防火门针对维护大家的人身及资产起到了重要的功效，还给我们的生活即增添了便捷，钢制防火卷帘门是防火门的一种，这是有片式通用型和双片复合性之分的，那么他们有何不同呢？其主要表现在一些结构上，一同来掌握：
Fireproof doors play an important role in maintaining people's lives and assets, and also add convenience to our lives. Steel fire-proof rolling shutter doors are a type of fire-proof door, which can be divided into two types: sheet universal and double sheet composite. So what is the difference between them? It mainly manifests in some structural aspects, which can be mastered together:
钢质片式防火卷帘：
Steel sheet fireproof roller shutter:
它属于通用型的，关键是由防火的滑轨、电机、秘药、控制柜、卷帘门板、小五金等构成的垂直升降的卷帘门，并可配制与烟感、感温预警系统联动控制，其特性和品质均达到标准的，耐火时间在两小时以上不会丧失其完整性；
It belongs to a universal type, and the key is a vertical lifting rolling shutter door composed of fireproof sliding rails, motors, secret drugs, control cabinets, rolling shutter door panels, hardware, etc. It can be configured to be controlled in conjunction with smoke and temperature warning systems. Its characteristics and quality meet the standards, and its integrity will not be lost after a fire resistance time of more than two hours;
钢质双片防火卷帘：
Steel double sheet fireproof roller shutter:
它属于复合型的，关键是由防火的滑轨、电机、秘药、控制柜、主帘板、辅助板构成D型帘板、小五金、空心填有不燃隔防火保护材料，不需要水帘维护，相比其钢度更强、耐火时间更久，其特性和品质均达到标准的，耐火时间在三小时以上也不会丧失其完整性；
It belongs to the composite type, which is composed of fireproof sliding rails, motors, secret medicine, control cabinets, main curtain panels, and auxiliary panels, forming a D-shaped curtain panel. The hardware is hollow and filled with non combustible fireproof protective materials, without the need for water curtain maintenance. Compared to its stronger rigidity and longer fire resistance time, its characteristics and quality meet the standards, and its integrity will not be lost even if the fire resistance time is more than three hours;