When selecting fire shutter doors most important factor is the fire resistance of fire shutter doors. There are two methods of fire shutter fire resistance: one fire shutter in accordance with existing national standards GB7633 "fire test methods door and shutter the" resistance test fire doors, including fire back surface temperature, including the determination Conditions judgment; the second is the same fire resistance test carried out in accordance with GB7633 Taiyuan fire doors, according to the standard non-insulated metal shutter on a protective layer of unexposed surface temperature waiver provisions and product standards "steel fire shutter General technical conditions "(GB14102-93) requirements and only to a certain distance away from the unexposed surface of the radiant heat intensity and curtain side wear fire to determine whether the fire resistance of rolling shutter. According to fire back surface temperature rise does not include the fire resistance of determining conditions for non-insulated fire shutter, fire resistance of the resulting data, including the unexposed surface temperature than the fire resistance of determining conditions for thermal insulation fire shutter fire resistance to be much longer. Under normal circumstances, a large building in accordance with the provisions of the National Fire Protection Act configuration central fire control system. When a fire occurs, smoke sensors installed in the roof (the smoke) first received a smoke signal, an alarm to the central control system, the central control system after the fire by recognizing the power is turned on fire shutter fire Taiyuan wood fire in your area door, so fire shutter fire area by a certain speed downlink. When the shutter down to about 1.5 meters from the ground position Taiyuan glass fire doors, stop down, in order to facilitate evacuation and evacuation of personnel. Fire doors in the middle of the residence after a certain time, and then continue down until the close. Fire shutter doors downlink speeds and intermediate dwell time can be adjusted during installation. In some cases, the fire in the building is not equipped with a central control system, fire doors fire doors only by means of fire control electrical box fire regulations implement operating procedures fire shutter doors. In this case, when a fire, smoke sensor alarm signals received directly transmitted to fire shutter doors fire control electrical box. Taiyuan glass fire doors, fire doors, strong Sheng door industry by Wanbailin district-Sheng distribution of stainless steel products. Wanbailin district-Sheng Stainless Steel Products Distribution Division (www.sxqsmy.net) strong, credible, in Taiyuan, Shanxi metal door industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the strong Sheng door industry and you work into the brilliant, for a better future!