Galvanized Sheet

Galvanized sheets can be categorized into several types based on their production and processing methods:

① Hot-Dip Galvanized Steel Sheet. A thin steel plate is immersed in a molten zinc bath to coat its surface with a thin layer of zinc. Currently, the main production method is continuous galvanizing, which involves continuously dipping coiled steel plates into a zinc-coated bath to form galvanized steel sheets.

② Alloyed Galvanized Steel Sheet. This sheet is also manufactured by the hot-dip process, but it is immediately heated to about 500℃ after exiting the tank to form an alloy film of zinc and iron. This galvanized sheet has good adherence 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-dip 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, and processing compared to double-sided galvanized sheets. To overcome the drawback of the uncoated 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 Alloy and composite galvanized steel plates. Made by alloying zinc with other metals such as aluminum, lead, and zinc, these plates are further coated to form composite galvanized steel. They offer both rust prevention and excellent painting properties.

In addition to the aforementioned five, there are also color-coated galvanized steel sheets, printed coated galvanized steel sheets, and PVC-laminated galvanized steel sheets, etc. However, the commonly used type is still the hot-dipped galvanized sheet.