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所谓隐蔽型消防喷淋头,是在普通快速喷淋头基础上增加一组隐蔽护盖和支承圈(如图示)。护盖与盖座以低熔点金属焊接,火灾时护盖在略低于喷头动作温度时先行脱落,护盖脱落后喷头的动作及作用与普通
The so-called hidden fire sprinkler is based on the ordinary quick sprinkler head to add a group of hidden cover and support ring (as shown). Cover and cover with low melting point metal welding, cover the fire in the fire slightly lower than the first action temperature when the nozzle off, after the cover off the nozzle action and role of ordinary