For urban outdoor seating installations, embedded part materials must demonstrate exceptional corrosion resistance to withstand environmental exposure. The recommended anti-corrosion grade typically requires hot-dip galvanized steel with a minimum coating thickness of 85 microns (equivalent to 610g/m²), achieving ISO 1461 Grade FeG 360 or ASTM A123 Class C standards. This protection level ensures resistance to moisture, de-icing salts, and atmospheric pollutants commonly found in urban environments.
Stainless steel alternatives (typically Grade 316/L) provide excellent corrosion resistance for coastal or highly aggressive environments where chloride exposure is significant. The specific grade selection should consider environmental classification (C2 to C5 per ISO 12944), expected service life (25+ years for public infrastructure), and mechanical load requirements.
Proper surface preparation through abrasive blasting to SA 2.5 standard and appropriate coating application are critical for achieving specified protection levels. Regular maintenance inspections should verify coating integrity to prevent structural compromise from corrosion-induced section loss.