Jiangxi Nanchang fire door manufacturers, Nanchang B wood fire doors prices, Nanchang B steel fire door sale, Nanchang fire shutter door manufacturers

Electronic fire doors, fire door closers built multifunction fire doors; press turned into fire doors normally closed and normally open fire doors. Normally closed fire doors generally consists of fire doors, door frames, door closers, seals and other components, double fan or fan normally closed fire door is also equipped with the sequencer. Normally closed fire doors do not usually need to provide professional electrical automation design, but also some special situations such as: evacuation normally closed fire doors on the channel, by electrical engineering with the design when some large construction side has requested the management of security and so on, to make may reduce overall security risk. For normally open fire doors, which is in addition to a normally closed fire doors all the accessories, we also need to increase fire door release switch, and must be provided by the electrical engineering design automation. Usually applies to the logistics flow more evacuation routes. Insulation in Nanchang City in Jiangxi fire door manufacturers, Nanchang B wood fire doors prices, Nanchang B steel fire door sale, Nanchang factory fire shutter doors fire door (A class) fully insulated doorsets within the specified time, it could also meet fire integrity and insulation requirements of the fire doors. Part of the fire door (Class B) partially insulated doorsets or greater within the prescribed 0.50 h, fire doors to meet fire integrity and insulation requirements. Non-insulated fire doors (class C) no insulated doorsets within the stipulated time, to meet the requirements of fire integrity of fire doors. 5 The main difference editor Gian fire doors, fire doors Gian phone manufacturers, Gian fire doors sold price, Gian Pingxiang customized fire doors, fire doors installed Ji'an, Ji'an distinguish fire doors and fire doors security door factory that main function is to tamper security door sealed performance is good, generally do not have the keys after closing the door can not open the door, the door is not fireproof filler material. Security doors must have "FAM" logo, and with reference to anti-theft security door general technical conditions GB17565-2007. Although the fire door is made of steel but the inner door panel is filled with fireproof materials, steel door thickness also have different requirements. Steel doors steel doors is common, it also has some security features but Tamper relatively poor performance, general street plants are in this category. Only Shanghai and Chengdu have local standards of fire security doors, fire doors factory in Nanchang, Jiangxi, Nanchang B wooden fire door prices, the sale of Nanchang B steel fire door, the hole-scale Nanchang factory fire shutter doors wood fire doors, the layout of the scale should fit GB 5824 "construction window and door openings scale series" rule. Fire doors is a skill plywood door, the best is to use coniferous species of wood raw materials, plywood, urea-formaldehyde resins generally use five plywood, its appearance and general skills plywood door almost, but higher demand for materials fireproof doors. Fire doors of wood used (including plywood) is very important to control the moisture content, which enables the door adhere to proper gap, normal operation and does not crack, along with fire-retardant wood subject to disposal can put to use. Steel fire door core material for filling fire doors fireproof function decisive effect, should have small thermal conductivity, low bulk density, and other characteristics of good processing function, help to improve door fire rating = reduce the weight of the door, to eliminate or reduce The initial deformation of wooden doors (off angle, warping). Selection 32VL retardant materials fire doors, fire-resistant time it reaches the 68min, 54min of B greatly exceeded the norm, and has been near to the Class A specification 72min. Fire doors of the hardware (hinges, latches, locks, door closers, handles, etc.) use is important, it is necessary to deploy properly, to stand the detection of a fire.