Galvanized steel tubes are coated with zinc to prevent oxidation and rust, which ultimately prevents deterioration. They are a good choice when you need to protect steel pipes from corrosion. The protective quality of galvanized pipe is produced by a hot dip process in which zinc provides a protective layer that will rust before any steel is affected. In terms of durability, galvanized steel pipes can last more than 100 years, depending on the amount of corrosion exposure.