Interlocked plastic-encased concrete pipe

Pipes and tubular conduits – Distinct layers – With mechanical means to hold layers in contact

Patent

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Details

138175, 138144, 138172, F16L 914

Patent

active

055730400

ABSTRACT:
A composite concrete pipe in which both the inner and outer surfaces are plastic. The pipe may be formed of any diameter by forming the inner and outer plastic surfaces from helically wrapped interlocking plastic strips to form the diameters desired.

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