Fire shutter doors are suitable for building a large hole at the fire, heat insulation products in the design and installation of technology has played a certain role. Shanghai Heng fire shutter door industry is widely used in industrial and civil buildings fire cut off areas, can effectively prevent the fire from spreading Luliang fire shutter doors, to protect life and property safety, is indispensable to modern building fire safety. Fire shutter doors area calculations should be performed in accordance with national building engineering fields standards. Calculated as :( fire shutter door opening height + 600mm) × (roller shutter door entrance width + 200mm) Note :( hole underneath the beam height to hair ground, rails need embedded) package box and lintel area calculation for :( hole width) × (underside + facade) to expand the computing area. After doing measuring the height of the roof to keep the distance of 30cm spacing. Fire shutter doors are fire doors dimensions, which will be the basis of the steel shutter on the drive components transformation, with fire appliances and other equipment, in order to achieve fire effects: fire the motor by fire electrical control box controlled by the transmission driving the reel so that the shutter doors from closed, power outages can also be used to manually crank the fire on the motor can be achieved manually. In the relative motion of the mechanical, instead of using coupling sprocket, rail friction inlaid copper or nylon. Best suited for use or storage of flammable gas, and other volatile chemicals and other items with high pyrophoric factories and warehouses or may occur fire explosion hazardous environments. Datong fire shutter doors | door industry strong Sheng | fire shutter doors provide strong sung by Wanbailin area distribution of stainless steel products. Wanbailin district-Sheng Stainless Steel Products Distribution Division (www.sxqsmy.net) quality services and products, and are subject to approval and trust of new and old customers and the industry. Our company is a certified member of the whole network Commercial Union, Commercial Union Support icon on the page, you can talk directly to our customer service staff, to our future cooperation happy!