This is a picture of a lateral line being pulled in. Once the entire lateral line is in they will cut them and push them back and fourth with a large crow bar. That is how they glue the pipe together without any couplings or compression fittings.
You can see how the sod of the green and the collar were raised in this picture. The machine also tore a lot of sod that had to be placed back together.
They hit a few metal pipes when they went around the putting green. It raised up the edge of the collar and green by the cart path a little. They fixed it the best they could but we may have to go back and do some work around it this spring.