Insulation mainly used in urban water supply networks, irrigation to sprinkler irrigation diversion works and agricultural projects. Because the pipeline connected by a hot melt, fused connection, to achieve the integration of the interface and pipe insulation, and can effectively resist the impact stress has been generated pressure and stress in the axial direction. And the production process does not add heavy metal salt stabilizer urban heating prefabricated buried steam pipe insulation, non-toxic material, no scaling, no bacteria heating pipe insulation, to avoid secondary contamination of drinking water. Prefabricated buried pipe insulation that is buried in the wall or in advance of one underground pipe insulation, it is different from other high-density polyethylene pipes practical prefabricated buried pipe insulation, buried it in the first place is not input use, but to put to use later in special circumstances, such as some lines when housing construction is not turned on, it can be turned on later by prefabricated buried pipe insulation, which is a kind of wisdom of building designers expression, while the development of the construction industry also obtained experience accumulated.