Polyurethane directly buried insulation pipe manufacturing industry is developing rapidly in China
Release time:
2018-12-07
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In the past ten years, the direct burial of polyurethane directly buried insulation pipe has developed rapidly in China and has become the main laying method of heating pipe network. The direct burial of the so-called polyurethane directly buried insulation pipe is to directly bury the polyurethane directly buried insulation pipe in the soil without laying pipes in the building trench. Compared with trench laying, directly buried polyurethane insulation pipe has the following advantages: 1. There is no need to build trenches, and the number of earthwork and civil engineering is very small; pipeline prefabrication, small on-site installation, and fast construction progress can save heating The investment cost of the pipe network. 2. Small footprint, easy to coordinate with other underground pipelines and facilities. When the old city, narrow streets, dense underground pipes, this advantage is more obvious. 3. The polyurethane directly buried insulation pipe is tight, it is difficult to penetrate between the water retaining material and the steel pipe, and the pipe is not easy to corrode. According to foreign materials, it is believed that the service life can be guaranteed for more than 50 years, which is much higher than the groove. 4. As a heat insulation material, the thermal conductivity of polyurethane is small, the heat loss of the heating tube is less than the heat loss of the groove, and the heat transfer efficiency is high. 5. The polyurethane directly buried insulation pipe has a simple structure and is prefabricated in the factory, which is convenient to ensure the quality of the project. It is precisely because of the above reasons that the manufacturing industry of polyurethane directly buried insulation pipe is developing rapidly in China, and there is still more room for development in the future. During the "Twelfth Five-Year Plan" period, the compound annual demand growth rate of directly buried insulation pipes is expected to exceed 60%. China's external wall insulation market demand will explode in the next three years, or the global MDI industry operating rate increased to 83%. Directly buried insulation pipe material has excellent thermal insulation, water absorption resistance, tensile strength and compression resistance. We expect that the proportion of directly buried insulation pipes in insulation materials will increase from 10% in 2011 to 36% in 2015. The compound annual growth rate is expected to exceed 60%. From 2011 to 2015, the external wall insulation market is expected to bring about 500000 tons of MDI new demand (2011 - 2015 demand is 3,5,8,13,210,000 tons respectively). The outbreak of demand in China's external wall insulation market will accelerate the operating rate of the global MDI industry in the next three years. It is expected that the global industrial operating rate will increase from the current 74% to 83% by 2015, and the upward trend of the industry will be strengthened. We believe that the exterior wall insulation industry will usher in an excellent development opportunity. It is expected that the directly buried insulation pipe will resume explosive growth, and the compound annual growth rate of demand will exceed 60%.
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