Saline-alkali ground construction, corrosion resistance advantages of steel bellows

Saline-alkali terrestrial soils contain high concentrations of saline-alkali components, and the content of chloride ions, sulfate and other corrosive media in groundwater is high, which poses a great challenge to the durability of underground pipelines. Ordinary metal pipelines are prone to oxidative corrosion, while traditional plastic pipelines may leak and be damaged due to insufficient material corrosion resistance, which brings a heavy burden to the later operation and maintenance of the project.

With its unique steel belt reinforced polyethylene composite structure, the steel belt bellows show significant corrosion resistance advantages in the construction of saline-alkali terrain. The outer layer of the pipeline is made of high-density polyethylene, which has excellent chemical corrosion resistance. It can directly isolate the contact between saline-alkali soil, groundwater and the inner steel belt, and avoid the corrosion and oxidation of the steel belt from the root. The polyethylene material will not chemically react with the saline-alkali composition. Even if it is in a high-saline-alkali environment for a long time, it can maintain structural integrity and will not cause problems such as material aging and brittle cracking.

At the same time, the composite process of steel belt and polyethylene is close and reliable, and the bonding force between layers is strong, which effectively prevents the saline-alkali medium from penetrating into the steel belt layer and ensures the overall structural stability of the pipeline. During the construction of saline-alkali terrain, the steel belt corrugated pipe does not need to be equipped with additional complex anti-corrosion coatings or linings, reducing the construction process and material costs, and the pipeline is light in weight, easy to transport and lay, and adapts to the complex terrain conditions of saline-alkali land.

Compared with traditional pipeline products, steel bellows have more stable corrosion resistance in saline-alkali geological environments, can effectively prolong the service life of pipelines, reduce the frequency and cost of later maintenance, and are an ideal pipeline choice for municipal drainage, agricultural irrigation, industrial sewage and other projects in saline-alkali land.