Methods and systems for abrasive cleaning and barrier coating/sealing of pipes
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United States of America Patent
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Jan 31, 2017
Grant Date -
Jul 3, 2014
app pub date -
Jan 31, 2014
filing date -
Aug 28, 2002
priority date (Note) -
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Abstract
Methods for abrasive cleaning, existing pipes before coating interior surfaces which extends the life of piping systems such as copper, steel, lead, brass, cast iron piping and composite materials. The method can include the steps of generating pressurized gas into pipes to generate a moving air stream, intermittently injecting separate spaced apart bursts of abrasive particles into the moving air stream with different cumulative amounts of the intermittent bursts of the abrasive particles that vary based on different piping diameters, cleaning interior wall surfaces of the pipes with the intermittent bursts of the particles, reducing at least one of burrs or interior lips in the interior wall surfaces of the pipes, with the intermittent bursts of the particles and removing abrasive particles and debris caused by each one of the separate burst shots of the abrasive particles.
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