09/08/2026
Why does Hot-Dipped Galvanized After Fabrication (HDGAF) steel outlast standard alternatives in industrial refrigeration?
Standard fabrication (like bending or cutting) exposes raw steel, creating starting points for rust. HDGAF solves this by immersing the steel in molten zinc after all manufacturing is complete.
This order of operations provides massive advantages:
- Total Protection: 100% coating coverage that completely seals all exposed edges and holes.
- Longer Lifespan: A thicker minimum coating means it lasts up to 45% longer than standard mill galvanized steel.
- Self-Repairing: The zinc barrier automatically guards against minor scrapes up to 1/4".
That is why units, like the SGS Industrial Evaporative Condenser, feature an exclusive HDGAF casing option designed to significantly extend product life.
Read the full white paper to see the service life testing and thickness comparisons on our website: https://bit.ly/4ypCiRl