Hot rolled coils are usually medium thick plates, and the slab is heated and rolled to a thickness, then pickled.

Hot rolled coil:

1. Poor toughness and surface flatness, low price;

2. The temperature of hot rolling is similar to that of forging;

3. The surface of the hot plate has oxide skin and the thickness of the plate is different

4. The price and use of hot-rolled products are much more extensive than cold rolling;

5. Hot rolled steel coil, mechanical properties are far less than cold processing, is inferior to forging processing, but has better toughness and ductility

6. The surface of the hot tie plate without electroplating is black brown

7. After electroplating, it can be distinguished from the smoothness of the surface, and the smoothness of the hot tie plate is low.

How to distinguish 304 stainless steel tube is cold rolled or hot rolled

1. from the thickness of the difference, the current domestic cold rolling is below 3.0 thickness, excluding 3.0, 3.0 and above belong to the hot tie.

2. from the surface analysis, cold rolled plate is relatively bright, hot rolled plate slightly white, rough surface.

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