Steel plate for roofs of API standard 650 anchored liquid-storage tanks
The standard API 650 covers the design and calculation of different parts of the API standard 650 anchored liquid-storage tanks fuel tank. This specification is based on the knowledge and experience of buyers, manufacturers and users of API 650 welded storage tanks of different sizes and capacities. It is worth noting that the code requirements are minimal; stricter standards can be adopted for specific applications.
The API 620 large storage tank nozzle neck is fabricated by welding from 1/2-in. plate. The materials in the tank wall, the nozzle neck, and the reinforcing pad conform to ASTM A442 Grade 55. The main joints in the tank wall are fully radiographed, double-welded butt joints. The longitudinal joint in the nozzle neck is of the same type API standard 650 anchored liquid-storage tanks but is not radiographed; however, the longitudinal joint and all other parts of the nozzle-and-wall-plate assembly have been shop stress relieved after fabrication, as required by 5.25. The adequacy of the reinforcement and attachment welds shown in Figure F-6 shall be determined.
Large-scale vertical API standard 650 anchored liquid-storage tanks mostly use internal tank bottom heating coils to heat the medium stored in the storage tanks. The heating coils are mostly smooth tube structures arranged in an annular circle along the bottom of the API standard 650 anchored liquid-storage tanks. Commonly used heating methods include hot oil circulation heating method and hot water steam circulation heating method. The hot oil circulation heating method is to continuously extract part of the liquid medium from the storage tank, and then return it to the container to mix with the medium in the tank after heating, and the heat is quickly transferred through mechanical stirring.
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Our company will accept the product quality objection registration record, pass it to the API standard 650 anchored liquid-storage tanks production unit and relevant departments, and timely coordinate the supervision of product API standard 650 anchored liquid-storage tanks quality objection. Our company coordinates the relevant department personnel to the customer unit to carry on the investigation, the processing.
