发布时间:2025-01-30 02:52:17
这个预埋管和火灾发生后启动不了设备无关。消防楼板及墙体内保护层30毫米以上的保护的都可以采用阻燃PVC管,管路和设备控制没有直接关系,消防线路要求的耐火,所以火灾后设备动作至少30分钟是正常的。
杭州新西湖小镇房子怎么样昨天看中一套有点偏僻未来会不会发展的好点
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