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stguradrail on 25 May 18he surface of the corrugated guardrail is divided into two forms, hot galvanizing and plastic sprayed . Spray-plastic guardrails are sprayed on the product on the basis of hot galvanizing, which is better than ordinary hot galvanizing for the anti-corrosion effect, and also has a beautiful effect. The anti-corrosive age of ordinary hot galvanizing is about 20 years, but after it is sprayed, it can reach 30 years of anti-corrosion. This is more suitable for rainy, windy and seaside areas.