En 1317 Bridge Guardrail Zinc Coating Q235 Cable Guardrail Systems Humid Corrosion

This viaduct bridge guardrail system is engineered for elevated highways and overpass structures operating in high-humidity environments. Manufactured from Q235 carbon structural steel with full hot-dip galvanization, it ensures long-term structural integrity and corrosion resistance in moisture-intensive conditions such as urban viaducts and coastal transport corridors.

Bridge structures exposed to humid air and temperature fluctuations suffer from accelerated oxidation, coating degradation, and reduced service life of steel components.

The hot-dip galvanized coating forms a dense zinc-iron alloy layer, providing electrochemical protection and significantly reducing corrosion risk in long-term humid exposure.

• Urban viaduct systems
• Elevated highway ramps
• Metropolitan ring roads
• Multi-layer transportation bridges

The galvanized zinc layer acts as a sacrificial anode, corroding first to protect the steel substrate, ensuring long-term structural safety even under continuous humidity exposure.

• Select thicker zinc coating for coastal or high rainfall regions
• Choose thrie-beam for high-impact traffic corridors
• Confirm compliance with local highway safety standards

Q1: Is this suitable for coastal viaducts?
Yes, it is designed for high humidity and salt-laden environments.

Q2: What is the minimum zinc thickness?
Standard is ≥85μm, higher coatings are available.

Q3: Can it be customized?
Yes, beam type, height, and coating can be customized.

Q4: What is the service life?
Typically 20–30 years depending on environment.

Q5: Does it meet EU standards?
Yes, it can be manufactured to EN 1317 requirements.