Buried steam pipe insulation price for conveying steam pipe work. ? Core tube material properties, diameter size, dimensional tolerances, minimum wall thickness in line with the relevant national or industry standards, the core tube surface to remove rust, grease, moisture and other contaminants. Protection cushion: Prevent sandwich core tube due to displacement damage inorganic insulation layer between the core pipe and insulation. When the core tube spiral welded steel pipe, the inorganic insulating layer of hard material, a protective cushion. Carpet cushion is generally used to protect aluminum, density ≤192kg / m3, thermal conductivity at room temperature ≤0.056w / (m · k); plus hotline shrinkage ≤4%. Inorganic Insulation: high temperature insulation material made of inorganic insulation. Thermal conductivity at room temperature ≤0.055w (m · k) can be selected depending on the structure of porous calcium silicate (density ≤220kg / m3), magnesium silicate, rock wool (density ≥110kg / m3), while the moisture content of the material, resistance to temperature resistance, compressive strength and other indicators and meet the relevant requirements. Organic Insulation: insulation with an organic insulating material. Polyurethane rigid foam, density 55-65kg / m3, compressive strength ≥0.2MPa, room temperature thermal conductivity ≤0.027w / (m · k), water absorption ≤3%, Temperature ≤140 ℃. The protective layer of soil to prevent corrosion. This product is commonly used wound epoxy glass Special strengthen the level or coal tar epoxy structure (3 fabric four oil) as an outer steel pipe coating. Under special circumstances, it may be two-layered structure or three-layer structure of polyethylene coating. Feel supplemented, if necessary, "cathodic protection" measures. For details, see: www.rbffbw88.com