Nowadays, the application range of weathering steel is more and more wide, and weathering steel can also be seen in the decoration of various buildings. Especially like some hollow landscapes, there are more weathering steel A588. Today we will find out about weathering steel. Weathering steel is mainly used in bridge construction projects. Most of the bridge constructions use Q345qD and Q345qE. Due to the addition of corrosion-resistant alloying elements, it has superior atmospheric corrosion resistance to ordinary bridge steels. Weathering steel is generally used in the furnace-smelting (converter, electric furnace-microalloying treatment-argon-LF refining-low superheat continuous casting (feeding rare earth wire)-controlled rolling and cooling). The scrap steel is added into the furnace together with the charge, and is smelted according to the conventional process. After the steel is discharged, the deoxidizer and the alloy are added. After the molten steel is treated by argon blowing, the molten steel is immediately cast, and the molten steel after the argon temperature adjustment is cast into a slab by the continuous casting machine. The rare earth element is added to the steel, and the weathering steel of the sail sail is purified, and the content of inclusions is greatly reduced.