Thermomechanically treated wide and thick plates are steel plates processed through special heat treatment procedures, primarily used in applications requiring high strength and wear resistance, such as heavy machinery, construction structures, shipbuilding, and pressure vessels. These steel plates typically have a thickness exceeding 60 mm and widths reaching several meters, making them suitable for manufacturing large structural components. After heat treatment, wide and thick carbon steel plates exhibit improved strength, toughness, and wear resistance, making them suitable for producing heavy-duty machinery, automotive components, and construction equipment. Due to the good workability and weldability of carbon steel, heat-treated wide and thick plates can undergo further processing and forming to meet complex engineering requirements.