Highway guardrail is the main form of semi-steel guardrail. It is a continuous structure spliced with corrugated steel guardrail boards and supported by main columns. The role of the vehicle in absorbing energy during a collision is not easy to be destroyed, but at the same time it can play a very good role in protecting the vehicle and the crew. Expressway guardrails bend to increase aesthetics, at the same time increase the strength of the railings, both have both; the automatic production line is extruded and formed, the surface is clean and without damage, and the corrosion resistance is extremely strong; the surface treatment method is mature; The characteristics of sunlight, high temperature resistance, low temperature, etc., the service life in outdoor environment can reach 10-25 years; the product structure is simple, beautiful and practical, easy to transport, install, good anti-theft performance, limited by the actual terrain, for mountain, slope, multi-bend The adaptability of the zone is extremely strong, the cost is moderate, and it is suitable for large-area adoption.