| 摘要 |
PROBLEM TO BE SOLVED: To provide a container appropriate for the highly purified high-pressure gas by forming a passive state film even in the case of using a relatively low-priced material such as manganese steel and chlomemolybdenum steel. SOLUTION: This container for the highly purified high-pressure gas is made of a metal mainly composed of iron, and the inner surface thereof is formed from the iron dioxide, and in the oxygen chemical condition thereof, oxygen of the iron hydroxide is less than 40% of the all of the oxygen. COPYRIGHT: (C)2004,JPO&NCIPI
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