Surface treatment for better anti-corrosion effect of highway guardrail

The spray coating anti-corrosion treatment of highway guardrail adopts electrostatic spray coating instead of traditional immersion treatment. Electrostatic spray coating is also known as electrostatic powder spray coating. Even if the powder is uniformly adhered to the highway guardrail under electrostatic action, this process does not require diluents, which is more environmentally friendly, harmless to human health, and waste free. Then, the powder is solidified in a high-temperature environment and seamlessly combined with sprayed metal objects, with a higher anti-corrosion ability than spray painting anti-corrosion methods for highway guardrail.