Here we share one article about the metal rolling shutter machine-double rolling shutter machine. As to the double roller shutter slat means the slats roll formed from galvanized steel or colour steel without PU insulation. The raw materials are typically 0.6-1.2mm GI steel or PPGI steel. There are so many different sizes of metal rolling shutter  that it’s not possible to list all roll formers. Generally, one regular metal rolling shutter machine can make only one slats, with punching holes optional.

n whatever corner on the earth, developed countries, developing counties or undeveloped countries, rolling shutter doors are everywhere. However, not everybody uses the same roller shutter doors. For example, in developed countries, people prefer PU insulated rolling shutter door for Shop, Garage, Warehouse and even office buildings etc. But in other areas, we may see rolling shutter doors joint with single steel slats or just panels. Overall, any country in the world may use different rolling shutters, buy they all use rolling shutters. So all ove the whole world, there are many types rolling shutter profiles, here I list some of them for your reference: