Hot galvanized corrosion resistance is much higher than the cold galvanized (also known as electro-galvanized). Hot galvanizing in a few years will not rust, cold galvanized in three months will rust.
The cold galvanizing process is used to protect the metal against corrosion by applying a coating of zinc filler to the surface to be protected by any of the methods of coating and drying to form a zinc filler coating in a dry coating With a content of zinc (up to 95%). Steel in the cooling conditions in the surface of galvanized, and hot dip galvanized steel pipe in the hot-dip conditions on the surface of galvanized, its adhesion is strong, not easy to fall off, although the phenomenon of hot galvanized pipe rust, But in a very long cycle to meet the technical and health requirements.
