This June, a grand photovoltaic exhibition was held in Shanghai, China, and Mengneng was honored to participate.

At the event, we met many solar mounting system manufacturers. However, most of them focused only on land-based PV corrosion protection, while few addressed the severe corrosion challenges of offshore solar.

So today, let’s talk about:

How can offshore PV mounts be protected from corrosion?

Offshore PV structures operate long-term in CX-level high-corrosion marine environments, facing constant exposure to salt spray, humid air, and intense UV radiation. These factors rapidly degrade coatings.

Even more critically, tidal changes bring repeated seawater immersion and wet-dry cycling, accelerating corrosion and severely threatening the structural safety and service life of PV mounts.

That’s why coatings for PV structures must comply with ISO 12944-9 standards and pass the 4,200-hour cyclic aging test, which includes:

• 72 hours of UV + damp heat aging

• 72 hours of salt spray corrosion testing

• 24 hours of low-temperature shock testing

This cycle is repeated 25 times, totaling 4,200 hours, fully simulating the destructive effects of marine environments on coatings.

To withstand such harsh conditions, Mengneng recommends the following protective coating system: Graphene-based low surface treatment primer + polyurethane topcoat,

offering outstanding corrosion resistance, anti-aging properties, and UV durability, with a protective life of over 25 years.

Only with truly high-performance and long-lasting coatings

can we safeguard valuable assets, extend project lifecycles, and significantly reduce maintenance costs.

If you have relevant needs or questions, feel free to contact the Mengneng team at any time!