A search of the manufacturer (Nuevo Iron) website produced an engineering drawing that details the base material and the applied coating. Looks like it’s a polyester powder coat over a chromate conversion coat, on galvanized steel tube. I’ve installed them on a playhouse out in the yard. Looks like the coating has good flex and is pretty thick. It’s only been a year but no issues or peeling so far.
Date published: 2021-07-17