What is the difference between cold rolled steel coil and galvanized steel coil

Cold rolled steel coil generally refers to a process that is not heated before rolling. But now because the thickness of the rolled coil is relatively small, there will be a lot of plate bending or cracks in the process of handling and use. There are many cold rolled steel coil manufacturers who want to control the size and precision of rolled strip steel. Due to the long production line of cold rolled steel coil, many equipments and complicated process. However, current users have higher and higher requirements for the precision of the strip steel size of the rolled coil, and at the same time also have requirements for the shape and surface quality of the cold rolled steel coil.

cold rolled steel coil

Galvanized steel coil refers to a steel coil coated with a layer of zinc on the surface. Galvanizing is an economical and effective anti-rust method that is often used. About half of the world's zinc production is used in this process.

In fact, it is easy to distinguish between cold rolled steel coil and galvanized steel coil. We can detect the difference with our hands. The surface of the cold rolled steel coil has a certain gloss. It feels smooth to the touch, and it feels a bit like the steel water cup we use to drink water.

In terms of accuracy, the thickness of cold rolled steel coil is thinner than that of hot rolled strip steel, and the accuracy is more precise. Can be accurate to one digit after the decimal point. In terms of size, the thinnest thickness of cold rolled steel coil can be made into a steel strip of 0.001 mm. The surface quality of cold rolling is superior to that of hot rolling. Cold rolled steel coil can now produce a mirror surface.

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The difference between cold rolled steel coil and hot rolled steel coil