EN 13501-5:2005+A1:2009 Fire classification of construction products and building elements - Part 5 Classification using data from external fire exposure to roofs tests 屋顶外部着火的燃烧等级测试
BS 476-3:2004 Extermal Fire Exposure roof test 屋顶测试
EN 13501-5:2005+A1:2009 Fire classification of construction products and building elements - Part 5 Classification using data from external fire exposure to roofs tests 屋顶外部着火的燃烧等级测试
BS 476-3:2004 Extermal Fire Exposure roof test 屋顶测试