1. Its outside panel is colour steel sheet or hot-dip galvanized steel sheet, its strength is hig and it will not rusty.
2. Thickness of the door section is 40-50mm,
3. The structure of door section is steel/polyurethane/steel, its insulation performance is excellent, heat insulation coefficient is high: R=16. 04.
4. Bottom of model U resistant, the encapsulation is good. It adapts to slight uneven ground, and it can stops rain and wind invading;
5. All the metal fasteners are made of hot-dip galvanized steel plates, their strength is high, and they do not rust.
6. It has iol tenpering treatment and strong torsion spring, the cycle of using is over 100,000 times;
7. Its motor is side installed or middle installed, and it has three control types: Remote control, switch control, and manual control;
8. Glass window is made of toughened glass or carbonic acid ployester(bullet proof glass), it has good light permeability and strength.
9. It has advanced IR protective devices and gas inductance protective device. |
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