Are fire doors can open in both directions, fire doors Tianrong manufacturers, fire doors

 Have access fire doors, interior fire doors, fire-proof doors, quick locking fire doors, fire doors opened quickly in case of fire, etc; the current problems of fire doors fire doors normally closed: Normally closed fire door in addition to having the necessary external fire performance also requires automatic shut off function and sequence. These support functions must not be ignored, otherwise, will leave a lot of hidden dangers. At present, the vast majority of our country for such use of fire doors, the main reason is simply that all parts used in construction machinery products are easy fabrication and installation of fire door core door manufacturers, and low construction costs. However, there are many fire doors normally closed disadvantages: (1) evacuation corridors, stairwells and front room of fire doors, use normally closed to normal traffic causing unnecessary trouble. In order to facilitate access to a lot of places, most of all the doors open. (2) Because usually people often walk around the place, larger flow of people here, the door frequently open fire doors, fire doors and hardware is bound to occur frequently damaged parts of the phenomenon, especially behind closed doors, accidentally, once opened angle greater than the angle range to use during installation, door closers will not exercise its automatic shutdown feature. (3) acceptance when delivered, closers tend to just close the debug state, but, once ignited, generating hot air expands the impact of double-leaf fire door orderly shutdown, fire doors on both sides there is a certain pressure difference Adjust good fire door closers difficult to achieve reliable off. Thus, the fireworks will enter the common room before firefighters were unable to enter the room before the fire rescue fire doors B and C class distinction between the use of enclosed stairs to escape it becomes less secure, and so on. Normally open fire doors: the specification of the normally open fire doors continuous use of the three "should" word, strictly emphasizes the normally open fire doors on the basis of normally closed fire doors on the addition of a signal feedback. Also, you must have these three basic functions, are indispensable. Currently, the market most of the lack of reliable fire doors "self-close" and "signal feedback" function, multiple fire cases have been confirmed, can not be reliable because of fire doors closed, resulting in the spread of the fire can not be effectively cut off fireworks, a large number of toxic Smoke rampant, resulting in considerable staff suffocation, painful lesson. Are fire doors can open in both directions, fire doors Tianrong manufacturers, fire door fire provided by Zhengzhou Tian Rong Door. Zhengzhou Tian Rong Fire Door (www.hntianrong.com) is Zhengzhou, fire-resistant, fire prevention materials leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the days leading wing fire doors with the staff warmly welcome all inquiries negotiations to create Tianrong fire doors a better future.