The sectional door can be up to 10 meters high and 8 meters wide, which can satisfy most factories with large door openings. At this time, the customer will have a question, is such a large sectional door safe? Let me give you an introduction.

The larger the size of the sectional door, the lower the wind resistance. At this time, you can choose a door panel with a large back rib to enhance the wind resistance. Secondly, the torsion spring balance system is also necessary. If the door opening is too large, it is necessary to add torsion springs to reduce the load of the door panel on the motor. Conventionally, there are two torsion springs. It is recommended to add two more torsion springs for large sizes to ensure the safety of the sectional door during operation.

The height of a single door panel of the sectional door is 50 cm. If it reaches a height of 10 meters, 20 door panels are required. It is conceivable that the weight of the entire door panel is too large. At this time, a particularly important safety device is needed - steel wire rope Anti-fall device to ensure safety. Under long-term use, the wire rope will inevitably break, the device will trigger the protection, and the door will be stuck and will not fall. If there is no such device, the whole door panel will be smashed down, damage the door body, and even cause casualties. Many cheap sectional doors will reduce this device. The reason is that the cost is too high and there is no profit.

At the same time, the sectional door is equipped with an airbag as standard. When it touches an object, it will stop running immediately and open in the opposite direction, which increases the safety during use. This is also a device that sectionals the cost of the door, and is often omitted by some cheap manufacturers.

Sectional doors are actually very safe, but cheap sectional doors are often unsafe, which is why many customers have frequent problems after buying cheap sectional doors, and the after-sales service is not timely. It's not cheap."