Insulated steel pipes, also known as heat preservation pipes, are steel pipes that have been processed through a thermal insulation technique. They ensure that the inner temperature of the working pipe meets or achieves the required temperature, in various working environments and under the influence of external media.

Insulated pipelines are widely used in the transportation networks for liquids and gases, in projects such as petrochemical pipeline insulation, central heating networks, central air conditioning ventilation pipelines, and municipal engineering.