反应压力容器的壳体，历来常常是用成型钢板焊接而成的，在美国和日本尤其如此。
The shell parts of reactor pressure vessels have been often fabricated with formed plates welded together, especially in USA and Japan.
按设备工况，氧化脱氢反应器壳体应选用美国的SA240—304h钢板。
According to the equipment working condition, the shell of oxidative dehydrogenation reactor should select American SA240-304h steel plate.
钢板筒仓是一种薄壁壳体结构，对缺陷非常敏感。
The steel silo is a kind of thin-wall shell structure, so it is sensitive to imperfection.
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