Market analysis of the hottest polyurethane foam i

2022-08-24
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Market analysis of polyurethane foam insulation pipe

current price of polyurethane foam insulation pipe = index prefabricated polyurethane directly buried insulation pipe not only has advanced technology and practical performance that traditional trench and overhead laying pipeline are difficult to compare, but also has significant social and economic benefits, and is also a powerful measure of heating and energy saving. The adoption of directly buried heating pipeline technology marks that the development of heating pipeline technology in China has entered a new starting point

polyurethane products have excellent characteristics such as light capacity, high strength, heat insulation, sound insulation, flame retardancy, cold resistance, corrosion prevention, non water absorption, simple and fast construction, and have become indispensable materials for heat insulation, waterproof and sealing in industrial departments such as construction, transportation, petroleum, chemical industry, electric power, refrigeration, etc. Polyurethane rigid foam plastic tile (pipe): used for insulation and cold insulation of various indoor and outdoor pipelines, central air conditioning pipelines, chemical, pharmaceutical and other industrial pipelines. Polyurethane rigid foam directly buried pipes are used for central heating pipelines, various refrigeration and industrial pipelines. Strong polyurethane insulation pipe polyurethane insulation pipe has become a trend to replace traditional building insulation materials. At present, the implementation of relevant policies promoted by the state has further affirmed the strong market of polyurethane pipe insulation. According to the data, in the energy-saving plan formulated by the Ministry of construction and other ministries and commissions, six cities including Beijing are forced to save 65% energy on new buildings. At the same time, the Ministry of construction has also put forward new requirements for real estate developers, Namely, the external wall insulation is guaranteed for 5 years, which urges developers to use qualified insulation materials. These policies make the polyurethane insulation pipe industry face a promising future. Green, environmental protection, science and technology, and energy conservation are the goals of the future development of the construction industry. With the demand of the exterior wall insulation Market for polyurethane insulation pipes, enterprises are more standardized in product quality, and strive to make breakthroughs in technology, brand, sales channels, etc., so that polyurethane insulation pipes play a greater positive role in the construction field. It can be seen that polyurethane has played a great role in promoting our life and production. It is popular for its excellent performance, convenient construction and long service life. Its structure is: external protective layer, thermal insulation layer and anti leakage layer. The material of the external protective layer is polyethylene or FRP or other materials. The laying methods include direct burial, overhead and trench. Our company has accumulated a lot of rich experience in the construction of polyurethane insulation and heat insulation of pipe body for a long time, and its quality has reached national and international standards, which is deeply trusted and praised by our customers

market analysis of polyurethane foam insulation pipe

directly buried insulation pipe has good mechanical and thermal insulation properties. Generally, it can withstand high temperature of 120 ℃, and it can withstand high temperature of 180 ℃ through modification or combination with other insulation materials. It is suitable for insulation projects of various cold and hot water high and low temperature pipelines

directly buried insulation pipe has very prominent advantages:

1. Polyurethane directly buried insulation pipe has good insulation performance, and the heat loss is only 25% of the traditional pipe. Long term operation can save a lot of energy and significantly reduce the energy cost

2. It has strong waterproof and corrosion resistance. It does not need to attach a pipe trench, and can be directly buried in the ground or water. The construction is simple and rapid, and the comprehensive cost is low

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

4. The service life can reach years. The correct installation and use can make the maintenance cost of the pipe very low

5. The alarm system can be set to automatically detect the pipe leakage fault, accurately indicate the fault location and automatically alarm

6. The service life can reach years. Pipe diameter: dn15--dn600, purpose: central heating pipeline, refrigeration pipeline, industrial pipeline, etc

7. Oxygen index: ≥ 27 density: 40--70kg/cubic m hydrophobicity: 0.03kg/cubic cm thermal conductivity: 0.022kcal/m.h. ℃ and then annealed

directly buried insulation pipe has become a relatively mature advanced technology in some developed countries abroad. In recent ten years, the domestic heating engineering technicians are promoting the development of domestic pipe laying technology to a higher level by digesting and absorbing this advanced technology. The practice results over the past ten years have fully proved that the laying method of polyurethane insulation directly buried pipe has many advantages compared with the traditional trench and overhead laying. This is also the internal driving force for the rapid development of polyurethane insulation directly buried pipes in China's heating projects

polyurethane insulation pipe

overview: Prefabricated polyurethane directly buried insulation pipe is mainly composed of four parts

1 working steel pipe: according to the technical requirements of the transmission medium, seamed steel pipe, seamless steel pipe and double-sided submerged arc spiral welded steel pipe are used respectively

2 insulation layer: rigid polyurethane foam is used

3 protective shell: there are some points that need to be paid attention to in the process of using the high-density polymer change experimental machine

4 leakage alarm line: when manufacturing prefabricated polyurethane directly buried insulation pipe, an alarm line is buried in the insulation layer close to the steel pipe. Once a leakage occurs somewhere in the pipe, through the conduction of the alarm line, it can alarm on the special detection instrument and display the exact location and degree of leakage, so as to inform the maintenance personnel to deal with the leaking pipe section quickly and ensure the safe operation of heat

performance: the prefabricated polyurethane directly buried insulation pipe has good mechanical performance and thermal insulation performance. Generally, it can withstand 120 ℃ high temperature. Through modification or combination with other insulation materials, it can withstand 180 ℃ high temperature. It is suitable for the insulation engineering of all kinds of cold and hot water high and low temperature pipelines

advantages:

1. Reduce the project cost

according to the calculation of relevant departments, the double pipe heating pipeline can generally reduce the project cost by about 25% (using FRP as the protective layer) and 10% (using high-density polyethylene as the protective layer)

2 low heat loss and energy saving

the thermal conductivity of prefabricated polyurethane directly buried insulation pipe is: λ= 0.013-0.03kcal/m · h · OC, which is much lower than other commonly used pipe insulation materials in the past, and the insulation effect is improved by 4-9 times. Moreover, due to its good initial mechanical properties, the water absorption is very low, about 0.2kg/m2. The reason for the low water absorption is that the closed cell rate of polyurethane foam is as high as 92%. Low thermal conductivity and low water absorption, plus insulation layer and high-density polyethylene or glass fiber reinforced plastic protective shell with good waterproof performance outside, It changes the traditional "wearing wet cotton padded jacket" of laying heat supply pipelines in trenches "The overall heat loss of the heat supply pipeline is greatly reduced, with a heat loss of 2%, which is less than the international standard requirement of 10%. 3. Corrosion prevention, good insulation performance and long service life.

prefabricated polyurethane directly buried insulation pipe can play a good anti-corrosion role because the polyurethane hard foam insulation layer is closely bonded to the steel pipe skin, isolating the infiltration of air and water. At the same time, its foam holes are closed, and its water absorption is very small. High density polyethylene shell and glass fiber reinforced plastic shell have good anti-corrosion, insulation and mechanical properties. Therefore, the production efficiency is improved, and the outer skin of the working steel pipe is hard to be eroded by the outside air and water. As long as the internal water quality of the pipeline is treated well, according to foreign data, the service life of prefabricated polyurethane directly buried insulation pipe can reach more than 50 years, which is 3-4 times longer than that of traditional trench laying and overhead laying

4. small land occupation, fast construction, conducive to environmental protection and reduce construction disturbance

directly buried heating pipelines do not need to build huge trenches, but only need to bury the insulation pipes underground, which greatly reduces the land occupation of the project, reduces the amount of earth excavation by more than 50%, and reduces the amount of civil masonry and concrete by 90%. At the same time, the processing of insulation pipes and field trenching are carried out in parallel, and only field joints are needed, which can greatly shorten the construction period. As the transportation of bricks, cement, sand and gravel, and surplus soil is reduced, the vehicle exhaust emissions, dust emissions, and noise emissions during the construction process are reduced, thereby protecting the environment

5. Safety

at present, prefabricated polyurethane directly buried insulation pipes produced outside China are equipped with leakage alarm lines. Once a leakage occurs somewhere in the pipeline, through the conduction of the alarm line, the exact location and degree of leakage of the insulation pipeline can be displayed on the special detection instrument, so as to inform the leakage inspectors to deal with the leaking pipe section quickly and ensure the safe operation of the heating pipe. At present, there is no leakage alarm line for domestically produced insulation pipes, which needs to be filled in

summary: in a word, the prefabricated polyurethane directly buried insulation pipe not only has the advanced technology and practical performance that the traditional trench and overhead laying pipeline are difficult to compare, but also has significant social and economic benefits. It is also a powerful measure for heating and energy saving. The adoption of directly buried heating pipeline technology marks that the development of heating pipeline technology in China has entered a new starting point. With the further improvement and development of this advanced technology, it is imperative to directly bury the heating pipeline instead of the trench and overhead

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