Pipes that area made from polyethylene show the least exposure to corrosion from the movement of particles during the flow.

GRAPH : Shows the amount of corrosion on pipes made from different materials.
(Source : Test results obtained from Darmstadt Univsersity)
The graph above shows the first 100,000 tests conducted on PE pipe only 0,09mm of corrosion has been determined on the inner part of the surface.