Lambda Values

The average lambda values for different types of LOGSTOR pre-insulated pipes are presented below. These lambda values are used for calculations of heat loss from LOGSTOR pipe systems.

Type of pipe

Straight pipe, axial conti production

Straight pipe, traditional production

Straight pipe, spiral conti production



PUR insulation in foamed casing joints

PUR insulation shells for casing joints


Actual lambda value

0,023 W/mK

0,027 W/mK

0,025 W/mK

0,022 W/mK

0,027 W/mK

0,028 W/mK

0,036 W/mK  – after 30 years​' aging