HDPE piping systems are highly corrosion resistant and stay firmly in place. It does not require costly upkeep or cathodic protection. It is more resistant to corrosive acids, bases, and salts than most pipe materials. Polyethylene is also unaffected by bacteria, fungi, and even the most "aggressive" naturally occurring soils. Many organic substances are resistant to solvents.
HDPE pipe systems with good flow properties are smoother than steel, cast iron, ductile iron, or concrete, a smaller PE pipe can carry the same volumetric flow rate at the same pressure. At high flow, it has less friction and a lower tendency to turbulence. Its superior chemical resistance and "non-stick" surface work together to virtually eliminate scaling and pitting while maintaining excellent hydraulic properties for the life of the pipe. HDPE piping systems and fittings are inherently strong, flexible, and resistant to external loads, vibrations, and pressure fluctuations such as water hammer. Polyethylene pipe is resistant to handling and bending even in cold weather.
HDPE pipe systems are available in either straight lengths or coils. They are lightweight and do not require heavy lifting equipment to install because they are made from materials that are roughly one-eighth the density of steel. It reduces the need for fittings, performs well when changing floors, and is effective in earthquake-prone areas. HDPE is resistant to freezing and allows for bending without the use of an excessive number of fittings. Because HDPE is not a delicate material, it can be easily laid in continuous lengths with bends on rough terrain.