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Spherical tanks are developing rapidly toward larger sizes in order to meet the needs of large-scale industrial storage, reduce the cost per unit of storage, and improve space utilization. In accordance with the revisions to the GB/T 17261-2011 standard, the upper limit for the nominal volume of spherical tanks has been increased from 10,000 m³ to 25,000 m³, marking a strategic shift in the industry toward larger-scale installations. China now possesses the capability to construct large LPG spheres of 8,800 m³ capacity, which have been successfully applied in overseas projects such as the Lobito refinery project in Angola. In terms of liquid medium storage, China has already mastered the manufacturing technology for 10,000 cubic meter liquid spherical tanks ； In the field of gaseous storage, it can reach up to 15,000 cubic meters. The Zhongsha Gulei ethylene project has established the largest cluster of spherical tanks in China, with 44 such tanks having a total capacity of 125,000 cubic meters; they are responsible for supplying 1.5 million tons per year of gaseous hydrocarbons. In the field of hydrogen energy, the scale of hydrogen storage in spherical tanks has reached 450,000 cubic meters, the highest in the world, reflecting China’s leadership in ultra-large-scale hydrogen storage projects. The trend toward larger sizes also presents challenges, such as the need to use high-strength steel, optimize welding processes, and strengthen on-site quality control. The application of automation and intelligent technologies (such as automatic welding robots and intelligent non-destructive testing systems) has effectively improved the construction efficiency and safety of large spherical tanks.