Hot-rolled carbon steel coils are thin rolled steel products made from steel billets through high-temperature heating and rolling processes. The thickness is usually between 1-25mm and the width can reach 600-2500mm. The surface retains iron oxide scale (black scale), has high strength, good plasticity and weldability, and is widely used in construction, automobiles, home appliances, pipeline manufacturing and other fields. Hot-rolled steel coils can be further processed into cold-rolled products or galvanized and coated steel products to meet diverse needs, and are important basic materials in industrial manufacturing.