Polyurethane foam insulation spiral steel pipe manufacturers shape industry quality, open quality market
Release time:
2018-12-07
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Hebei Longdu Pipeline understands that polyurethane foam insulation spiral steel pipe manufacturers have shaped the quality of the industry, and the construction of prefabricated directly buried insulation pipe is more convenient and safer to open up the market with quality. What method can better play the role of prefabricated directly buried insulation pipe? Of course, it is easy to use and safe. Today, the small series will tell you. In addition to the high-temperature prefabricated directly buried insulation pipes produced outside China, there are leak alarm lines. Once the pipeline leaks somewhere, the transmission of the alarm line can show the accurate leakage of water and water leakage on special inspection instruments. The location and extent of the leak, so as to notify the inspectors to quickly deal with the leaking pipe section to ensure the safe operation of the heating network. Domestic insulation pipes are currently equipped with leakage alarm lines, and prefabricated directly buried insulation pipes need to fill this blank. High temperature prefabricated direct buried insulation pipe not only has advanced technology and practical performance, but also is difficult to compare with traditional trench and overhead laying pipeline. The high-temperature prefabricated directly buried insulation pipe is composed of steel pipe, glass fiber reinforced plastic inner sheath and glass fiber reinforced plastic shell. Its characteristics are: high-temperature resistant insulation layer, leakage alarm line: when manufacturing high-temperature prefabricated directly buried insulation pipe, the prefabricated directly buried insulation pipe is embedded with alarm line in the insulation layer close to the steel pipe. Once the pipeline leaks somewhere, through the alarm line transmission, it can alarm on the special detection instrument, and display the exact location of the leakage and the degree of leakage, so as to notify the maintenance personnel to quickly deal with the leaking pipe section and ensure the safe operation of the heating network. Lubrication layer, elastic seal. The utility model effectively solves the problems of insulation, sliding lubrication and waterproofing of the exposed pipe end of the prefabricated directly buried insulation pipe, and is suitable for high temperature heat transfer of 130 ℃ ~ 600 ℃ in urban central heating. Prefabricated direct buried insulation pipe also has significant social and economic benefits, but also a powerful measure of heating energy. The adoption of directly buried heating pipeline technology shows 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, the trench and overhead of the heating pipe must be directly replaced. With the expansion of the application scope of prefabricated directly buried insulation pipe, people begin to pay attention to how to use it more safely and conveniently. Now, if you remember the small plait, you can use prefabricated direct buried insulation pipes. In the construction process of prefabricated directly buried insulation pipe, the most difficult and most difficult problem is the construction of prefabricated directly buried insulation pipe. But many construction workers aren't sure how to handle the unexpected. Today, editor Rong Bangxiao takes on-site measures to deal with some problems that often occur on the construction site. 1. What are the methods for filling directly buried plastic casing steel prefabricated insulation pipes on site? The main function of the port is to closely connect the gap with the mother pipe to achieve the purpose of sealing and waterproofing. It is recommended to use the following two methods: 1, the diameter is less than 500mm, the sleeve filling method is convenient to operate and the cost is low; 2 the diameter is greater than 500mm, the electric heating sleeve filling port is used, although the cost is higher, but the engineering quality is more guaranteed. 2. How is the sleeve operated on site? The sleeve is usually determined according to the type of mother tube and the length of the mouth. Generally, the diameter of the sleeve is larger than the diameter of the mother tube and the length is about 20-30cm longer than the length of the mouth. For example, the length of a 180mm diameter insulating tube is 30cm, and the diameter of the sleeve is usually 190mm and the length is 50-60cm. Specific operation steps: 1 Before welding the steel pipe, put the casing into the pipe. After welding the steel pipe, slide the sleeve to the mouth. The balance is roughly the same at both ends. Both ends are sealed with heat shrinkable tape. 2 Open at one end of the sleeve. 30mm diameter injection hole and same end o
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