Canalization lasers, or pipe lasers, are used in pipeline construction, e.g. for the building of drainages and sewer pipes where the correctness of grade and direction is of the essence.
The canalization laser emits a laser beam that is either automatically levelled or tilted in a defined way, thereby creating a reference axis. The end of the pipe is then aligned with the help of a laser target, effectively threading the pipe onto the laser beam.