Many factors can affect the normal microstructure of galvanized zinc coatings, but the three most significant ones can be summarized as follows:
(1) Changes in the chemical and physical properties of the steel pipe substrate itself;
(2) Variations in the temperature and duration of zinc dipping during galvanizing (also known as intensity factors and quantity factors);
(3) The addition of other alloy components (or chemical elements) to the molten zinc.
