Polyurethane-insulated steel pipes have excellent mechanical and thermal insulation properties.
Release time:
2020-07-20
Polyurethane insulated steel pipes boast outstanding features such as high-efficiency thermal insulation, waterproofing, corrosion resistance, heat insulation, soundproofing, flame retardancy, cold resistance, anti-corrosion properties, light weight, high strength, easy and quick installation, and resistance to plant root penetration. They have become indispensable materials for thermal insulation, waterproofing and leak-sealing, and sealing applications in various industrial sectors including construction, transportation, petroleum, chemical engineering, power generation, and refrigeration.
Introduction to Polyurethane Insulated Steel Pipes:
1. Anti-corrosion coating: Protects the outer steel pipe from corrosion by corrosive substances, thereby extending the service life of the steel pipe.
2. Outer protective steel pipe: Protects the insulation layer from groundwater erosion, supports the working pipe, and can withstand certain external loads, ensuring the normal operation of the working pipe.
3. Polyurethane foam layer: Ensures the medium temperature and keeps the outer protective pipe surface at a constant temperature.
4. Barrier and Reflective Layer: Ensures that the organic foam material does not penetrate into the inorganic, rigid, high-temperature-resistant layer; reflects part of the heat from the high-temperature-resistant layer.
5. Inorganic rigid insulation layer: Resistant to high temperatures, ensuring the interface temperature between it and the organic insulation layer, and preventing the foam from carbonizing.
6. Drag-reducing layer: Ensures the thermal expansion and contraction movement of the working steel pipe.
7. Working steel pipe: Ensures the normal flow of the conveyed medium.
Polyurethane insulated steel pipes boast outstanding features such as high-efficiency thermal insulation, waterproofing, corrosion resistance, heat insulation, soundproofing, flame retardancy, cold resistance, anti-corrosion properties, light weight, high strength, easy and quick installation, and resistance to plant root penetration. As a result, they have become indispensable materials for thermal insulation, waterproofing and leak-sealing, and sealing applications in various industrial sectors including construction, transportation, petroleum, chemical engineering, power generation, and refrigeration. Polyurethane insulated steel pipes are used for thermal insulation and cold preservation in a wide range of indoor and outdoor pipelines, district heating pipelines, central air-conditioning pipelines, industrial pipelines in the chemical industry, oil pipelines, and steam pipelines. When installed directly buried within permafrost layers ranging from 0.6 to 1.2 meters deep, polyurethane insulated steel pipes can reduce heat loss by more than 40% compared to conventional pipelines. Moreover, their service life is three to five times longer than that of other thermal insulation and anti-corrosion materials, with a projected lifespan of 30 to 50 years.
Polyurethane-insulated steel pipes possess excellent mechanical and thermal insulation properties. Under normal conditions, they can withstand temperatures up to 120℃; by means of modification or combination with other insulating materials, they can withstand temperatures up to 180℃.
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