Coastal areas have high humidity and salt content, making steel space frames prone to corrosion, which affects the structure's service life and safety.
Selecting Corrosion-Resistant Materials: In coastal areas, it is recommended to use steel with excellent corrosion resistance. Weathering steel exhibits good corrosion resistance in atmospheric environments.
Anti-Corrosion Coating: Use a high-performance anti-corrosion coating, such as a three-layer anti-corrosion system of epoxy zinc-rich primer + epoxy micaceous iron oxide intermediate paint + polyurethane topcoat. The coating thickness should be selected according to environmental conditions; generally, a total thickness ≥200 µm is recommended.
Catholic Protection: Install a cathodic protection system in the space frame structure, such as a sacrificial anode or impressed current cathodic protection system, to further improve the structure's corrosion resistance.

Time：29/07/2026 17:18:38

In coastal environments, steel structures corrode extremely rapidly, thus requiring very specific corrosion protection measures. This is mainly reflected in the need for more stringent corrosion protection design levels, thicker coating systems, and more stringent construction and acceptance standards.

Environmental Classification: Accurately determine the C5 or CX level according to ISO 12944.
System Selection: Select a heavy-duty anti-corrosion coating system with a total dry film thickness of at least 280μm.
Reinforcement of Critical Components: For ultra-long service life or underwater structures, employ composite measures such as thermal spraying of metal or cathodic protection.
Strict Construction and Acceptance Control: Strictly adhere to Sa 2.5 grade surface treatment and coating quality testing.

The final solution must be determined comprehensively based on factors such as the specific structural type, design life, and construction conditions.

Time：27/07/2026 16:06:37

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