Pre insulated pipe is a common pipeline insulation material, widely used in various fields and industries. Here are some specific applications of polyurethane insulation pipes:

1. Urban central heating pipeline: In urban central heating systems, pre insulated pipes can be used for insulation of pipelines conveying high-temperature hot water or steam to reduce heat loss and save energy.

2. Industrial pipelines: In industrial production processes, many pipelines need to transport high-temperature or low-temperature cooling media. Polyurethane insulation pipes can effectively control the surface temperature of pipelines, reduce heat loss, and protect pipelines.

3. HVAC pipes: In buildings, polyurethane insulation pipes can be used for pipeline insulation in HVAC systems to ensure stable and comfortable indoor temperatures.

4. Petrochemical industry: In the petrochemical production process, polyurethane insulation pipes can be used for pipeline insulation for conveying high-temperature or low-temperature cooling media to ensure production efficiency and safety.

5. Water supply and drainage pipelines: In urban water supply and drainage systems, polyurethane insulation pipes can be used for insulation of water and sewage pipelines to prevent icing and reduce heat loss.