Usually, the fast door is installed to deal with the fixed surfaces on both sides of the ventilation hole. However, in areas with limited indoor space, although the suspension plate guide plate can be installed in the ventilation hole, this will endanger the aspect ratio of the opening.

 

Usually, the fast door is installed to deal with the fixed surface on both sides of the ventilation hole. However, in areas with limited indoor space, although the suspension plate guide plate can be installed in the ventilation hole, it will endanger the aspect ratio of the opening.
Door curtains are mostly composed of single-sided 75mm cryogenic crimped steel slats, which are installed horizontally. All of them are self-locking and interlocked by strange parts, so that the finished cloth curtain is "turned over" tightly around the steel cylinder fixed on the clear opening. The thickness (thin thickness) of each Lu plate is selected to blend in the daily wind load of the door width.
The polyester or steel fixed splint (end lock) is fixed on the pre-left board to prevent the separate board from sliding over. The stiffness of the bottom end slide shows compressive strength, and is produced by a part of the steel chain 'T', the angle of view or a part of the housing (if necessary) to maintain a small side offset. The curtain fabric operates on vertical rails made of thick gauge type hot dip galvanized "U" steel. Low steel drum, when the door is in the open position, can be rolled down the curtain fabric.
The slide rail is fixed on the overweight steel angle by standard parts, and is installed on the forming opening of steel, brick, concrete and even wood.
Rapid shutter door profit reduction caused by the reason of rapid door profit reduction:
1, raw materials rise. With the country's increasingly stringent environmental protection regulations, some companies have stopped work or reduced production, resulting in a surge in raw materials for stainless steel plates and aluminum alloy profiles. The sales market of metal composite materials has already encountered the trend of rising prices. 2, freight logistics rose. Not long ago, the traffic control department carried out a new round of strict investigation on overweight cars, which got rid of many inside stories about reducing costs based on overweight. The original unit price of freight rose by 33.6 per cent, plus relative taxes and fees, and the transportation cost rose by at least another 35 per cent. 3, employee wages increased. The wage cost of employees is rising by 10%-15%. In today's shortage of human capital and soaring prices, the labor wage continues to rise. Technically good employees will basically increase by 15% and a large number.
4, fast door company way. Some fast door companies have limited ability to control the sales market. First, they do not have an effective commodity management system, and second, they do not know how to develop the sales market. They would rather break free in areas with severe situations, prompting them to concentrate on marketing and promoting basic commodities for a long time, but there is not a high-profit commodity from beginning to end.

Key words:Qingdao fast door; Qingdao Industrial Lift Gate