What should I do if regular hot-dip galvanized steel strands easily rust in coastal saline-alkali areas?

Coastal salt spray and chemical plant areas are highly corrosive environments, where regular B-grade hot-dip galvanizing is not enough. There are two upgrade options that can solve this.

Thickened hot-dip galvanizing (A-grade premium galvanizing)

Zinc coating ≥350g/㎡, thickness over 50μm, passes neutral salt spray test for 800 hours without red rust. Outdoor lifespan is extended to over 30 years, suitable for offshore wind power and coastal power grids.

Zinc-aluminum alloy coated steel strands

The coating is a zinc-aluminum-magnesium alloy, offering 3-5 times the corrosion resistance of regular hot-dip galvanizing. The coating can self-repair if damaged, making it ideal for salt spray and acidic/alkaline environments. Suitable for chemical plants and aquaculture tie lines on tidal flats.

Installation tips: Avoid cutting or scratching the zinc layer during installation. Apply zinc-based touch-up paint on cut surfaces to prevent corrosion from spreading at damage points.