供应BS 476 防火测试
re Tests on Building Materials and Structures Part 15: Method of Measuring the Rate of Heat Release of Products
BS 476-20：建筑材料和构件的防火测试.第20部分:建筑构件耐火的测试方法(一般原理)
BS 476-20：Fire Tests on Building Materials and Structures Part 20: Method for Determination of the Fire Resistance of Elements of Construction (General Principles)
BS 476-21：建筑材料和构件的防火测试.第21部分:承重构件耐火的测试方法
BS 476-21：Fire Tests on Building Materials and Structures Part 21: Methods for Deter
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