防火门是指在一定时间内能满足耐火稳定性、完整性和隔热性要求的门。它是设在防火分区间、疏散楼梯间、垂直竖井等具有一定耐火性的防火分隔物。由门框、门扇及五金配件等组成，具有一定耐火性能的门组件。所述的门组件中，还可以包括门框上面的亮窗、门扇中的视窗以及各种防火密封件等辅助材料。[来源：国准GB/T 5907.5-2015,2.14.1.1]pedestrian doorset or industrial type doorset including any frame or guide, door leaf or leaves, rolling or folding curtain, etc., which is provided to give a fire resisting capability when used for the closing of permanent openings in fire resisting separating elements, which includes any side panel(s), flush over panel(s), transom panel(s) and/or glazing together with the building hardware and any seals (whether provided for the purpose of fire resistance or smoke control or for other purposes such as draught or acoustics) which form the assembly.[来源：欧标BS EN 1634-1:2014,3.1]doorset which, as installed in a building, is intended when closed to resist the passage of fire and is capable of meeting specified performance criteria.[来源：英标BS 4422:2005, 3.325]Any combination of a fire door, a frame, hardware, and other accessories that together provide a specific degree of fire protection to the opening.[来源：美标NFPA 80 2019, 3.3.50]
咨询
