Water pipe : A pipe for conveying water.

Example:


Taxonomy
pipe, copper, wall thickness, tubing, schedules, tube, free encyclopedia, joints, pressure, PVC pipe, PeX tubing, copper tubing, copper pipes, wooden pipes, Pipe wall, drain pipe, History, commonly used.

Defination from the web:
pipe. A system of copper water tubes used in a radiator heating system. ... For many centuries, lead was the favored material for water pipes, due to its malleability (this use was so common ... A rusted water pipe due for replacement. ...