Pressure vessel plate for the manufacture of steam boiler pressure vessel and other pressure vessel structural steel plate this steel plate because of a certain pressure and water pressure, and different temperature environment, such as high and low temperature, so the requirements of this steel plate is more strict.
Pressure vessel plate thickness range is generally 5~200mm, divided into a number of thickness specifications national standards are listed recommended plate size and allowable deviation appearance quality.
(1) the shape of the steel plate: such as sickle bending flatness straight Angle
(2) surface defects: steel plate surface defects mainly crack scar grinding flat bubble impurities convex bubble pores For the sake of safety, pressure vessel steel plate has strict requirements on surface and internal defects. The above defects are generally not allowed to exist, but they are allowed to be removed by appropriate methods. The removed part should be flat, and its thickness should not exceed the allowable difference of the thickness of the steel plate.
All kinds of boiler and pressure vessel steel plate generally required to do tensile bending and impact test method can refer to the standard test method of ordinary carbon steel sheet provided by the standard test shall take into account the provisions of the standard heat treatment conditions in addition, for the use of strict requirements of the site, the order should also be added non-destructive inspection clause.
Pressure vessel steel plate quality index
