Is the abbreviation of insulation pipe insulation pipe insulation pipe for transporting liquids, gases and other media, in the petroleum, chemical, aerospace, military, central heating, central air-conditioning insulation engineering, municipal and other pipes. Insulation suitable for handling a variety of media in the range of -150 ℃ -50 ℃, it is widely used in central heating, cooling and hot oil transport and Nuanshi, cold storage, coal, petroleum, chemical industry, cold insulation works . Polyethylene pipe insulation in construction and some forms of hydrophobic system is fully enclosed buried pipe insulation, flexible layout, reasonable structure, safe and reliable. Row tide steel casing pipe on both timely discharge moist gas, but also as a daily alarm signal tube running. Thermal compensation pipeline of high quality bellows compensation, and installed in the casing, made of buried form, without the provision of observation wells Buried pipe insulation, construction convenient operation, short construction period. For conveying 2.5MPa, 350 degrees Celsius below the steam or other medium steel jacket pipe insulation, this product made with steel outer protective layer having a high strength pipe insulation, difficult to damage, easy maintenance construction, long life advantages