CSA G40.21 grade 44W plates API Std 650 anchored liquid-storage tanks
API 650 external floating roof storage tanks are generally called external floating roof API Std 650 anchored liquid-storage tanks tanks, which means that the storage tanks are externally open tanks without a dome design, and are equipped with vertical floating roofs. API 650 external floating roof storage tanks are usually used for large More than 20,000 cubic meters of open steel API Std 650 anchored liquid-storage tanks storage tanks for storing volatile petroleum products such as crude oil, gasoline, kerosene, etc.
In this project, an area of tank wall is constructed of ASTM A285, Grade C, steel plate that is 5/8-in. thick and has spot-radiographed, double-welded butt joints. The wall is subject to tension in a meridional direction and to compression in a latitudinal direction. The values of R1 and R2 at the point under consideration are 75 in. and 300 in. respectively. A corrosion allowance of 1/16 in. is required. The computed (meridional) tensile stress, stc, in the net thickness after deduction of the corrosion allowance is 6000 lbf/in.2. The problem in this example is to find the maximum allowable (latitudinal) compressive stress value for the given conditions, in conformance with the provisions of API 620 tank standard 5.5.4.5.
Under the condition of static storage without receiving and sending operation, the temperature of gas space, evaporation rate, depth and pressure of vapor in the API Std 650 anchored liquid-storage tanks will change with the change of temperature and pressure in a day. The oil loss caused by the process of discharging oil vapor and inhaling air gas is called "small breathing" loss, which is also called static storage loss of oil tanks.
Based on the principle of “sincerity and win-win cooperation”, our company keeps forging ahead. In the fierce market competition, we have won the trust and rapid development of our customers with good cooperation and sincere service spirit. With pioneering spirit, the pursuit of excellence, continuous learning, and never satisfied content, we will create a win-win situation with our customers to create a better future. The company has sufficient inventory and complete varieties and specifications.
The company's headquarters has a well-established logistics distribution system, which can quickly transport the steel materials to the port through the contracted logistics companies. Professional contracted logistics companies can significantly reduce costs and various commodity-related expenses. Meanwhile, the flexible transfer ensures that the API Std 650 anchored liquid-storage tanks steel materials can be shipped immediately after passing the quality inspection.
To provide customers with the most satisfactory service and realize the win-win of economic and social benefits, our company promises to provide excellent API Std 650 anchored liquid-storage tanks products in this bidding, and in line with the attitude of being serious and responsible to customers, before sending goods to users, the API Std 650 anchored liquid-storage tanks technical personnel shall confirm that there is no fault in the equipment before sending goods to users, and then send goods and products to users, and formulate the following service terms.
