First of all, we must know the weight of the door piece. The weight of the door piece of different materials is definitely different. We assume here that the thickness of the door piece is 0.476mm per square 6KG,0.426mm per square 5KG, and 0.376mm per square 4KG. The width of the door piece of the rolling shutter door is based on the width of the door opening plus 10cm, the height of the door piece is based on the height plus 50cm, and the length of the spring is calculated by 1.3.

First of all, we must know the weight of the door piece. The weight of the door piece of different materials is definitely different. We assume here: the thickness of the door piece is 0.476mm per square 6KG,0.426mm per square 5KG, and 0.376mm per square 4KG. The width of the door piece of the rolling shutter door is based on the width of the door opening plus 10cm, the height of the door piece is based on the height plus 50cm, and the length of the length of the 1.3.
Spring bearing weight: 5cm spring = 20KG, 4cm spring = 15KG, 3.5cm spring = 12.5KG, 3cm spring = 10KG.
For example:
1. The thickness of the door is 0.426, the width of the door is 3 meters, the height is 3 meters = 9 square meters, and 9X5=45KG. Then this door can use 3 springs of 4cm.
2. The thickness of the door sheet is 0.376, 9x 4=36KG. This door can use 3 3.5cm springs.
Spring length 3 m x1,3=3.9 m.
How to install the rolling shutter door spring is as follows:
Step 1: Prepare for the Work
1. Materials: special fixtures, scraping, powder wire bags, impact electric drills, hand electric drills, electric welding machines, cutting machines, screws, hammers, wire drops, level rulers, etc.
2. Tools: center column, upper cover, reel, blade and guide rail.
Rolling door installation step two: start to install rolling door spring
1, determine the location to install the shutter door, and use the line drop, level and other tools to mark, find the horizontal and vertical lines.
2, according to the line began to install the rolling door frame.
3. According to the method steps and precautions suggested by the manual of the rolling door machine, the installation of the rolling door machine is carried out.
4. Fix the assembled rolling shutter door body, then install the stopper in the correct position and try to run it.
5. Install slideway, manual mechanism and packing box.
Rolling shutter door installation step three: inspection results
1. Carry out debugging and operation to ensure that each function and equipment is in good condition.
2, all the installation and inspection is completed, the installation of the shutter door is completed, and then you can use it normally.

Key words:Qingdao fast door; Qingdao Industrial Lift Gate