Buried high temperature pipe insulation, pipe insulation steel jacket steam steel casing (steel jacket) buried steam pipe insulation embedded technology is a new technology embedded waterproof, leakproof, impermeability, compression and fully enclosed, straight Buried laying of a major breakthrough technology for use in high water table areas. It is a combination of the transmission medium pipe, steel pipe anti-corrosion coat and superfine wool padding between the pipe and the jacket is made of steel, but also can be graphite, calcium silicon tile shell filled with polyurethane foam and composite. I. Introduction Buried steel jacket pipe insulation from the pipe work, insulation, rolling guide pipe bracket, outer tube (pipe), corrosion layers, insulation material strapped to the pipe work, relying on the rolling guide tube holder within the outer casing as a whole thermal expansion move, it does not damage the insulation, mounting bracket for the built-in mounting bracket, no original "three-way fixation" huge reinforced concrete buttresses, is the ideal steam pipe laying. After years of use in practice and related testing center life of up to three years or more. Second, the product scope of the transmission medium: Steam working pressure: ≤1.6MPa Medium temperature: ≤350 ℃ Work environment: underground soil Third, the product structure diagram 1, the core tube (pipe) 2, hydrophobic XN-3 silicate insulation shell (or hydrophobic compound silicate insulation shell or non-asbestos calcium silicate insulation shell) 3, rolling guide pipe bracket 4, tied with a pipe 5, the outer protective tube (steel tube) 6, coating Fourth, the product materials technology requirements 1, the working material for the steel pipe transmission fluid with seamless steel pipe, adopt GB8163-99 standards, or the use of standard GB3087, also in response to customer requirements or other standards adopted, as the availability of steel. 2, insulation insulation materials used hydrophobic composite silicate shell or XN-3 aluminum (moisture ceramics) insulation shell, can also choose other materials upon request of insulation materials. Insulation Materials wrong side Staggered tying double in the working pipe fused, reduce heat loss, and the steel casing surface friction does not occur, extending the life of the insulation layer having a thickness with medium temperature.