Right, Joe ... This is the in-line coupling process commonly called a "stab fitting." You can also use a thermal heater to weld the lines together with a coupling device. When you turn up out of the dirt, there is a plastic and metal "EL" you attach to the in-gound pipe. This EL is attached using the stab fitting or a thermal device. This video shows you and the above ground EL.
Anything above ground is done with traditional metal piping because plastic is vulnerable to UV and to breakage. The plastic pipe is fast underground and flexible around corners. They also have 90 degree fittings.