How to pronounce “corrugated iron” in English

Built in the post World War II years, St. Jude's was intended as a temporary structure, not meant to last more than a few years.It's coming up on 20 now, and yawning with cold air and aching joints, single story with windows every six feet along its length, and a roof of corrugated iron.Its crude purity enhanced the idea the St. Jude's faithful had about being the chosen ones.