What is galvanized steel?

One. Galvanized steel plate is to prevent corrosion on the surface of the steel plate and prolong its service life. Coated with a layer of metal zinc on the surface of the steel plate, the zinc coated thin steel plate is called galvanized plate.

Two. different kinds of galvanized steel use different materials, such as.

1. hot dip galvanized steel plate. The sheet steel is dipped into the melted zinc tank so that the surface is adhered to a zinc sheet steel. At present, continuous galvanizing process is mainly used to produce, that is, continuous immersion of rolled steel plate in the melting of zinc in the plating tank to make galvanized steel plate;

2. alloyed galvanized steel plate. This steel plate is also made by hot dipping, but immediately after it is out of the groove, it is heated to about 500℃ to create an alloy coating of zinc and iron. This galvanized sheet has good coating tightness and weldability;

3. electric galvanized steel plate. The galvanized steel plate made by electroplating has good workability. But the coating is thin, corrosion resistance is not as good as hot dip galvanized sheet;

4. single-side plating and double-side difference galvanized steel plate. Single-sided galvanized steel plate, that is, galvanized products only on one side. It has better adaptability than double-sided galvanized sheet in welding, coating, rust prevention and processing. In order to overcome the shortcomings of single side without zinc coating, there is a galvanized sheet coated with a thin layer of zinc on the other side, namely double-sided differential galvanized sheet;

5. alloy,composite galvanized steel plate. It is made of zinc and other metals such as lead, zinc alloy or composite plating of steel plate. This kind of steel plate not only has excellent anti-rust performance, but also has good coating performance.

Three, the hardness of galvanized steel, depending on its substrate steel number and state, generally in about 150 degrees Brinell.