How to limit evaporation of liquid contents from API standard 650 SUG I tanks

API 650 vertical tanks meet American Petroleum Industries (API) standards in design, material, fabrication, and testing of aboveground welded steel API standard 650 SUG I tanksstorage tanks for use in industrial applications.

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Deformation of the welding seam of the API standard 650 SUG I tanks is a common quality problem during the actual use of the API standard 650 SUG I tanks, which easily causes the tank body to leak and affects the safety of the oil storage tank. The welding seam deformation of the API standard 650 SUG I tanks is mainly caused by the lack of reserved welding seam gap and irregular operation. The oil storage tank has not reserved the corresponding weld gap, resulting in deeper root removal during the front welding activity. The heat output of the weld will increase under the influence of a long time, and the deformation of the weld will gradually become serious.