1. Capacity: 3 tons
2. Material: #45 steel
3. Motor drived: China brand 3 KW. 380V, 60HZ
4. Inner diameter: 410~ 580mm
Main roll former
1. Stations: 36
2. Rollers material: CR15; HRC 60. Chrome coated: 0.03mm. The Strength in Mpa: 70 TON,800 MPA
3. Shaft material: Diameter: 70mm, material is #45 steel. Quenched: hot treatment. The strength of the Main Shaft in Mpa:70 tons, 650MPA
4. Bearing brand: FAG Germany
5. Main Motor:  11KW, China top brand, 380V, 60HZ
6. H Beam 500 mm with precision welded

Roller shutter door  is a type of door or window  consisting of many horizontal strip (or sometimes bars or web systems) hinged together. The door is raised to open it and lowered to close it. On large doors, the action may be motorized. It provides protection against wind and rain. In shutter form, it is used in front of a window and protects the window from vandalism and burglary attempts.
Roller shutter Door have many applications, including doors for vans, garages, kitchens, schools, prisons and warehouses. In some parts of the world, roller shutters door are subsidized by local governments  due to the inherent security benefits. In areas that are frequently exposed to inclement weather, roller shutters are used as a method of insulation and can protect windows against hail damage.

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