Heat-treated wide and heavy steel plates are steel plates processed through special heat treatment techniques, primarily used in applications requiring high strength and wear resistance, such as heavy machinery, structural construction, shipbuilding, and pressure vessels. These steel plates typically have a thickness exceeding 60 mm and widths reaching several meters, making them suitable for the manufacturing of large structural components. After heat treatment, carbon steel wide and heavy plates exhibit improved strength, toughness, and wear resistance, suitable for manufacturing heavy mechanical equipment, automotive parts, and construction machinery. 20Cr13 stainless steel heat-treated wide and thick plate is a type of martensitic stainless steel plate. This stainless steel contains approximately 13% chromium and a relatively high carbon content. This chemical composition enables it to achieve excellent mechanical properties and wear resistance after appropriate heat treatment processes such as quenching and tempering.