DIN EN 13501-3-2010 施工产品和建筑部件的燃烧性能分类.第3部分:对建筑服务设施中使用的产品和部件的耐火试验数据进行分类:耐火管和防火挡板.德文版本EN 13501-3-2005+A1-2009
Fire classification of construction products and building elements - Part 3: Classification using data from fire resistance tests on products and elements used in building service installations: fire resisting ducts and fire dampers; German version EN 135
This European Standard specifies the procedure for classification of the resistance to fire performance of construction products and building elements used as components of building service installations.