Design of thermal insulation layer for spiral steel pipe with heat preservation and anticorrosion

　　Heat preservation and anti-corrosion steel pipe is a kind of spiral steel pipe which integrates heat preservation and anti-corrosion. With the development of society, the application of heat preservation and anti-corrosion steel pipe is more and more. The product is an important part of the construction of urbanization society

　　Thermal insulation and anti-corrosion spiral steel pipe plays a very important role in life. The thicker the insulation layer of the spiral steel pipe is, and the smaller the heat loss of the pipe is, the fuel can be saved. However, with the increase of the thickness, the investment cost of the insulation structure will increase. Moreover, the thermal insulation and anti-corrosion spiral steel pipe is to comprehensively consider both the investment of pipeline insulation structure and the annual operation cost of pipeline heat dissipation loss. The product can be converted into the insulation layer thickness with the minimum annual calculation cost in a certain period of time.

　　And the curve shows that the cost of heat preservation increases with the increase of the thickness of the insulation layer. It shows that the cost of heat loss decreases with the increase of the thickness of the insulation layer, and the corresponding thickness is the economic thickness of the insulation material. Therefore, the thickness design of thermal insulation and anti-corrosion spiral steel pipe directly affects the thermal insulation effect of the product.