One. The pre-insulated polyurethane pipe is mainly composed of four parts.

(1) Working Steel Pipe: Seamless steel pipes, ERW steel pipes, and double-sided buried arc spiral焊接 steel pipes are used according to the technical requirements of the conveyed medium.

(2) Insulation: Hard polyurethane foam plastic used.

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

(4) Leak Alarm Line: During the manufacturing of high-temperature pre-fabricated buried thermal insulation pipes, an alarm line is embedded in the insulation layer adjacent to the steel pipe. Should a leak occur at any point along the pipeline, the alarm line transmits the signal, triggering an alert on a dedicated detection instrument. This instrument then displays the precise location and magnitude of the leak, enabling maintenance personnel to swiftly address the leaking section and ensure the safe operation of the heating network.

Section II: Features

Reduce construction costs.

Low thermal loss, energy-saving.

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

Little land occupation, fast construction, and favorable for environmental protection.

5. Safety.