The surface treatment of the corrugated beam guardrail can be divided into the following types:
1. Hot-dip galvanizing--Hot galvanizing is the most common surface treatment method for high-speed highways.
2. Cold galvanized spray - cold galvanized spray is generally used in rural or mountain roads, this surface treatment is lower than the cost of hot galvanizing, the appearance is also more beautiful.
3. Hot-dip galvanizing spray - hot-dip galvanized spray is the best of the three corrosion resistance, this surface treatment is mostly used in a relatively environmentally harsh environment, widely used in China's Heilongjiang, northern Liaoning.
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