压力容器板用于制造蒸汽锅炉、压力容器及其他承压容器结构件用的钢板。这种钢板由于承受一定的气压和水压，以及不同温度的使用环境，如高、中、低温等，因此对这种钢板要求较为严格。除要求一定的强度、韧性外，还要求材质均匀，严格限制有害缺陷。
A steel plate used in the manufacture of steam boilers, pressure vessels, and other structural parts of pressure vessels. The steel plate is subjected to a certain air pressure and water pressure, as well as the use of different temperatures, such as high, medium, low temperature, and so on, so the steel plate is more stringent. In addition to requiring a certain strength and toughness, but also requires uniform material, strict restriction of harmful defects.

压力容器板种类：按成分分类可分为碳素钢板、合金钢板两大类；按强度分类可分为高、中、低压钢板；按使用环境分类可分为高、中、低温用钢板及耐腐蚀钢板。
Pressure vessel plate type: according to the composition classification can be divided into carbon steel and alloy steel two categories; according to the intensity of classification can be divided into high, medium and low pressure plate; according to the use of environmental classification can be divided into high, medium and low temperature steel and corrosion resistant steel plate.
压力容器板的厚度范围一般为5～200mm，期间分为 若干厚度规格。各国标准都列有推荐的板材尺寸及允许偏差。钢板的形状：如镰刀弯、平面度、直角度等。表面缺陷：钢板表面缺陷主要有裂纹、结疤、碾平的气泡、杂质、凸泡、气孔、压入氧化铁皮等。出于安全的需要，压力容器钢板对表面及内部缺陷要求较为严格。一般不允许上述缺陷存在。
The pressure vessel plate thickness range is generally 5 ~ 200mm, during which is divided into a number of thickness specifications. National standards are listed for recommended sheet sizes and tolerances. The shape of a steel plate, such as a sickle, a plane, a right angle, etc.. Surface defects: the surface defects of steel plate mainly include cracks, scars, flat bubbles, impurities, protruding bubbles, pores, and so on. For safety needs, the pressure vessel steel plate requires strict surface and internal defects. Such defects are generally not allowed to exist.
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