Sectional door

steelgalvanised steelautomatic

Sectional Door Industrial Overhead Sectional Doors Mostly widely used doors in all indsutrial buidlings like factory or warehouse. Thermal insulated, fast speed, high frequency running, low maintenance. Fast opening and closing Running speed comparation: Sectional door: 0.3m/s; Traditonal roller shutter door: 0.06-0.08m/s; So, sectional doors are four times the speed of a tradtional roller shutter door. It opens and closed much faster. This bring several big benefits: • Improve work efficiency: Workers or forklifts will no need wait long time in front of the door. The material handling speed is higher by at least 3 times than tradional roll up doors; • Keep clean and hygiene: The fast running reduces the open time to only seconds in a cycle of passing the door. Thus much less outside air and dust will enter the room; • Keep temperature: Heat loss is reduced by large by reducing open time. High frequency working There is torsion spring balance system around the drive rod. After spring tightened, it can balance the weight of the door body and reduce the load weight of the motor. So its drive motor is always in a light-load work state. This is the reason why such doors can work continually. No need worry its motor will overload and get burnt. Max work frequency: 800 open-close cycles per day. Thermal insulated Door panel is sandwich structure. Total thickness: 40mm. Two surface layer is 0.326mm galvanized steel plate. Middle is filled with high density fire ratardant polyurethane foam. Foam Density: 12---14kg/m2. At the joint area, there is a special cold-bridge design, to avoid direct heat conduction through surface steel sheet.