Boiler vessel plate is used to manufacture various boilers and important accessories. Due to the high pressure state of the boiler steel plate working at medium temperature (below 350 ° C), in addition to bearing high pressure, it is also subjected to impact, fatigue load, and water and gas corrosion. It is required to ensure a certain strength and have good welding and cold bending performance. It is the most widely used and widely used steel plate for pressure vessels in China. Pressure vessel steel plates are used to make equipment and components such as reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, boiler steam drums, liquefied petroleum gas cylinders, high-pressure water pipes for hydropower stations, and turbine volutes.