ISO 12944 C4 vs C5: How to Tell Which Category Your Project Is In

The question comes up on almost every industrial or coastal steel structure project: is this site C4 or C5? It’s not always obvious — and getting it wrong in either direction costs money. Over-classify to C5 on an inland site and you pay 30–40% more in materials for protection you don’t need. Under-classify a coastal […]

How Long Does Anti-Corrosion Coating Last on Steel Structures? What the Data Actually Shows

This question comes up on almost every industrial coating project, and the honest answer has more caveats than most people want. The short version: a well-specified, correctly applied coating system in the right environment will last 15–25 years before first major maintenance. A poorly specified or poorly applied system might start failing within 3–5 years. […]