Polyethylene (PE) Pipes

Polyethylene is a thermoplastic polymer characterized by high impact toughness, lightweight properties, and comprehensive chemical inertness. Grade classification is based on Minimum Required Strength under 20 °C hydrostatic testing over 50 years; PE100 possesses an endurance of 10 MPa, while PE80 corresponds to 8 MPa.

Because PE100 provides higher tensile endurance, its standard design stress is 8.0 MPa compared to 6.3 MPa for PE80. This enables thinner walls for the same nominal pressure class, reducing linear pipe weight while expanding the internal hydraulic cross-section.

The catalog organizes polyethylene into 5 specialized application branches: 1) Pressure & Water Supply (PE100 and PE80 with blue identification stripes); 2) Gas Distribution Pipes in SDR11 (solid yellow or black with yellow stripes); 3) Sewage, Corrugated & Drainage Pipes (double-wall corrugated, solid-wall, and slotted drainage coils); 4) Well Pipes (casing and heavy pump risers); 5) Cable Conduit and telecom subduct.

All black PE pipes incorporate 2.0% to 2.5% finely dispersed carbon black, protecting the polymer matrix against long-term solar UV oxidation during storage and above-ground installation.

The smooth inner bore of polyethylene pipes features an extremely low absolute roughness value (approximately 0.007 mm). This minimizes Darcy-Weisbach frictional head losses and prevents scale accumulation, slime deposition, or tuberculation throughout the pipeline service life.

Longitudinal elasticity permits cold bending along natural trench contours, eliminating unnecessary directional fittings and welding steps on wide radii.