Unqualified aluminum alloy guardrail, when used due to the influence of sunlight, air, rain, etc., resulting in aluminum profile deformation, and even resulting in falling off, thin oxide film thickness, insufficient thickness, aluminum profile surface easy to rust, corrosion.

Sampling of some aluminum profiles without products, sites, production licenses, certificates, their oxide film thickness does not meet the national requirements, and some even have no oxide film.

Aluminum profiles with a large amount of mixed aluminum and waste aluminum can greatly reduce the cost. However, it will lead to unqualified chemical composition of construction aluminum profiles, which seriously endangers the safety of construction projects. The inferior aluminum profile greatly reduces the closing time. Reduce the loss of chemical reagents, the cost is reduced, but the corrosion resistance of the profile also greatly reduces the choice of aluminum alloy guardrail when it is best to look for high reputation guardrail products.