Hard surfacing for oil well tools
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United States of America Patent
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-
Jul 7, 1981
Issued Date -
N/A
app pub date -
May 1, 1980
filing date -
Jan 29, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is disclosed for applying to rotating well drilling parts such as tool joints a multiple layer of hardbanding materials to provide extended wear service for the well tools without incurring any of the accompanying spalling normally associated with heavy layers of hardbanding.
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