High-pressure fuel pipe for diesel engines
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United States of America Patent
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Issued Date -
Jun 16, 2005
app pub date -
Dec 15, 2004
filing date -
Dec 16, 2003
priority date (Note) -
Abandoned
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Abstract
There is provided a high-pressure fuel pipe for diesel engines, which is excellent in inner-pressure fatigue resistant property, vibrational fatigue resistant property, cavitation-resistant property, seat surface crack resistant property, and bending shape stability, and capable of thinning and lightening. A high-pressure fuel pipe for diesel engines, composed of a low alloy transformation inducing plastic type strength steel containing residual austenite of 5 to 40 wt %, and wherein an inner surface of a flow passage has a crack depth of 20 .mu.m or less, and plastic working is applied to an inner surface of a flow passage.
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