Insulation pipe performance index

The high temperature prefabricated directly buried insulation pipe is mainly composed of four parts.

1. Operating steel pipes: According to the technical requirements of conveying media, seamless steel pipes, double-sided submerged arc spiral welded steel pipes are selected.

2. insulation: rigid polyurethane foam.

3. maintenance shell: use high-density polyethylene or FRP.

4. Leakage alarm line: When manufacturing high-temperature prefabricated directly buried insulation pipe, an alarm line is embedded in the insulation layer near the steel pipe. Once leakage occurs somewhere in the pipeline and is transmitted by the alarm line, it can alarm on the special detection instrument and show the precise direction of leakage and the magnitude of leakage, so as to notify the maintenance personnel quickly. Treatment of leaking pipes ensures the safe operation of heat supply network.

The insulation pipe is tightly adhered to the outer skin of the steel pipe because of the rigid polyurethane foam insulation layer, and the air and water entry can be isolated. Its foaming hole is closed and its water absorbency is very small. The HDPE housing and FRP shell have excellent anticorrosive, insulation and mechanical properties. Therefore, the outer skin of the steel pipe is difficult to be eroded by external air and water. According to foreign materials, the service life of high-temperature prefabricated direct-buried insulation pipe can reach more than 50 years, which is 3-4 times longer than that of traditional trench laying and overhead laying.

5. less land occupation, faster construction and better environmental protection.

Directly buried heating pipelines do not need to build huge trenches. They only need to bury thermal insulation pipelines underground, which greatly reduces the construction area, reduces the amount of earthwork excavation by more than 50%, and reduces the amount of civil masonry and concrete by 90%. Together, the heat preservation pipe processing and site trenching are carried out in parallel, only the site joints are needed, which can shorten the construction period by more than 50%.

This article is organized by Shandong Hipper Pipe Technology Development Co., Ltd. https://www.sdhpgy.com. We will provide you with new knowledge of Jinan insulation pipe. Interested friends can pay attention to us. Thank you!