The thermal insulation pipe is suitable for various media within the range of -50 ° C-150 ° C. It is widely used in the presence of central heating, cooling and thermal oil transportation, cold storage, coal mines, petroleum, chemical and other industries Essence
The insulation pipe is tightly bonded to the outer skin of the steel pipe because the polyurethane hard foam warming layer is isolated from the infiltration of air and water, which can play a good anti -corrosion effect. High -density polyethylene shells and glass fiber reinforcement shells have good anti -corrosion, insulation and mechanical functions. At the same time, its foam is closed, and the water absorption is small. Therefore, it is difficult to be difficult to corrode outside air and water.
The service life of the thermal insulation pipe can reach more than 50 years, which is 3 to 4 times higher than the traditional ditch layout and the setting of strikes. It is much lower than other commonly used thermal insulation pipeline materials, and the thermal insulation effect has improved 4-9 times. There is a low water absorption rate, about 0.2kg/m2. The reason for the low water absorption rate is that the closed cuffs of polyurethane foam are about 92%.
The insulation pipe does not require a huge trench. It only needs to buried the insulation pipe underground, so it greatly reduces the project occupation of the project, reduce the amount of earthquake excavation by about 50%, and reduce the amount of civil masonry and concrete by 90%. At the same time, the thermal insulation pipe processing and the on -site ditch are carried out parallel. As long as the on -site connection is required, it can shorten about 50%of the construction period.
It is much lower than other commonly used thermal insulation pipeline materials, and the thermal insulation effect is increased by 4 to 9 times. There is a low water absorption rate, about 0.2kg/m2. The reason for the low water absorption rate is that the closing rate of polyurethane foam is about 92%. Low thermal heating coefficient and low water absorption rate, coupled with high -density polyethylene or glass fiber reinforcement shells with good thermal insulation and waterproof performance, which changed the situation of "wearing a wet cotton jacket" for the traditional ground groove heating pipe, which greatly reduced the heating pipeline The overall thermal loss, the heat net heat loss is 2%, less than 10%of the international standard requirements.
Anti -corrosion and insulation performance, long service life.
Because the polyurethane hard foam insulation layer is tightly bonded on the steel pipe outer skin, which isolates the infiltration of air and water, it can play a good anti -corrosion effect. At the same time, its foam is closed, and the water absorption is small. High -density polyethylene shells and glass fiber reinforcement shells have good anti -corrosion, insulation and mechanical properties. Therefore, the outer skin of the working steel pipe is difficult to erode with external air and water. As long as the water quality inside the pipeline is well treated, according to foreign data, the service life of the high -temperature prefabricated insulation pipe can reach more than 50 years, which is 3 to 4 times higher than the traditional ditch layout and overhead labeling.
