One. Pre-fabricated polyurethane insulated pipes are mainly composed of four parts.

(1) Working钢管: Seamless steel pipes, ERW steel pipes, and double-sided buried arc spiral-welded steel pipes are used respectively based on the technical requirements of the conveyed medium.

(2) Insulation: rigid polyurethane foam plastic used.

(3) Protective Shell: Made of high-density polyethylene or glass fiber reinforced plastic.

(4) Leak Alarm Line: During the manufacturing of high-temperature pre-fabricated buried insulation pipes, an alarm line is embedded in the insulation layer adjacent to the steel pipe. Should a leak occur at any point in the pipeline, the alarm line transmits the signal, triggering an alarm on a dedicated detection instrument and displaying the exact location and severity of the leak. This enables the prompt notification of maintenance personnel to quickly address the leaking section and ensure the safe operation of the heating network.

II. Features

1. Reduce construction costs.

Low thermal loss, energy-saving.

Corrosion-resistant, excellent insulation properties, and long service life.

4 Low land occupation, fast construction, and environmental protection benefits.

5. Safety.