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180ft diameter API 620 cylindrical oil storage tanks

180ft diameter API 620 cylindrical oil storage tanks

180ft diameter API 620 cylindrical oil storage tanks

The API 620 cylindrical oil storage tanks outer tank, which is not in contact with the vaporized liquefied gas, may be of single-welded lap or single-welded butt construction when the thickness does not exceed 3/8 in.; at any thickness, the API 620 oil tank outer tank may be of double- welded butt construction without necessarily having full fusion and penetration. Single-welded joints shall be welded from the outside to prevent corrosion and the entrance of moisture.

API 650 storage tank, double-layer oil tank environmental protection advantages: ordinary single-layer steel API 620 cylindrical oil storage tanks oil tank is corroded by underground water and gas and electrolytic corrosion because it is buried underground all year round. The API 650 tank has a double-layer structure with a gap of 0.1 mm. The API 620 cylindrical oil storage tanks outer layer of FRP ensures that the leakage will not directly leak into the soil and water source.

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Corrosion of the API 620 cylindrical oil storage tanks body caused by external conditions such as high temperature, rain, humidity, or inadequate anti-corrosion measures of the oil storage tank itself, the water-bearing deposits in the oil storage tank caused corrosion and perforation of the inner surface of the oil storage tank bottom plate. Defects fatigue cracks caused by stress, with the accumulation of time, the compressive strength of the API 620 cylindrical oil storage tanks body decreases and corrosion cracks occur.

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