Well pipe
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United States of America Patent
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Mar 5, 2002
Grant Date -
N/A
app pub date -
Nov 9, 1999
filing date -
Nov 18, 1998
priority date (Note) -
Expired
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Abstract
The invention is a well pipe with longitudinal rods arranged in intervals in the pipe wall over the whole circumference. It is characterized by the fact that the well pipe is made of polymer concrete, and of an additional layer of packed gravel functioning as a filter if designed as a well filter pipe, and that the rods are glass fiber rods which transfer axial tensile load.
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