①低温压力容器受压元件应选用镇静钢。

The low temperature pressure vessel compression element should choose the calm steel.

②低温压力容器受压元件一般要求正火处理，目的细化晶粒，均匀显微组织，降低钢材无塑性转变温度。

The low temperature pressure vessel element general requirements for normalizing treatment to grain refinement and uniform microstructure, reducing the steel nil ductility transition temperature.

③必须做设计温度下低温冲击试验（V）。

Temperature impact test (V) must be done at design temperature.

④钢板δ>20mm，应逐块超声波检测。

The steel plate should be piecewise >20mm, ultrasonic detection.

⑤设计温度在-70到-100区间，目前国内尚无合适材料，可选用奥氏体不锈钢。-100~ -196℃，应选用奥 氏体不锈钢。

The design of temperature in the -70 to -100 range, at present there is no suitable material, can be used for austenitic stainless steel. -196 -100~ C, should be used austenitic stainless steel.

⑥根据《容规》三类容器的主要受压元件应进行材料复检验。

According to the main pressure elements "content regulation" three containers should be material inspection.

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