钢构件表面除锈后两道红丹打底，构件的防火等级按多少小时处理？？？ 请教各位高人....
钢构件表面除锈后两道红丹打底，构件的防火等级按多少小时处理？？？ 请教各位高人....
2楼
防锈漆，能防火吗？
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3楼
兄弟 你又不是防火涂料 有什么用？？一般的来说设计总说明上面都有构件的防火耐火等级和时间的
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4楼
难解``````````````````````````````````````````````````````````````````````````难解`````````````````````````````
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