Hot-rolled steel plate is a kind of steel processed by rolling process at high temperature, and its production process is usually carried out above the recrystallization temperature of the steel. This process enables the hot-rolled steel plate to have excellent plasticity and machinability, while retaining high strength and toughness. The thickness of this steel plate is usually large, the surface is relatively rough, and the common specifications include ranging from a few millimeters to tens of millimeters, which is suitable for various engineering and construction needs.