Lining of pipelines or passageways

Details Lining of pipelines or passageways Lining of pipelines or passageways

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 55/165 (2006.01)

Patent

CA 2051417

31 ABSTRACT OF THE DISCLOSURE The invention provides that a rigid plastics material (preferably p.v.c.) pipe is provided with folds and is introduced into a pipeline or passageway and heat is applied to the pipe to soften same. The hot pipe is unfolded and using fluid pressure, is expanded onto the pipeline or passageway surface to line same. When the pipe cools or is cooled, it remains in position on said surface. The pipe is folded into petal or star shape in cross section, and it may be twisted for even bending and/or it may be everted into the pipeline or passageway. Several methods of insertion are disclosed.

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