Corrosion protection for shipping containers is not as simple as it may seem. Coating treatment is a major challenge, and three key issues must first be addressed.

Problem 1: The corrugated plate surface is too smooth.

If sandblasting is used, the plates are prone to deformation; if not, the coating adhesion will be poor, leaving hidden risks for future corrosion.

Problem 2: What to choose as the primer?

Epoxy zinc-rich primer won’t work since the surface treatment cannot meet the requirements. Epoxy coating, on the other hand, doesn’t provide sufficient corrosion resistance.

Problem 3: How thick should the coating be applied?

If it’s too thin, rust appears easily; if applied according to marine standards, lifting may cause cracking. So what’s the solution?

The challenge is not unsolvable. MengNeng’s graphene zinc powder coating provides the answer. It has excellent adhesion and requires only simple surface preparation, making it suitable for smooth container surfaces. After spraying, it becomes surface-dry within 30 minutes at 23 °C, and around 15 minutes at 35 °C, greatly reducing construction time.

Moreover, the graphene zinc-rich coating has passed a 4,200-hour cyclic aging test, effectively blocking water, oxygen, and other corrosive agents from reaching the metal surface. Finally, to resist UV rays and harsh marine atmospheric conditions, a fluorocarbon topcoat with outstanding weather and salt spray resistance is applied.

This system resists a wide range of corrosive marine factors, extending the service life of shipping containers to more than 15 years.