METHOD TO MAKE A CURVED TUBULAR ELEMENT TO CONVEY ABRASIVE MATERIALS SUCH AS CONCRETE OR SUCHLIKE, AND CURVED TUBULAR ELEMENT THUS OBTAINED
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United States of America Patent
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Issued Date -
Sep 25, 2014
app pub date -
Mar 19, 2014
filing date -
Mar 19, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method to make a curved tubular element comprising obtaining a first external curved tubular component, and a second internal curved component made of a material with a greater resistance to wear than the first external curved tubular component, and having a cross section which covers a portion of the internal surface of the first external curved tubular component. The first external curved tubular component includes at least two parts. Each of the parts has a cross section which is a respective portion of the complete tubular section of the first external curved tubular component; to bring the at least two parts near each other along respective connection edges, disposing the second internal curved component internally in contact with at least one of the two parts; to weld the at least two parts to define the first external curved tubular component and to enclose therein the second internal curved component.
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