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众所周知,高层建筑发生火灾后,及早报警和及时有效地控制火灾是至关重要的。而要做到这一点,高层建筑的竖向管井的检查门和其他一些部门的门必须使用防火门,这样才能在一定时间内阻止火势蔓延扩大,争取宝贵的分分秒秒,为灭火打下基础。随着现代科技的发展,一种在规定时间内能阻燃的木质防火门在上海木材一厂诞生了。据国家固定灭火系统和耐火构件质量监督检验
It is well-known that early warning and timely and effective fire control in high-rise buildings after a fire is of the utmost importance. To do this, high-rise vertical pipe inspection doors and other departments of the door must use a fire door, so as to prevent the spread of fire spread within a certain period of time, strive for precious minutes and seconds to lay the foundation for fire fighting . With the development of modern science and technology, a kind of wooden fireproof door that can resist fire within the stipulated time was born in Shanghai Timber Factory. According to the national fixed fire extinguishing system and quality supervision and inspection components