天花板筒灯是一种嵌入到天花板内光线下射式的照明灯具,英国BS476-21要求筒灯满足耐高温、防火低烟的条件。南京睿督公司已经协助多家企业完成BS476-21耐火测试,有着丰富的经验,具体请咨询南京睿督025-8658 3475。
BS476-21: Fire test on building materials and structures-Part 21: Method for Determination of the fire resistance of load bearing elements of construction.
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