BS 476 Part 7:1997+AC: 2014 Fire tests on building materials and structures-Part 7 method of test to determine the classification of the surface spread of flame of products.
BS 476 Part 7:1997+AC: 2014 建筑材料和结构的着火试验-第7部分:产品火焰表面延伸等级确定的测试方法。BS 476-7:1997+AC:2014防火阻燃等级共划分为四个等级:class1, class2, class3, class4。南京睿督公司分享BS476-7测试具体内容,咨询电话:025-8658 3475。