Why HDPE Conduit Is Ideal for Underground Cable Applications

March 21, 2025

WHY HDPE CONDUIT IS IDEAL FOR UNDERGROUND CABLE APPLICATIONS

High-density polyethylene (HDPE) conduits offer an outstanding combination of flexibility and durability for underground cable installations. With common applications ranging from power distribution and electrical utilities to coaxial and fiber optic cables, HDPE has become perhaps the most versatile cable-in-conduit (CIC) solution.

High-Densitity Polyethylene (HDPE) Conduit: A Durable and Flexible Solution

Polyethylene duct has an extensive history of use in underground power distribution cable applications, as well as in buried cables for networking and telecommunications. HDPE conduit also sees many uses in municipal applications – for example, underground cables for airport, highway, street, and parking area lighting. The material’s superior resistance to moisture, low temperature, and chemicals has also expanded its use to the irrigation sector and various wide-ranging industrial applications.

Essentially, the remarkable cost effectiveness and protection provided by HDPE conduit makes it ideal for virtually any of today’s power, coaxial or fiber optic cables which demand superior protection combined with good flexibility. That’s why millions of feet of cable have been installed in Allwire’s HDPE cable-in-conduit systems.

The Advantages of HDPE for Cable-in-Conduit:

Thermal Stability – Withstands temperatures as low as -75°C temperature without becoming brittle or losing ductility. At the other end of the spectrum, HDPE conduit can be rated to operate in temperatures up to 105°C.
Superior Flexibility – HDPE conduit flexes and gives when subjected to shear forces such as frost, ground shifting, or even earthquake upheavals. At the same time, it offers good impact resistance. That means less risk of damage during installation while ensuring long-term reliability.
Low Coefficient of Friction – Conduit to cable pulling tensions minimal with use of proper lube, which streamlines the installation process and further prevents cable damage.
Waterproof and Chemically Resistant – HDPE materials also offer excellent resistance to moisture, alkalis, and many common chemicals. It’s an outstanding conduit option to ensure long-term protection against corrosion.

HDPE onduit Applications: Underground and Buried Cables

Substation Control Systems – Allwire’s multi-conductor HDPE shielded cables are particularly well suited for substation control cable applications. They can also effectively be used as general-purpose control circuits in various industrial applications.
Submersible Pump and Groundwater Cables – Allwire manufactures submersible pump cables for groundwater equipment applications. These heavy-duty cables feature super-flexible copper stranding above industry standards. They are also abrasion/cut resistant, in addition to offering extended resistance to weathering, ozone, and UV radiation.

Custom HDPE Cable-in-Conduit (CIC) Solutions

From specialized industrial applications to broadcasting, studio, and stage cables, Allwire delivers a truly optimized wiring solution for every application. Whether you’re looking for quality off-the-shelf cables or customization options, let us know about your unique requirements and we’ll ensure you receive an optimized product solution!