Q: Tim, I went to buy some plastic drain pipe, and after looking at all the types my head started to hurt. I decided to leave the store and do some research. I’ve got several projects for which I need ...

Springfield, Mo.-based United Poly Systems LLC is extruding a new line of HDPE pipe in the same sizes as traditional copper tubes and iron pipes for a range of applications, particularly water uses.

Among a service tech’s many responsibilities is to pipe together refrigeration system components. When piping a system together, a technician must decide which pipe size to use — it’s not always as ...