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API620 low-pressure oil tank convex fillet weld

API620 low-pressure oil tank convex fillet weld

API620 low-pressure oil tank convex fillet weld

API 650 can store oil, gas, chemical, water and biofuel for some of the most common tanks in the oil industry. API 650 can store contents at a lower pressure (maximum of 2 PSI) but at much higher temperature (-40 degrees F to 500 degrees F) than the standards of API620 low-pressure oil tank. It can be any tank size.

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The specifications used in the design of large oil tanks, API620 low-pressure oil tank mainly include American Petroleum Institute Standard API 650, Japanese Industrial Standard JIS B8501, British Industrial Standard BS2654 and Chinese National Standard GB50341 from a global perspective. The formulas used in each specification are based on the hoop stress in the membrane theory. Each specification is based on the performance characteristics of materials and the construction technology level of their respective countries to determine the allowable stresses and weld coefficients. Therefore, the calculation results of tank wall thickness of API620 low-pressure oil tank with the same volume are sometimes quite different according to different specifications.

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