ASTM A283 plates API 650 ground supported liquid storage tanks
The manufacturing requirements of bottom plate of vertical metal tank, API 650 ground supported liquid storage tanks are as follows: 1. In order to compensate welding shrinkage, the layout diameter of tank bottom is 5-2mm than the design diameter; 2. The butt joint of edge plate of tank bottom shall be machined automatically or semi-automatically; 3. The distance between any two adjacent welding joints on the tank bottom plate and the distance between the butt joint of edge plate and the longitudinal weld of bottom ring wall plate shall not be greater than 200 mm.
Under the same sealing effect, the internal floating roof tank of API 650 oil storage tank can further reduce the evaporation loss compared with the API 650 ground supported liquid storage tanks External floating roof tank. This is due to the shielding of the fixed roof and the gas layer between the fixed roof and the internal floating plate, which has more significant heat insulation effect than the double disc floating roof of the API 650 ground supported liquid storage tanks external floating roof tank. =====API 650 tank has the advantages of less load on the floating plate, simple and light structure, and can save the central drainage pipe and rotating floating ladder on the API 650 ground supported liquid storage tanks floating plate. The materials for easy construction and maintenance and sealing parts can avoid aging due to sunlight.
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