Process for manufacturing ring-type metal joints for high pressure ducts
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United States of America Patent
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Aug 21, 2007
Grant Date -
Dec 15, 2005
app pub date -
Jun 10, 2004
filing date -
Jun 10, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Improved process for manufacturing ring-type metal joints for high pressure ducts, characterized because it presents the following steps: a) oval bar manufacturing and b) ring-type metal joints manufacturing, wherein the oval bar manufacturing comprises the following steps: submitting a round metal bar to a sharpening treatment before it is drawn through a die and forming the oval bar; cutting, rolling, and bending the oval bar and welding the profile; submitting the joint to an electrolytic coating treatment.
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