Pull-in-place pipe lining is a cured-in-place pipe (CIPP) method that pulls a resin-saturated liner into a damaged pipe from access points at both ends, then inflates it against the host pipe and cures the resin to form a new pipe inside the old one. It suits shorter runs and single sections.
The distinction is how the liner gets into the pipe. In the inversion method, covered by ASTM F1216, a resin-saturated tube is turned inside out by air or water pressure, so it needs only one access point and can run longer distances. Pull-in-place, covered by ASTM F1743, instead winches the liner in from both ends, then inflates a calibration hose inside it to press the resin against the host pipe before curing with hot water, steam, or light.
Because it pulls from both ends, pull-in-place fits shorter sections and point repairs where both sides of the damage can be reached, and it uses simpler winch-and-cable equipment. Inversion is generally chosen for longer lines, where the friction of pulling a long liner would work against the install. Both methods produce the same finished result: a jointless, tight-fitting cured-in-place pipe rated for a long service life.
Pull-in-place has limits. It needs an access point at each end of the section, which is not always available, and it cannot help a badly collapsed pipe or a line with a sag that holds water, since a liner does not rebuild a missing wall or correct a bad slope. A camera inspection first confirms whether the pipe is a candidate. For the full repair method and where it fits among other options, see sewer pipe lining and the overview of trenchless technology.