11,000 Miles To Antofagasta: How ZSL Shipped 600 Tons Of Mining-Grade Steel To Chile Without A Single Rust Spot

The Enemy Is Not Distance. It's Salt.

The Pacific voyage from Tianjin to San Antonio, Chile covers approximately 11,000 nautical miles. For 35 days, every steel component is exposed to salt-laden humid air inside a sealed container. For projects near Chile's Atacama coastal strip, this isn't a logistics problem-it's a corrosion engineering problem.

ZSL's answer is a C5-M rated protection protocol, the same standard used for offshore platforms and coastal bridges.

 

The C5-M Protocol: Layer by Layer

Layer	Product Type	DFT (μm) | Purpose
Surface Prep	Sa2.5 Shot Blasting	Removes 99% mill scale; creates 40–70μm anchor profile
Primer	Epoxy Zinc-Rich (85% zinc)	60–80μm | Sacrificial cathodic protection
Intermediate	Micaceous Iron Oxide (MIO)	80–100μm | Barrier layer; blocks moisture penetration
Topcoat	Polyurethane (UV-resistant)	60–80μm | Chemical and UV resistance for Chilean sun exposure
Joint Protection	VCI Anti-Corrosion Film	Wrap | Seals machined surfaces during transit

 

Container Engineering: Keeping 600 Tons Still for 35 Days

Beyond coatings, ZSL's logistics team addressed the equally critical issue of cargo movement. H-beams that shift during high seas can damage their coating and distort bolt holes.

Our solution: Custom-welded steel support frames fabricated specifically for this shipment, securing each bundle with zero lateral movement tolerance. The result was a zero-damage arrival report from the Chilean site supervisor.

 

Project Data

- Destination: Antofagasta Region, Chile
- Application: Mining Support Warehouse
- Total Weight: 600 tons
- Containers: 32 × 40HC
- Sea Transit: 35 days
- Arrival Condition: No rust, no deformation

 

 💡 Shipping to South America?

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