Steel jacket steam pipe insulation factory 1, coating: protective outer steel to avoid corrosion corrosion steel pipe, pipe prolong life. 2, the outer jacket pipe: groundwater protection insulation from erosion, supporting the work of the tube and can withstand external loads, to ensure normal operation of the working tube. 3, polyurethane foam layer: to ensure that the medium temperature, to ensure the outer protective tube surface at constant temperature. 4, barrier, reflective layer: to ensure that organic foam material does not enter the hard inorganic refractory layer; a reflective layer portion of high temperature heat. 5, inorganic rigid insulation layer: high temperature, to ensure the interface between temperature and the organic insulating layer, to ensure not to be carbonized foam. 6, drag reduction layer: to ensure the free movement of expansion and contraction pipe work. 7, the working pipe: to ensure the normal flow of the transmission medium. Jacket pipe corrosion using corrosion protection coating and cathodic protection joint, making corrosion life can be greatly increased. Hydrophobic system in the form of a fully enclosed, 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, construction convenient operation, short construction period. For details, see: http: //www.rbffbw88.com/rbffbw-Products-10438933/