| 摘要 |
PROBLEM TO BE SOLVED: To provide a high pressure gas bottle capable of easily and inexpensively manufactured and having superior quality. SOLUTION: In this high pressure gas bottle, plural annular recessed grooves are formed on an inner periphery of a high pressure gas inlet and outlet port at a head part of the bottle body, and a lining layer made of a surface-smooth resin is formed on the whole inner face of the annular recessed grooves and the bottle body.
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