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工业厂房耐火等级

岩棉金属夹心板房的耐火等级算几级

地瓜 | 2021-08-01 18:58
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回答 | 1

周家斌 2022-07-28 11:34 00 [回复]举报

这只能问耐火极限,无法判断厂房耐火等级,两个概念。

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