Galvanized steel coil is to prevent corrosion on the surface of the steel sheet and prolong its service life. The surface of the steel sheet is coated with a layer of metal zinc. This kind of galvanized steel sheet/coil is called galvanized sheet/coil. The thin steel coil is immersed in the molten zinc tank, so that a layer of zinc is adhered to the surface. At present, it is mainly produced by continuous galvanizing process, that is, continuous immersion of coiled steel sheet in a galvanized tank with molten zinc to make galvanized steel sheet/coil.
How to caculate galvanized steel coil weight? Weight calculation formula of galvanized sheet coil :
M(kg/m)=7.85*width(m)*thickness(mm)*1.03
For example: thick 0.4*1200 width: weight(kg/m)=7.85*1.2*0.4*1.03=3.88kg/m
The galvanized coil should have a good appearance, and there must be no defects that are harmful to the use of the product, such as no plating, holes, cracks, scum, excessive plating thickness, scratches, chromic acid dirt, white rust, etc. Foreign standards are not very clear about specific appearance defects. Some specific defects should be listed in the contract when ordering.