EN 253 PIPE

PREMANT is the protected name for a pre-insulated steel pipe system used to transport district
heat. It is a pipe system for direct installation in the ground, without channels. The system has
proven its excellence over several decades and is now recognized as the industry standard for
normal cases.

Depending on the purpose of use, PREMANT district heating pipe has a medium pipe made of
steel, either welded, seamless or galvanized, or made of stainless steel. This makes PREMANT
district heating pipe suitable to transport heating water, domestic hot water, water/glycol mixture,
condensates and other fluids, but not for steam. (with observation of the temperature)
Heat insulation for PREMANT district heating pipe is performed by a rigid polyurethane foam
which can withstand temperatures of up to 144 °C. PE-HD casing pipe provides external protection.
All three components form one fixed unit, so this pipe system is a member of the composite
pipe family.

Range of applications
Max. temperature for continuous operation
TBmax: 144 °C (160 °C)
Max. permitted operating pressure p: 25 bar