NFPA 288水平安装的防火门测试
日期:2020-03-26 10:13
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This standard shall apply to horizontal fire door assemblies of various materials and types of construction that are installed in openings of fire resistance- rated floor systems or roofs to retard the passage of fire.
Tests made in conformity with this test method demonstrate the performance of horizontal fire door assemblies during the test exposure; however, such tests shall not be construed as determining the suitability of horizontal fire door assemblies for use after their exposure to
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