Abstract invention patent: "pressure vessel for storing liquids in bulk.The present invention relates to a pressure vessel for storing bulk liquids to form a space for storing liquids by combining the first plates each having a transverse reinforcement structure formed by the parts of the groove and bent parts of the edge with at least one sec. Unda reinforcement plate having a transverse structure of the flat plate.In which part of the pressure vessel is formed by plates having transverse reinforcement structure is folded, thus allowing the fluid to flow efficiently in the pressure vessel.The pressure vessel includes: a plurality of first plates having a transverse folded reinforcing structure formed by a part of the groove and a part of the edge.The first reinforcement plates being combined with each other and forming part of the pressure vessel; and at least one second reinforcement plate combined with the first plate of reinforcement and forming a remaining part of the pressure vessel, the second reinforcement plate having a transverse structure. The flat plate.
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