flat-bottom cylindrical tank allowable longitudinal membrane compression stress in shell

flat-bottom cylindrical tank allowable longitudinal membrane compression stress in shell

Material for the outer tank flat-bottom cylindrical tank and for the roof that contains the vaporized liquefied gas but is primarily subjected to atmospheric temperatures may conform to one of the following:
a)Table 4-1 for design metal temperatures down to –35°F (lowest 1-day mean ambient temperature of–35°F) without impact test unless they are required by Table 4-1 or by the Purchaser.
b)Table R-3 for design metal temperatures down to –60°F without impact tests unless they are required by Table R-4 or by the Purchaser.

As a leading international flat-bottom cylindrical tank steel supplier, we have two warehouses, close to Tianjin port and Shanghai port. This superior geographical location effectively saves the domestic transportation cost and greatly improves our service level. At the same time, it also shortens our delivery time and provides more convenience for customers.

API 650 vertical tanks meet American Petroleum Industries (API) standards in design, material, fabrication, and testing of aboveground welded steel flat-bottom cylindrical tankstorage tanks for use in industrial applications.

Static storage loss is also known as "small breathing" consumption. The rise and fall of the temperature in the flat-bottom cylindrical tank leads to the increase and decrease of the pressure in the tank, which makes the mixed oil gas discharged from the tank, and the external air is sucked into the tank, resulting in the oil consumption. Fluid level loss is also called "big breathing" loss. It is the oil consumption caused by the change of gas space volume in the flat-bottom cylindrical tank during the oil receiving and sending operation, which causes the mixed oil gas to be discharged out of the tank, and the external air is sucked into the tank, resulting in the oil consumption due to the change of liquid level height.

API 620 welded storage tanks design

API 650 oil steel storage tanks construction

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