Gian fire doors

 Gian fire doors --- Shenzhen Industrial Co., Ltd. proficient fire doors complete documents, priced at direct sales, installation of train Shenzhen fire doors, steel fire doors Shenzhen, Shenzhen glass fire doors, fire doors Class Shenzhen, the Shenzhen B fire doors , Mobile: 13728894133 Mobile: 13556866654 Contact: Miss first wide web site: http: //www.sztx88.com Website: http: //a13556866654.b2b168.com Free Phone: 4008884513 E-mail: 2540559416@qq.com Address: Bao'an District of Shenzhen City Industrial Park, moderate Gian Huangmabu fire door steel fire door prices, but its self-important, open style than the laborious and monotonous, not beautiful, so much for the quality of industrial buildings and general civil construction, or building on the beautiful low demand, usually a small portion of the flow of people (such as room, garage, etc.); in contrast, light weight wooden fire door, open and close flexible and can look decorative, pattern more, but the price is higher, and more for the high-grade civil or building important occasions. Usually every fire door jamb applicable maximum hole size of about: high 3.3m, width - single-leaf 1. Dual fan 3.0m. Engineering design, except for a strict set of fire doors in accordance with the regulatory requirements of the occasion, location, width, grade and opening direction, there should be noted: (1) the impact of the width of doors for evacuation fire doors are generally located on the evacuation route (eg stairwells, front room, corridors, etc.), architecture design detail flat little carelessness could result in blocking the door open after evacuation path, reducing its effective width, in violation of the basic requirements for evacuation. The turning point in the evacuation path and high-rise housing in this phenomenon is particularly prominent, attention should be paid, to be avoided. (2) leading to the evacuation port adjacent partition problems under certain conditions, when the fire district has access to the adjacent Class A fire doors, high-rise buildings allows each partition just one safe exit. It should be noted that, due to the fire door open only one-way, if two adjacent partitions are only a safe exit, the door frames should be divided into two fire doors and turn on the firewall to both sides, respectively, in order to meet between two partitions another evacuation needs. (3) Select the hoist way of the most commonly used is normally closed fire doors, the doors it has been in a closed state, when staff manually opened through the doors shut on their own; if push latch hardware installation is more conducive to speed up the evacuation speed. However, public access provided in the normally closed fire doors there are shortcomings usually affect the use of ventilation and lighting, blocking the line of sight, traffic inconvenience, such as poor management, opening and closing its door closers and hardware are often destroyed, failure, cause safety problems . In recent years often open fire doors just to solve the above problems, it's usually fixed door leaf is fixed in the open position, the door is automatically released when you set fire to restore and normally closed fire doors of the same function. Due to increased fixed and automatic door release system, sometimes with automatic alarm system linkage, normally-open fire doors is bound to increase the project cost. Current fire codes did not fire doors open and close in what way as mandatory, by the designer considering the standard building height, using the occasion of the characteristics of the user's building management needs and economic factors to select OK. Gian fire doors