Corrosion Resistance

Before HDPE became widespread, metal pipes were commonly used. Metal pipes react chemically with the conveyed fluid or the environment, causing corrosion (rust). Over time, corrosion on the inner and outer surfaces reduces flow area, increases pressure losses, and lowers system efficiency. It also shortens service life and increases replacement cost.
HDPE pipes do not corrode and show minimal microbial growth, enabling long-life, efficient hydraulic systems.

Despite their flexibility, HDPE pipes are stiff and creep-resistant; sudden flow or pressure changes do not cause fatigue—fatigue resistance is high.

Temperature range: −50 °C to +60 °C (application dependent)
Estimated service life: 50–100 years under proper operating conditions.

Additional advantages

• Low density: easy, economical transport and handling

• Flexibility: better seismic performance

• High abrasion/friction resistance; no rust

• Chemical resistance to many acids, bases and salts

• Simple joining methods (electrofusion, butt welding, etc.)

• Good cost–performance

• No interaction with water; no effect on taste, odor or appearance

• Smooth bore → low friction, high flow

• Resistant to biofilm build-up

• Electrically non-conductive

• Resistant to many organic solvents; caution with nitric acid

• Environmentally friendly; recyclable