Aluminum Spiral High Speed Door
The Spiral door offers high-speed operation for high-traffic situations and rigid aluminum slat construction that eliminates the need for a second security door. Crisp lines give the Spiral door a stylish look that's great for many types of commercial, automotive retail, government, institutional and industrial applications. The Spiral is ideal for automotive dealerships, government, parking and security. Benefits No metal-to-metal contact reduces wear on the door panel and offers fast, quiet operation.
Aluminum spiral High Speed doors are usually used wherever goods traffic occurs and where the doors have to fulfill special requirements. In the food and beverage industry, or Medical industry for example, special climatic conditions have to prevail; short opening and closing times reduce cooling loss, avoid airflow and enable a smooth operating procedure. They can also be designed in larger dimensions for the mining and aircraft industries.
Aluminum Spiral High Speed Door,Simple Hard Fast Door,High Speed Spiral Door,Metal Hard Fast Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffreezerdoor.com
First, the type of centrifugal pump according to the nature of the liquid can be transported can be divided into: (1) pumps (B type, D type, sh type) for conveying water and physical, chemical properties similar to water, cleaning liquid. (2) corrosion-resistant pump (F-type) used to transport acid, alkali and other corrosive liquids. (3) Oil pump (Y type) is used to transport petroleum products. Second, the choice of centrifugal pump (1) according to the nature of the liquid being transported and operating conditions to determine the type; (2) according to the flow (usually by the production tasks) and calculate the pressure head required in the pipeline to determine the pump model Or product catalog); (3) If the viscosity and density of the liquid to be transported differ greatly from that of water, the characteristic parameters of the pump should be calculated: flow rate, pressure head and shaft power. When choosing a centrifugal pump, there may be several types of pumps that meet the requirements of operating in the optimum range at the same time. In this case, you can determine the operating points of each pump, compare the efficiency of the operating point, the preferred choice. Centrifugal pump is characterized by liquid delivery capacity, uniform flow, but the resulting pressure is not high, and the pressure head with the flow changes.