Vent hole too small

Hot-dip galvanizing

Scope and limits

Flag hollow parts whose vent or drain opening is below galvanizing guidance.

Zinc coatings — Design recommendations for hot dip galvanizing

Source scope: Design of iron and steel articles for hot dip galvanizing.
Implementation in Prufi: Related guidance only. Vent screening cannot verify drain paths or orientation; the 10 mm screening threshold is not a universal DIN requirement.

No public STEP example is currently assigned to this check.