The galvanized steel sheet is 40 grams per square meter, and the thickness of the galvanized layer should be 5.398 microns.

Galvanized sheet is a steel plate with a layer of zinc plated on the surface. Galvanizing is an economical and effective rust prevention method that is often used, and about half of the world's zinc production is used in this process.

Appearance of galvanized sheet

(1) Surface state: Because of the different treatment methods in the plating process, the surface state of the galvanized plate is also 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 the product, such as no plating, holes, cracks and scum, more than thick plating, abrasion, chromic acid dirt, white rust, etc.