| 摘要 |
Disclosed is a method for lining a pipe or main, the method comprising providing a liner pipe 20 with means to convey fluid along its outer surface, providing a pipe or main 40 to be lined with a vent 80 to enable fluid to pass through a wall of the pipe or main 40 and passing the liner pipe 20 through the pipe or main 40 to line the pipe or main 40 such that at least a portion of the means to convey fluid along the outer surface of the liner pipe 20 is in fluid communication with the vent 80 in the pipe or main 40. |
