First, super fireproof shutter door materials
(1) Steam fog steel and evaporative steam fog fire shutter
These two kinds of curtain surfaces are the same as those of single-plate steel fire shutter. The former is to add a thin-walled steel tube with a small hole in the middle of each curtain series, and add two soft rubbers at both ends of the curtain surface to connect with the thin-walled steel tube. When there is a fire, water flows into the steel pipe through the rubber hose and leaks out from the small hole. When it is heated, it evaporates, absorbs and takes away the heat from the curtain to cool it down. In the latter, a steel pipe is arranged on the back fire side of the curtain sheet, and a small hole is drilled in the steel pipe. In case of fire, water is sprayed on the curtain through small holes and flows downstream, and the curtain is cooled by endothermic evaporation. Although these two kinds of super-grade fire shutter can meet the requirements of the code, they have the following defects: ① water is injected in trickle mode, which requires a lot of fire water per unit time; (2) Small steel water pipe holes are not used at ordinary times because of their small aperture, which is easy to corrode and block after a long time, making the water spray uneven and affecting aging; (3) The rubber hose of the steam fog steel super fire shutter door is easy to age and be damaged by repeated bending. (4) There must be an independent fire pool and water supply pipe, which can meet the requirement of 0.9L water supply for 3 hours per square meter. The cost of this structure is high, so the price cost of steam fog steel super fire shutter is higher.
(2) Double-track double-curtain inorganic composite super fireproof rolling shutter door
Fire shutter belongs to double-track and double-curtain structure, and there is an air layer with a certain thickness between the two curtain surfaces. Each curtain surface consists of three layers of materials: the fire surface is a sandwich fire-resistant cloth, the back surface is a heat radiation-resistant cloth or other high-temperature resistant cloth, the middle insulation layer is a specially treated reinforced aluminum silicate fire-resistant fiber blanket, the thickness of the curtain surface is 10 ~ 20 mm, and a long thin steel strip @ 300 ~ 600mm； is horizontally arranged on the curtain surface; Stainless steel wire rope @ 1500mm, the longitudinal length of curtain surface is 2mm. In order to resist negative pressure, curtain reinforcement steel belts are set at both ends in the guide rail, and T-shaped structures are added at intervals to prevent the curtain from slipping off the guide rail due to negative pressure generated in fire.
(3) Water mist fire shutter
In recent years, a new type of fire shutter with novel concept, simple structure and obvious effect has appeared in China-"water mist fire shutter" [patent number: 9822962.5]. The shutter door consists of a single-plate steel fireproof shutter door, and one side of the transmission device is provided with a water pipe and a control system for uniformly installing water mist nozzles. It retains the advantages of single-plate steel fire shutter and uses water mist to cool the curtain surface. Within the 3-hour fire resistance limit, the temperature of the back fire surface of the curtain is below 100℃, which ensures the thermal insulation ability of the fire shutter instead of the firewall, and it is a product with strong vitality.
Second, the price
1, yongfa? Fire shutter door? Super fireproof shutter door
Company name: Hebei Yongfa Door Industry Co., Ltd.
Starting price:? 260/ m2
2. public hair? Super fireproof shutter door
Company name: Hebei Zhongfa Door Industry Co., Ltd.
Starting price:? ￥ 100? /square meter
3. Ling Ying? Super fireproof shutter door? Super fire roller
Company name: Beijing Ling Ying Technology Development Co., Ltd.
Starting price:? ￥800? /square meter
The above prices are for reference only.
The shutter door market is not only large in scale, but also has many kinds of products. According to different specific conditions, their qualification level and quality level are different. For example, the super fire shutter door mentioned in the above small series can be applied in some places with high safety technical requirements such as warehouses. In addition, Bian Xiao also suggested that consumers who intend to buy can combine professional information and shop around to make the most reasonable choice. Ensure the most satisfactory effect and advantage experience in the later period.