什么是防火门？防火等级怎么样？

各位小伙伴们，在逛的时候有没有注意到这样的一种消防设施——建筑火灾防火门、防火卷帘门。这是一种适用于建筑物较大洞口处的防火、隔热设施。它广泛应用于工业与民用建筑的防火隔断区，下面我们来认识认识它吧。

Ladies and gentlemen, have you noticed such a kind of fire protection facility - building fire doors and fire shutter doors when shopping in the mall. This is a fire prevention and thermal insulation facility applicable to large openings in buildings. It is widely used in the fire compartment of industrial and civil buildings. Let's know it.

什么是防火门

What is a fire door

（1）防火门是指在规定时间内，可以满足一定隔热要求、完整性、耐火稳定性等要求的门，这种门一般是被设置在疏散楼梯间或者是防火分区间，或者是垂直竖井间，它不仅具有一定的防火性，而且还可以防火、隔物。

(1) Fireproof door refers to the door that can meet certain thermal insulation requirements, integrity, fire resistance stability and other requirements within the specified time. This kind of door is generally set in the evacuation staircase, fire compartment, or vertical shaft. It not only has certain fire resistance, but also can fire and partition.

（2）符合规定防火等级的防火门，不仅应该具有良好的耐高温性，而且还应该具有良好的隔热性和防烟雾穿透性，并且还应该配有当火灾发生时，自动关闭的功能,，这样在一定时间内，就可以有效防止火灾蔓延，让人员有时间逃离火灾现场，起到防火、分隔的作用。

(2) The fire doors meeting the specified fire rating should not only have good heat resistance, but also have good heat insulation and smoke penetration resistance, and should also be equipped with the function of automatic closing when a fire occurs, so that within a certain period of time, it can effectively prevent the spread of fire, give people time to escape from the fire site, and play the role of fire prevention and separation.

济南防火卷帘门安装维修人员提醒您，防火门等级一般有三种，分别是、乙级、丙级，具体如下所示：

Jinan fire shutter door installation and maintenance personnel remind you that there are generally three grades of fire doors, namely Class A, Class B and Class C, as follows:

（1）防火门：高可耐火极限一般在1.5小时以上，门板材质一般为全钢板，门板中间可以加设玻璃观察窗，当火灾发生时，可以起到防止火灾扩大的作用。

(1) Class A fireproof door: the high fire endurance is generally more than 1.5 hours, the door panel is generally made of full steel plate, and the glass observation window can be added in the middle of the door panel, which can play a role in preventing the expansion of fire in case of fire.

（2）乙级防火门：高可耐火极限一般在1小时以上，门板材质也是属于全钢板，而门上可以加设一个小玻璃窗，其中玻璃应该选择使用夹胶防火玻璃或者是五毫米厚的夹丝玻璃。当火灾发生时，可以防止开口部的火灾蔓延开来。此外，性能好的木材质和钢材质的防火门同样可以达到乙级防火门级别。

(2) Class B fireproof door: the high fire resistance limit is generally more than 1 hour, and the door panel material is also full steel plate, and a small glass window can be added to the door. The glass should be laminated fireproof glass or 5mm thick laminated glass. When a fire occurs, the fire at the opening can be prevented from spreading. In addition, fire doors made of wood and steel with good performance can also reach the level of Class B fire doors.

（3）丙级防火门：高可耐火极限一般在0.5小时以上，门板材质也是属于全钢板，门上可加设小玻璃窗，玻璃可选择使用五毫米厚的夹丝玻璃，大多数的木质防火门都可以达到这个级别。

(3) Class C fireproof door: the fire resistance limit is generally more than 0.5 hours, and the door panel is also made of full steel plate. Small glass windows can be added to the door. The glass can choose to use 5mm thick wire glass. Most wooden fireproof doors can reach this level.

防火卷帘门广泛应用于工业与民用建筑的防火隔断区，能有效地阻止火势蔓延，保障生命财产，是现代建筑中不可或缺的防火设施。更多相关问题或者需求就来咨询我们http://www.jnyuqilin.com吧！

Fire-resistant rolling shutter doors are widely used in the fire compartment of industrial and civil buildings, which can effectively prevent the spread of fire and ensure the safety of life and property, and are indispensable fire prevention facilities in modern buildings. Consult us for more relevant questions or needs http://www.jnyuqilin.com Come on!