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Hitoshio; Keisuke
Osaka, JP
No. of patents:

Patent Number Title Of Patent Date Issued
8147623 Steel pipe as fuel injection pipe April 3, 2012
To provide a steel pipe as a fuel injection pipe with high material strength, high internal pressure limit free from fatigue failure, prolonged fatigue life, and high reliability. A steel pipe as a fuel injection pipe of 500 N/mm.sup.2 or higher tensile strength comprising, by mass,

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