Home page

How to Avoid White Rust When Storing or Transporting Galvanized Steel

Release time:

2025-12-03

Know What Causes White Rust

White rust forms when freshly galvanized surfaces trap moisture—kind of like leaving a wet glass on a wooden table and getting that cloudy ring. Galvanized steel needs air circulation to stabilize its protective zinc layer, so anything that traps humidity becomes a risk.

Control Moisture From the Start

If you’re receiving galvanized steel from overseas, check whether your supplier uses moisture-proof packaging. Look for VCI paper, plastic wrap with desiccants, and sealed edges. Once materials arrive, keep them stored in a dry, well-ventilated area. Even a few hours in a damp corner can kick-start corrosion.

Avoid Stacking Too Tightly

Stacking steel too tightly is like crowding people in a room with no airflow—it gets damp fast. Use spacers or wooden blocks to let air move around the sheets or coils. This helps the zinc coating “breathe” and reduces moisture buildup that leads to white rust.

Don’t Store Outdoors Unless Fully Protected

Even though galvanized steel resists corrosion, storing it unprotected outdoors invites trouble. Rain, condensation, and temperature swings can all create the perfect environment for white rust. If outdoor storage is unavoidable, use waterproof covers with ventilation openings instead of fully sealed tarps.

Work With a Supplier Who Knows Prevention

At Bao Metal, we supply galvanized steel with proper export-grade packaging and clear handling instructions to help you avoid white rust from the moment the steel leaves our warehouse.

At Baometal, we have Steel Plate, Steel Coil, Steel Pipe, Steel Round Bar, Steel Profile, Wire Rod, Rebar, Ductile Iron Pipe.