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.

   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. 

    Thermal insulation ratio:   4.5W/m. h.

    For this reason, such door is widely seen in cold rooms and warehouses. 

   Flexible design to fit all project sites

     The door can climb up in different ways to fit specific site situation.   

• Standard lift: For limited top space, the door will turn to the ceiling directly;

• High lift:  The door can climb up the wall for some distance and then turn to the ceiling; 

• Vertical lift: If the ceiling is high enough, the best way is to climb up

  complete to the top.