·The door body adopts hidden frame design: the door panel built-in frame is hot-dip galvanized steel plate, formed by special cold bending equipment, U-shaped special built-in frame, covered with 0.6mm-1.0mm galvanized color plate or aluminum plate on both sides, and foamed as a whole.
. The door body is stronger, and the door panel thickness is 55mm and 75mm.
·Multi-leaf structure door body, when the door body does not need to be fully opened, part of the door body is allowed to be opened to reduce the switching time and heat loss.
·The top and bottom of the door body are sealed with high-density double-layer brushes, and the door frame and each door panel are sealed with EPDM rubber.
·The top guide rail is directly installed on the side wall or fixed on the wall with a 4mm thick steel plate, and the thickness of the fixing is not less than 4mm.
·The bottom diversion channel is a 2mm thick aluminum alloy or steel guide groove with a small angle waterproof slope (or more special designs), and the single-side folding is standard for more than four folds, and two folds are optional. ·The door panel and hinge are connected by embedded rivet nuts or embedded steel plates, and all the connection hardware on the door body are embedded rivet nuts. ·The top rail is a 75"85"3mm steel rail or a 5mm thick aluminum alloy rail, and the single-side folding is a 4mm galvanized steel plate molded rail for more than four folds. . The hanging wheel is made of closed bearings and PA66 nylon, with a special design of four wheels in a group to increase strength and smoothness. ·Configuration range: The maximum standard width of a single leaf is 1190mm, the minimum width is 650mm, and the maximum single leaf custom value of special width is 1500mm; the plate thickness of 55mm is suitable for the door body height within 8000mm; the plate thickness of 75mm is suitable for the door body height above 8000mm, and the maximum single block height is 13000mm.