Close all blind flanges, inspection holes and manholes.
关闭所有盲法兰盖、并检查各个孔和人孔。
The reusable inflatable closure plug can be designed and prepared in advance according to caliber, thereby avoiding customization defects of flanges or blind spots.
充气式密封塞可预先根据管径设计制作好，能重复使用，克服了采用法兰或盲头需要定制加工的缺陷。
The reusable inflatable closure plug can be designed and prepared in advance according to caliber, thereby avoiding customization defects of flanges or blind spots.
充气式密封塞可预先根据管径设计制作好，能重复使用，克服了采用法兰或盲头需要定制加工的缺陷。
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