At present, due to the more and more extensive application fields of pipeline transportation in China, the demand for thermal insulation and anti-corrosion of steel sleeve steel pipes of national standard spiral steel pipes has gradually increased, and the production processes of major anti-corrosion steel pipe manufacturers have gradually advanced. The anti-corrosion and heat preservation technology is used in the original pipeline or steel pipe to slow down or prevent corrosion and deterioration under the chemical and electrochemical action of the medium or by the metabolic activity of microorganisms according to the application in different working environments.

National standard spiral steel pipe
    
The thermal insulation and anti-corrosion technology of the steel sleeve steel pipe of the national standard spiral steel pipe has the following advantages. The heat loss is only 25% of the traditional pipe, which is excellent in energy saving and reduces energy costs. It has excellent waterproof and corrosion resistance, and can be directly buried underground for easy construction. The kang has strong low temperature ability and can be directly buried under frozen soil. The service life can be as long as 50 years.
 
According to the structural structure, the steel jacketed steel steel pipe of the national standard spiral steel pipe can be divided into: inner sliding steel jacketed steel vapor composite thermal insulation pipe, outer sliding steel jacketed steel vapor composite thermal insulation pipe, and its structural composition is: working steel pipe , glass wool thermal insulation layer, aluminum foil reflective layer, stainless steel fastening steel belt, sliding guide bracket, air insulation layer, outer protective steel pipe, outer anti-corrosion layer.