Views: 0 Author: Site Editor Publish Time: 2026-03-31 Origin: Site
In the global steel trade, the quality of the product is only half the battle; the other half is the integrity of its arrival. For Galvanized Coils, Sheets, Strips, and Chequered Plates, the transition from a dry warehouse to a high-humidity shipping container often leads to the industry’s biggest headache: White Rust (Zinc Hydroxide).
At GY Metals, we have engineered a specialized "Four-Tier Defense" to ensure your cargo maintains its factory-bright finish, regardless of the transit time.
1. Tailored Packaging for Each Product Form
Different geometries require different protection. We don't use a "one-size-fits-all" approach:
Galvanized Coils (GI Coils): We utilize the "Eye-to-Sky" or "Eye-to-Wall" wrapping method. Each coil is encased in VCI (Volatile Corrosion Inhibitor) paper, followed by a waterproof plastic layer and a galvanized outer steel shell. Inner and outer edge protectors prevent "banding marks."

Anti-rust inner packaging

Anti-rust outer packaging
Galvanized Sheets (Cut-to-Length): To prevent capillary action (where moisture is sucked between flat sheets), we use interleaving VCI technology and 6-side steel frame bundling to ensure the stack remains a vacuum-sealed block.
Galvanized Strips: Given their narrow width, stability is key. We use tight-tension horizontal strapping and reinforced wooden or steel pallets to prevent "telescoping" (sliding) during crane handling.
Galvanized Chequered Plates: The raised patterns create micro-air pockets that trap moisture. We apply extra desiccant placement within these bundles and use heavy-duty PE film to prevent "friction oxidation" between the patterned surfaces.
2. The "Dry-Container" Protocol
A shipping container is a "pressure cooker" of humidity. We neutralize this via:
Industrial-Strength Desiccants: We deploy Calcium Chloride (CaCl2) bags with an absorption rate exceeding 300%. These are strategically hung on container walls—not just tossed on the floor—to capture "Container Rain" before it drips.
Moisture-Controlled Dunnage: We use only ISPM-15 heat-treated timber with a certified moisture content below 20%. Many suppliers use "green" wood, which actually causes rust; we strictly forbid it.
Base Vapor Barrier: A thick, puncture-resistant plastic liner is laid across the entire container floor to block rising dampness from the sea.
3. Professional Securing & Lashing
Anti-Friction Mats: We place rubber pads under all coils and bundles to prevent the zinc coating from being scratched off by vibration—scratches are where rust starts.
Steel-on-Steel Securing: We use high-tensile steel wires and turnbuckles, ensuring zero movement during heavy sea swells.
Why Our Clients Choose Our "Zero-Rust" Delivery:
No Hidden Costs: Eliminate the need for post-arrival chemical cleaning or "pickling" of white rust.
Market-Ready Quality: Your customers receive steel with pristine spangles and sharp patterns, ready for immediate sale or fabrication.
Lower Insurance Premiums: Our proven low-claim record often helps buyers negotiate better maritime insurance rates.
"Price is what you pay; Value is what you receive."
At GY Metals, we deliver value by ensuring that the 100th ton looks exactly like the 1st ton.
If you would like to access our "Transportation Photo Gallery" for your reference, please contact us.