"Galvanized iron" refers to an iron or steel material that has been coated with a protective layer of zinc. This is done to prevent rust and corrosion, making the iron more durable and longer-lasting. Full definition
Where the workmen lived in a rustic setting — sheep grating for the verandah and the house lined with galvanized iron on outside, a great spot for «outside living» with campfires. (wikiaustralia.com)
DETAILS YOU»LL APPRECIATE Made of galvanized iron with a painted finish. (potterybarn.com)
The blue lacquer on galvanized iron work, 5 by 25 1/2 by 9 inches was dated 1967. (thecityreview.com)