These fittings are designed to change the end type of a pipe, allowing it to connect to fittings and pipes of many sizes. They can have threaded or slip socket ends to connect to an endless variety of pipes and fittings.
There are two ways for connecting PVC pipe and fittings together for a structural project. They are the PVC solvent (cement) method, and the fastener connect technique. Both versions work well, but we ALWAYS recommend using PVC cement, as it is the most secure and permanent answer.