Galvanized steel sheets can be categorized into the following types based on production and processing methods:

① Hot-dip galvanized steel sheet. A thin steel plate is immersed in a molten zinc bath to coat it with a thin layer of zinc. Currently, the main production method is the continuous galvanizing process, where rolled steel plates are continuously immersed in a zinc-coated bath to produce galvanized steel sheets.

② Alloyed galvanized steel sheet. This steel sheet is also manufactured by the hot-dip process, but after being dipped, it is immediately heated to approximately 500°C to form an alloy film of zinc and iron. This galvanized sheet exhibits good adhesion to paint and weldability.

③ Electro galvanized steel sheet. This type of galvanized steel sheet manufactured by electroplating offers good workability. However, the coating is thinner and less corrosion-resistant than hot-dipped galvanized steel sheets.

④ Single-sided and double-sided differential galvanized steel sheets. Single-sided galvanized steel sheets refer to products that are zinc-coated on only one side. They offer better adaptability in welding, painting, rust prevention treatment, and processing compared to double-sided galvanized sheets. To overcome the drawback of uncoated zinc on one side, there is also a type of galvanized sheet with a thin zinc coating on the other side, known as double-sided differential galvanized steel sheets.

⑤ Alloyed, composite galvanized steel plate. It is made by alloying zinc with other metals like aluminum, lead, and zinc, and then forming the steel plate through composite galvanization. This steel plate boasts both rust-proof properties and excellent coating performance.

In addition to the aforementioned five types, there are also colored galvanized steel sheets, printed coated galvanized steel sheets, and polyvinyl chloride laminated galvanized steel sheets, etc. However, the commonly used one is still hot-dip galvanized sheet.