Method for lining a pipe or main

Details Method for lining a pipe or main Method for lining a pipe or main

B - Operations, Transporting

29

C

189/5

B29C 63/34 (2006.01) B29C 49/26 (2006.01) F16L 55/16 (2006.01) F16L 55/165 (2006.01)

Patent

CA 1275947

ABSTRACT A method for lining a pipe or main comprising heating a length of synthetic-resin liner pipe 20 of external diameter substantially equal to or greater than the internal diameter of the pipe or main 40 to be lined, mechanically deforming the heated liner pipe 20 to reduce its external diameter to legs than the internal diameter of the pipe or main 40 to be lined, causing the liner pipe 20 to enter the pipe or main 40 to be lined and pressurising the internal wall of the liner pipe 20 to cause it to expand into engagement with the internal wall of the pipe or main 40 to be lined.

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