Highway impact-proof guardrail is typical of cold-formed steel products, the company introduced by American R425 strip mill, automatic punching leveling precision feeding, lane 18 roll forming, computer scale slow cutting and other advanced technology conditions, the maximum guarantee of the plate anticollision guardrail and a linear dimension. The section size completely meet YB4081-92 standard requirement. USES: widely used in highway, railway, airport, is the barrier