The difference between steel belt bellows and double-wall bellows, engineering material selection is no longer torn

In municipal engineering and residential pipe network construction, steel belt corrugated pipe and double-wall corrugated pipe are commonly used plastic pipe categories, and many practitioners are easy to confuse when selecting materials. In fact, there are clear differences between the two in terms of structure, performance, cost, etc., and these can be accurately selected. Structurally, the steel belt corrugated pipe is made of galvanized steel belt as a reinforced skeleton, and the outer package is made of polyethylene material, which combines the rigidity of steel and the corrosion resistance of plastics; the double-wall corrugated pipe is a pure polyethylene structure, composed of two layers of smooth walls inside and outside and a corrugated cavity in the middle, relying on the cavity structure to improve the overall strength. In terms of performance, steel bellows have higher ring stiffness, can withstand greater soil pressure and external heavy loads, and are suitable for main road areas with large buried depths and heavy traffic. Double-wall bellows have excellent flexibility, strong impact resistance, and are more suitable for scenarios with shallow burial and large terrain fluctuations, such as internal pipe networks in residential areas and farmland irrigation systems. In terms of cost and construction, the overall cost of steel bellows is slightly higher than that of double-wall bellows due to their steel content. During construction, the weight of steel bellows is too large, and they need to be installed with the help of lifting equipment. However, double-wall bellows are light and easy to handle, with higher construction efficiency. They are suitable for small projects or narrow operating environments. In summary, the selection of materials can be judged according to the needs of the project: if the project has a large buried depth and high load requirements, steel bellows are preferred; if the budget is limited and the operation scenario is flexible, double-wall bellows are a more suitable choice. To clarify these differences, the project material selection will naturally no longer be torn.