DX52D+Z galvanized sheet, DX51D+Z DX52D+Z Songchensteel galvanized sheet

DX52D+Z galvanized sheet, DX51D+Z DX52D+Z Songchensteel galvanized sheet is also a kind of galvanized sheet.

Ⅰ. Galvanized Sheet

Galvanized sheet is a steel plate coated with zinc. Galvanizing is an economical and effective preservative method that is often used. About half of the world's zinc production is used in this process.

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

Ⅱ. Classification

According to the production and processing methods can be divided into the following categories:

①Hot dip galvanized steel plate. Dip the sheet steel into the melted zinc tank, In which the surface is adhered to a zinc sheet. 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;

②alloyed 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;

③Electric 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; ④Single-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;

⑤Alloy, 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. In addition to the above five kinds, there are color galvanized steel plate, printing coated galvanized steel plate, PVC laminated galvanized steel plate and so on. But at present the most commonly used is still hot dip galvanized sheet. ① Main domestic manufacturers: Wuhan Steel, Anshan Steel, Baosteel and Baoding Purui Trading (Steel) Co., LTD.; ② The main production countries abroad are Japan, Germany, Russia, France, etc.

Ⅲ. Size and specification

The relevant product standards state the recommended standard thickness, length and width of galvanized sheet and their allowable deviations. Thickness deviation is generally 0.05mm, length and width deviation is generally 5mm, and the thickness of the plate is generally between 0.4-3.2.

Ⅳ. Appearance

(1) Surface state: galvanized plate due to different treatment methods in the plating process, the surface state is different, such as ordinary zinc flowers, fine zinc flowers, flat zinc flowers, zinc flowers and phosphating surface. The German standard also provides for surface grades. (2) Galvanized sheet should have a good appearance, no defects harmful to the use of products, such as no plating, holes, cracks and scum, more than thick plating, abrasion, chromic acid dirt, white rust, etc. Foreign standards are not very clear about the specific appearance defects. Some specific defects should be specified in the contract when ordering.

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Ⅴ. Galvanized amount

Galvanized quantity standard value: galvanized quantity is a generally used effective method to express the thickness of zinc layer of galvanized sheet. The unit of galvanized quantity is g/m2.

Ⅵ. Chemical composition

The requirements for the chemical composition of galvanized sheet substrate, different standards, such as Japan does not require, the United States is required. Inspection of finished products is not generally carried out.

Ⅶ. Packaging

It is divided into two kinds: galvanized sheet cut into fixed length and galvanized sheet packing with coil. General iron packaging, lined with moisture-proof paper, with iron kidneys tied on the bracket. Strapping should be firm to prevent internal galvanized sheet friction.

Calculation formula of galvanized sheet

Galvanized sheet calculation formula :M=7.85* length * width * height * zinc layer

DX52D+Z galvanized sheet, DX51D+Z DX52D+Z Songchensteel galvanized sheet