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    Home > Active Ingredient News > Drugs Articles > Application of polyurethane direct buried insulation pipe

    Application of polyurethane direct buried insulation pipe

    • Last Update: 2016-03-13
    • Source: Internet
    • Author: User
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    There are more than enough heat preservation and insulation for indoor and outdoor pipes of polyurethane direct buried heat preservation pipe in Shaoxing: thermal conductivity 0.03, polyethylene density 940, hydrophobic rate ≥ 90%, closure rate ≥ 90, compressive strength 230, relevant accessories: no accessories temporarily Shaoxing polyurethane direct buried heat preservation pipe is used for heat preservation and cold preservation of various indoor and outdoor pipes, central heating pipes, central air conditioning pipes, chemical, pharmaceutical and other industrial pipes The polyurethane direct buried insulation pipe has been developing rapidly as an excellent thermal insulation material since the birth of polyurethane synthetic material in 1930s, and its application scope is more and more extensive It is also widely used in various heating, refrigeration, oil transportation, steam transportation and other pipelines due to its simple construction and remarkable energy-saving and anti-corrosion effect It is widely used in all kinds of heating, refrigeration, oil transportation, steam transportation and other pipelines 1 Polyurethane directly buried heat preservation pipe has good heat preservation performance, and the heat loss is only 25% of the traditional pipe, which can significantly reduce the cost and save energy 2 Excellent waterproof function, excellent acid, alkali and corrosion resistance 3 Long service life, up to 30-50 years 4 The pipe diameter can be large or small, from DN15 to DN600; the insulation thickness can be thick or thin, from 15 to 500mm 5 It is widely used in heating pipes, refrigeration pipes, chemical pipes, industrial pipes, etc the classification of direct buried polyurethane insulation pipes is very complex Generally, there are several ways according to people's habits According to the design and customer's requirements, seamless pipe (gb8163-87) shall be selected for DN200 and spiral welded pipe (gb9711-88; SY / t5038-92) and straight welded pipe (gb3092-93) shall be selected for DN200 and above After the surface of the steel pipe is treated by the advanced shot blasting process, the rust removal grade of the steel pipe can reach the SA2 grade in gb8923-1988 standard, and the surface roughness can reach the r = 12.5 μ m in gb6060.5-88 standard According to the temperature of the conveying medium, it can be divided into: normal temperature polyurethane direct buried insulation pipe, high temperature polyurethane direct buried insulation pipe, deep cold polyurethane direct buried insulation pipe; 2 According to the difference of the external protective layer, it can be divided into: FRP external protective layer polyurethane direct buried insulation pipe, high-density polyethylene external protective layer polyurethane direct buried insulation pipe, steel external protective layer polyurethane direct buried insulation pipe and other external protective layer direct buried insulation pipe Temperature pipe; 3 according to the different transport medium, there are many kinds: such as polyurethane directly buried insulation pipe for water supply, high temperature polyurethane insulation pipe, steam used for steam, directly buried polyurethane composite prefabricated insulation pipe, buried rigid polyurethane foam anticorrosive heat pipe for oil and so on There are many other names such as polyurethane buried pipe, polyurethane prefabricated pipe, polyurethane direct buried prefabricated pipe, polyurethane jacket pipe, polyurethane foam insulation pipe and so on.
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