High temperature prefabricated directly buried insulation pipe is a kind of directly buried prefabricated insulation pipe with good thermal insulation performance, safe and reliable, and low engineering cost. It can effectively deal with the heat preservation, sliding smoothness and waterproof of exposed pipe end of prefabricated directly buried insulation pipe for urban central heating at medium and high temperature. High temperature prefabricated directly buried insulation pipe not only has the advanced technology and practical performance that traditional trench and overhead laying pipeline are difficult to compare, but also has significant social and economic benefits, which is also a powerful measure of heating energy saving.

The technology of directly buried heat supply pipeline is adopted for high temperature prefabricated directly buried thermal insulation pipe, which indicates that the development of heat supply pipeline technology has entered a new starting point. Polyurethane directly buried insulation pipe is widely used in liquid and gas transmission network, chemical pipeline insulation engineering, petroleum, chemical, central heating network, air conditioning and ventilation pipeline, municipal engineering, etc. High temperature prefabricated directly buried insulation pipe is a kind of directly buried prefabricated insulation pipe with good thermal insulation performance, safety and reliability, and low engineering cost. It can effectively solve the problems of heat preservation, sliding lubrication and pipe end waterproof of prefabricated directly buried insulation pipe for 130 ℃ - 600 ℃ high temperature heat transmission in urban central heating.

Therefore, the land occupation of the project is greatly reduced, which is conducive to environmental protection, the amount of earthwork excavation is reduced by more than 50%, and the amount of civil masonry and concrete is reduced by 90%. At the same time, the insulation pipe construction and field trenching are carried out in parallel, and the construction period can be shortened by more than 50% with only on-site joint. The heat loss is only 25% of that of the traditional pipe material. The long-term operation can save a lot of energy and significantly reduce the energy cost. It has strong waterproof and corrosion resistance, and can be directly buried in the ground or water without pipe trench. The construction is simple and rapid, and the comprehensive cost is low. It also has good corrosion resistance and impact resistance at low temperature, and can be directly buried in the underground frozen soil.

The service life can reach 30-50 years. Correct installation and use can make the maintenance cost of pipe network extremely low. Alarm system can be set to automatically detect the leakage fault of pipe network, accurately indicate the fault location and alarm automatically. Directly buried prefabricated thermal insulation pipe is also called steel jacket steel insulation steel pipe. Because of the temperature resistance of ultra-fine glass wool, steel sleeve steel insulation steel pipe is mainly used for steam heating and insulation. The glass wool used in steel sleeve steel glass wool insulation steel pipe is unique centrifugal technology.