Large-scale polyurethane insulating pipe consumer company uses imported high-pressure complete sets of polyurethane foaming equipment to consume the three-in-one direct-buried insulating pipe with excellent overall performance, strict implementation of steel pipe surface rust removal and external corona treatment process, further improving the bonding performance of insulating pipe. The insulation layer material is rigid polyurethane foam with a density of 60kg/m3 to 80kg/m3, which fully filled the gap between the steel pipe and the casing, and has certain bonding strength, so that the steel pipe, the outer sleeve pipe and the insulation layer can form a solid whole between the three. Polyurethane foam has good mechanical properties and thermal insulation properties. Under normal conditions, it can withstand temperatures of 120 degrees Celsius. After modification or combination with other thermal insulation materials, polyurethane foam can withstand temperatures of 180 degrees Celsius. Direct-buried prefabricated insulating pipes have outstanding advantages over traditional insulating pipes.

1. Good thermal insulation performance, heat loss is only 25% of the traditional pipe, long-term operation can save a lot of energy, significantly reduce energy costs.

2. It has strong ability of waterproofing and corrosion resistance. It can be directly buried in open or water without installing pipe trenches. The construction is tedious and fast, and the comprehensive cost is low.

3. It also has good corrosion resistance and impact resistance at low temperature, and can be directly buried in open frozen soil.

4. The service life can reach 30-50 years. Correct installation and operation can make the maintenance cost of the pipeline network very low.

5. An alarm system can be set up to automatically detect the leakage of the pipeline network, accurately indicate the location of the fault and automatically alarm.

Polyurethane directly buried foam insulation tube - polyurethane foam insulation tube foam has good mechanical properties and insulation polyurethane insulation pipe application: polyurethane insulation pipe for indoor and outdoor pipes, central heating pipes, central air-conditioning pipe, chemical industry, and other industrial pipeline insulation and cold insulation works. This paper summarizes that polyurethane foamed insulation pipe has been developed rapidly as an excellent thermal insulation material since the birth of polyurethane synthetic data in the 1930s, and its application scope is becoming more and more widespread. It is also widely used in various heating, refrigeration, oil transportation and steam transportation because of its cumbersome construction and remarkable energy-saving and anticorrosive effect. All kinds of pipelines. It is widely used in various heating, refrigeration, oil and steam pipelines.

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