A good quality steel metal tube is a primary requirement for manufacturing hot dip galvanized steel tubes. The metal is plunged in a bath of molten zinc, which adds an additional layer of zinc coating on these tubes. The molten zinc is at an extremely high temperature. The industrial galvanized steel tubes feature a uniform, and tough barrier coating. This coating provides them a long term protection, and makes them capable of withstanding the most unfriendly environmental conditions. They can be used in indoor, as well as outdoor environments.