| 摘要 |
PROBLEM TO BE SOLVED: To provide a guard fence capable of improving the durability of a cross rail while keeping the appearance beauty of the cross rail and capable of reducing cost of maintenance management such as repainting work.SOLUTION: In a guard fence P, pillars 1 are made of steel, and each of cross rails 2 comprises a steel core material 21 and an aluminum alloy cover material 22 for covering the core material 21. Thus, the durability of the cross rails by the rustproof function of the aluminum alloy cover materials 22 can be drastically improved, and the impact resistance of the steel pillars 1 can be imparted to the cross rails 2 by the steel core materials 21. Accordingly, the guard fence P capable of keeping appearance beauty for a long term and bearing collision of a vehicle and the like can be provided. |
