Epoxy Coating for Steel Columns and Beams: What Changes When Geometry Gets Complex

Applying epoxy coating to flat steel plate and applying it to fabricated structural sections — I-beams, H-columns, hollow sections, angles, channels — are different propositions. The product is the same. The surface preparation is the same. But the geometry creates specific challenges that flat-surface coating experience doesn’t fully prepare you for. Edges corrode first. Weld […]

Sa 2.5 vs Sa 3 Blast Cleaning: When the Difference Matters for Steel Coating

Sa 2.5 and Sa 3 are the two highest grades of abrasive blast cleaning for steel surfaces in the ISO 8501-1 standard. Most industrial coating specifications require Sa 2.5 — it’s the standard minimum for zinc-rich primers and high-performance epoxy systems. Sa 3 is specified less frequently, but when it’s required, it’s required for good reasons. Understanding […]