| 摘要 |
PROBLEM TO BE SOLVED: To improve strength to a pressure and reliability in a pressure vessel by combining tube-like bodies each having a bottom and annularly setting all welded parts along the peripheries of the tube-like bodies. SOLUTION: In this pressure vessel 1 for storing a depressurized or pressurized material, plural tube-like bodies 2 each having a bottom formed by integral machining such as pressing or spinning are combined to form one or more pressure chambers, and their junction parts are annularly welded along the periphery.
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