スティール

Steel hangers and rings on Oliunìd. Here you will find the best galvanized and cromated steel plates to bolt a climbing route, progression during a rescue maneuver, and an artificial ascent. Raumer Climbing, Climbing Technology, Petzl and Fixe are our best brands.

Galvanized steel is a carbon steel with a zinc coating. 

They do not last forever, they last as long as zinc is consumed while stainless steel lasts longer in the same corrosive environment.

Chromed steel is a carbon steel with a chrome coating. The latter, in addition to protecting the steel from rust, colors it. This also doesn't last forever, it lasts as long as the chrome coating is worn out.