, LNG, and LPG.

For projects requiring ASTM E-84 Class 1 requirements, POLY-THERM® offers a non-flammable outer jacket material to meet fire retardancy (flame & smoke) performance.

The outer jacket’s standard color is available in white or black.  Also, available in any color; ask PERMA-PIPE for more information.



Operating Temperature Range

-320 °F (-196 °C) to 250 °F (121 °C)

PUF / PUR density 2 lbs/ft3 to 15 lbs/ft3 (nominal)
​                          32 kg/m3 to 240 kg/m3


For specific temperature requirements, please contact us at askpermapipe@permapipe.com


Pipe Size

PERMA-PIPE can process a wide variety of pipe lengths, weights, and diameters, which can also be altered if required.  Please contact PERMA-PIPE to find the best facility to meet the needs of your project and for any specific questions about pipe size that can be accommodated.


Complies With

CSA         en253


Additional Certifications