1. Definition of polyurethane prefabricated directly buried insulation pipe.
Polyurethane prefabricated directly buried insulation pipe refers to a kind of insulation pipe material processed and made in the factory, which can be directly installed and used on the construction site. The main feature of this pipe material is the use of polyurethane foam as the insulation material, and the outer layer is made of FRP as the protective layer, which has the characteristics of good thermal insulation, heat insulation, and corrosion resistance.
2. Specifications and models of polyurethane prefabricated directly buried insulation pipes.
The specifications and models of polyurethane prefabricated direct-buried insulation pipes are selected according to the use occasions and actual needs. Commonly used specifications and models are DN80, DN100, DN125, DN150, DN200 and other different sizes of pipes, where DN represents the nominal diameter of the pipe, and the unit is millimeters. Different specifications and models of pipes are different in terms of diameter, wall thickness, number of insulation layers, service temperature, etc.
3. Application range of different specifications and models.
1) DN80 and DN100 polyurethane prefabricated directly buried insulation pipes are suitable for thermal pipelines, cooling water pipelines, hot water pipelines and other applications. Due to the relatively small diameter of these two types of pipes, they are generally used for pipe insulation in small buildings.
2) The polyurethane prefabricated directly buried insulation pipes of DN125 and DN150 are suitable for the insulation of medium-sized buildings or underground pipe networks. These two sizes of pipes can guarantee excellent insulation performance when applied.
3) DN200 polyurethane prefabricated directly buried insulation pipe is suitable for the insulation of large buildings, industrial equipment, pipelines and other huge projects. Due to its large diameter, it can withstand greater pressure and temperature, and is very suitable for use in high-temperature and high-pressure environments.
Features of polyurethane prefabricated direct buried insulation pipe:
1. Excellent thermal insulation performance.
Polyurethane prefabricated directly buried insulation pipe has good thermal insulation performance, which can meet the thermal insulation requirements of industrial buildings, urban heating pipe networks and other fields. Compared with traditional mineral wool, aluminum silicate and other insulation materials, the thermal conductivity of polyurethane prefabricated directly buried insulation pipe is smaller and the insulation effect is better.
2. Excellent corrosion resistance.
The surface of the polyurethane prefabricated directly buried insulation pipe has undergone special anti-corrosion treatment, which has excellent corrosion resistance, and can be used for a long time in corrosive environments such as acid, alkali, salt, etc., and has a long service life.
3. Sanitation and environmental protection.
Polyurethane prefabricated direct-buried insulation pipes are made of environmentally friendly materials, which will not cause pollution to the human body and the environment, and meet the requirements of hygiene and environmental protection.
4. Simple construction.
The polyurethane prefabricated direct-buried insulation pipe completes the process of thermal insulation and anti-corrosion when it is made, which avoids the trouble of on-site construction, reduces the difficulty and time of construction, and shortens the construction period.
5. Easy to transport and install.
Polyurethane prefabricated direct buried insulation pipes are made in a modular form, which is easy to transport and install. When installed on site, only simple splicing and fixing are required, and the operation is very simple, reducing the cost of manpower and material resources.