... guardrail We are specializing in galvanizing product, such as galvanized steel, galvalume, galvanized highway guardrails. Hot dipped galvanized guardrail and accessoriesMaterial:Q235,Q345Certificates: GB/T19001-2000 ... ,high intensity, great corrosion resistant 1). Highway guardrailMaterial: Q235, Q345Method: Hot-rolledTwo waves: 3mm/4mm * 310mm *4320mm*85umThree waves: 3mm/4mm ...