Poly Ethylene. It is cheap black plastic pipe used a while ago. It was before Pex pipe was available. Its use was good at the time because it had no seams for underground installation form a water source to the house or cabin. Definitely not recommended today.
well i really dunno, but in schools its means physical education. (gym class)
Plain End
DRZ is not an acronym that is used in the plumbing industry so it does not stand for anything. DFU in plumbing means drainage fixture unit.
PE can stand for Physical Education. In medicine-Pulmonary Embolism
PE stands for Professional Engineer.
Physical Education
Pure Enduro
Points Earned.
Plain End
Mechanical joint
Dezinctafication process
Building Engineering Services