Method of bending a thick metal tube, and apparatus for implementing the method
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United States of America Patent
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Aug 18, 1987
Grant Date -
N/A
app pub date -
Apr 2, 1986
filing date -
Apr 4, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for bending thick metal tubes is disclosed and is characterized in that thermal insulation is disposed inside the heated zone of the tube being bent, and that the thickness of said thermal insulation is great enough to considerably reduce the temperature gradient between the inside and outside surfaces of the tube in said heated zone.
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