Finnpipe
Finnpipe is a brand of underground district heating pipes manufactured in Finland. These pre-insulated pipes are designed for efficient and reliable distribution of heat in urban and industrial areas. The core of a Finnpipe system consists of a steel service pipe that carries the hot water, surrounded by a layer of polyurethane foam insulation. This insulation is then encased in a protective outer jacket, typically made of high-density polyethylene (HDPE), which shields the system from external damage and moisture.
The design of Finnpipe emphasizes minimal heat loss, contributing to energy efficiency in district heating networks.