高速公路护栏螺栓采用机械镀Zn的表面处理工艺，与 热浸镀相比具有保证质量、镀层厚度可按要求任意控制、耐腐蚀性能好、生产效率高、成本 低、后处理简单等优点.
The surface Zn coating by mechanical zincification t echnology was suaessfully applied for highway guardrail bolt.This technology has many advantages,in comparison with hot dip plating,such as good assurance of co ating quality,esay control of coating thickness,excellent corrosion resistance,h igh production efficiency, low cost, and simple post-treatment.
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