DIN EN 13501-4:2016 施工产品和建筑部件燃烧性能分类.第4部分:烟控制系统构件耐火性试验用数据分类.德文版本EN 13501-4-2016
Fire classification of construction products and building elements - Part 4: Classification using data from fire resistance tests on components of smoke control systems; German version EN 13501-4:2016