Why are solar mounting structures so prone to rust? Let’s take a look at the real situation. This is a connection point of the structure, where obvious rust has already occurred.

— Because the joint between the bolts and the structure bears significant tensile or shear stress, when combined with a high-humidity and high-salt environment, corrosion accelerates. Over time, constant wave impact has also caused white rust to appear on the lower part of the structure. This white rust rapidly consumes the zinc layer; if not treated promptly, it further corrodes the galvanized coating and eventually leads to rusting of the steel substrate underneath.

Let’s also look at the step board next to the solar mounting structure. Severe corrosion is also visible here. One possibility is that heavy equipment was placed here during installation, damaging the paint surface. Another possibility is uneven paint application, resulting in insufficient coating thickness, which makes the area more prone to corrosion. Both causes are plausible.

As for the structure materials, they are generally galvanized steel or zinc-aluminum-magnesium alloys. Under a normal atmospheric environment(C3), such materials can last 10–30 years. However, severe rusting is still observed—clearly, the offshore CX-level environment significantly increases the corrosion rate. The only viable solution is applying an anti-corrosion coating.

To address this, Mengneng's cold zinc-spray coating serves as an efficient and convenient repair material. It contains a high concentration of zinc powder, offering cathodic protection and excellent weather resistance. It can be directly sprayed onto clean galvanized surfaces, cures quickly, and shortens the maintenance time.

Even after anti-corrosion treatment, regular inspection and maintenance of the solar system are essential to ensure long-term stable operation.