Pressure vessel plate is the steel plate used for manufacturing steam boiler, pressure vessel and other pressure vessel structural parts. This steel plate is subject to certain air pressure and water pressure, as well as the use environment of different temperatures, such as high, medium and low temperature, so it is more strict. In addition to certain strength and toughness, the material shall be uniform and harmful defects shall be strictly limited.
In addition, it can be divided into carbon steel plate and alloy steel plate according to composition classification; According to strength classification, it can be divided into high, medium and low pressure steel plates; According to the classification of service environment, it can be divided into high, medium and low temperature steel plates and corrosion resistant steel plates.
Main domestic producers: Wugang, Angang, Laigang, Shanggang, Baotou, Sangang, etc;
The thickness range of pressure vessel plate is generally 5~200mm, which is divided into several thickness specifications. The recommended plate size and allowable deviation are listed in national standards. Appearance quality (1) Shape of steel plate: such as sickle bending, flatness, rightness, etc. (2) Surface defects: the surface defects of steel plate mainly include cracks, scabs, flattened bubbles, impurities, bulges, pores, pressed iron oxide scale, etc. For the sake of safety, pressure vessel steel plates have strict requirements for surface and internal defects. Generally, the above defects are not allowed. However, it is allowed to use proper methods to remove, and the removed part should be flat. Its thickness shall not exceed the allowable difference of steel plate thickness. Interlayer is also generally not allowed.
