Hot rolled steel plates have good strength and hardness, and are suitable for structures with heavy loads. They have good plasticity and are easy to process into parts of various shapes. The surface of hot rolled steel plates can be coated to improve their corrosion resistance, making them suitable for use in various harsh environments.
The precision of cold-rolled steel plates is higher than that of hot-rolled steel plates, with good surface flatness, small dimensional tolerance, uniform thickness and good surface quality.
Hot rolled coils are rolled at high temperatures and have good ductility, toughness and wear resistance, which is beneficial for subsequent processing and application.
Its tensile strength is as high as 355MPa, and its yield strength also reaches the corresponding standard, which makes Q355B steel plate have better strength and stability under large loads and complex working conditions. At the same time, Q355B steel plate also has good toughness and impact resistance, and can maintain stable performance in harsh environments.
The surface quality of hot rolled steel strip is one of its important characteristics. The standard specifies the allowable number and type of various surface defects to ensure that the surface quality of the strip meets the requirements, thereby reducing problems during processing and improving product quality.
S235JR is a commonly used low-carbon structural steel, suitable for the manufacture of various building structures and engineering machinery. It has good plasticity, toughness and welding performance, and can meet various processing and connection requirements. S275JR is a medium-strength structural steel with high strength, good plasticity and weldability. In the fields of construction and mechanical engineering, S275JR is widely used in the manufacture of heavy equipment and structural parts. S355JR is a structural steel with excellent performance, suitable for various engineering structures and construction projects. S355JR material has much higher tensile strength, impact toughness and wear resistance than S235JR and S275JR, and also has good machinability and reliable connectivity. Therefore, S355JR is often used in the manufacture of large bridges, ships and high-rise buildings.
