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140mm Electrical HDPE Bore Poly Pipe Coil

Highly durable and long-lasting pipe
Suitable for underground installation of electrical cables or pipelines
Resistant to UV rays, rust, and corrosion
 Does not require thrust blocks due to full axial restraint
Minimal water hammer and excellent abrasion resistance
Long lengths require minimal joins
Easy to install with a wide range of fittings
100+ year asset life
Certified to Australian Standard AS/NZS 4130


Electrical orange bore pipes are a popular choice for underground power transmission due to their durability, longevity, and resistance to wear and tear. Made of high-density polyethylene (HDPE), these pipes are highly resistant to corrosion and environmental stress cracking. This makes them an excellent cost-effective option for reducing the need for cable repairs and replacements.

These bore pipes come in various sizes and can be customized to suit different transmission needs. For example, the PN12.5 SDR13.6 PE100 electrical orange bore pipe is a widely used option for power transmission. It has a pressure rating of 12.5 bars, an SDR of 13.6, and is made of PE100, which is a high-density polyethylene material with excellent strength and toughness.

One of the significant advantages of electrical bore pipes is their versatility in transporting electricity over long distances and challenging terrains. They can be installed using directional drilling or trenching methods, with minimal disruption to the surrounding environment. This ensures that power transmission is reliable and safe while minimizing the impact on the environment.

Another advantage of electrical bore pipes is their ability to protect cables from damage and external factors. They are designed to withstand extreme temperatures, water, and chemicals, ensuring that the cables inside are protected and functioning optimally.

Electrical orange bore pipes are a reliable and cost-effective solution for power transmission suitable for various applications, including residential, commercial, and industrial projects. With their durability, flexibility, and versatility, they offer a long-term and practical solution for transporting electricity safely and efficiently.

Electrical orange bore pipes are an excellent solution for underground power transmission. They offer several advantages such as durability, longevity, versatility, and protection to cables from damage and external factors. These pipes are customizable to different transmission needs, making them a reliable and cost-effective solution for power transmission. Their installation is also eco-friendly, ensuring that power transmission is safe and reliable while minimizing the impact on the environment.


Nominal Outside Diameter (mm)

Mean Inside Diameter (mm)

Min Wall thickness (mm)

Ovality Max (mm)

Length (m)

Weight (kg)
Coil Dimensions
Width (mm) ID (mm) OD (mm)
140 118.9 10.3 2.8 100 429 515 2200 3200


* Custom lengths and SDRs available on request.
* Weights are averages for reference.
* Dimensions are approximate and may differ to what is supplied 


Pressure Nominal (PN)
Standard Dimension Ratio (SDR)
Polyethylene (PE)
12.5 13.6 100
  • PN: This stands for “Pressure Nominal” and refers to the nominal pressure rating of the pipe, which is the maximum pressure that the pipe can withstand under normal operating conditions. PN is typically expressed in units of bars or megapascals (MPa).
  • SDR: This stands for “Standard Dimension Ratio” and refers to the ratio of the outside diameter of the pipe to its wall thickness. SDR is an important specification for polyethylene pipes because it affects the pipe’s pressure rating and its ability to withstand bending and other stresses. A higher SDR value indicates a thinner wall and a lower pressure rating.
  • PE: This stands for “Polyethylene” and refers to the material used to make the pipe. Polyethylene is a strong, flexible, and durable material that is resistant to corrosion, chemicals, and UV radiation. It is commonly used for pipe applications because of its properties and ease of installation.


Explanation of Material / SDR Relationship

The pressure rating of pipe (PN) is determined by the diameter, wall thickness, and material types and
is expressed as: PN – Pressure pipe rating at 20°C (MPa x 10)

The basic polyethylene (PE) material types used for pipe production are PE63, PE80 and PE100, the number indicating long term strength.

The term SDR, Standard Dimension Ration, is introduced to describe the pipe, in combination with the material type.

SDR = Min. OD/Min. Wall Thickness

The higher the SDR, the thinner the pipe, and the lower the pressure rating. AS/NZS 4130 uses a standard SDR series, in combination with the three material types, to provide standard pipe pressure ratings as shown in the table. The field conditions under which poly pipe is welded have a considerable effect on the strength of the joint. Any contamination of the weld, whether it be oxidised polyethylene, water, dust, oils etc can ruin joints.

Material Properties

Strong and Durable, the pipes are manufactured from PE-100 polyethylene resin, pre-compounded with black or coloured pigment. Anti-oxidants used in the compounding process inhibit oxidisation while the use of carbon black at a concentration of 2.25 ± 0.25% by mass ensures ultra violet radiation is absorbed.


Physical Properties of Polyethylene
PE material type PE100
MRS (50 year) 10MPa
Flexural yield strength 32MPa
Circumferential flexural modulus (3 minutes) 950MPa
Circumferential flexural creep modulus (50 year) 260MPa
Density Tensile yield stress (50mm/min) 955kg/m3 25MPa
Tensile yield strain (50mm/min) 10%
Tensile modulus 900MPa
Poisson’s ratio Thermal expansion coefficient 0.4 1.8 x 104 /°C
Thermal conductivity 0.38W/m.K
Durometer hardness (ASTMD2240) 63 Shore D


Thermal Properties

It is important to be aware of the thermal properties of polyethylene pipe, especially when used in conjunction with steel. This is because polyethylene, by nature of its material properties, expands and contracts with temperature change much more than steel.
At ambient levels, polyethylene will expand or contract in the range of 1.2 to 2.4 x 10-4 per degree C, which is approximately 20 times the rate of steel. If restrained by a steel support structure, expansion will be restricted and stress will occur over time. This will reduce the pipe’s useable life.
A safe level of stress can be maintained when the ambient temperature fluctuation is less than 40°C, due to polyethylene’s relatively low tensile deformation modulus. Over time, the rigidity of the polyethylene will relax, enabling it to accommodate higher thermal strains.
Conductivity of polyethylene also varies with temperature, almost linearly and typically 0.47W/m L at 0°C to 0.37W/m K at 70°C. The heat of polyethylene will vary with temperature from 1800 Joules/kg.K at 0°C to 2200J/kg.K at 60°C.
At temperatures above 25°C, it is essential to reiterate polyethylene pressure pipe systems.
See below table for guidance on the maximum operating pressure of PE100 pipes at temperature. Note, at constant temperatures greater than 40°C, the pipe’s 50 year design life may be reduced.


Maximum Allowable Operating Pressure – PE100
Temp oC Min Life (yr) Design Factor PN12.5 SDR 13.6
20 100 1 127
25 100 1.1 115
30 100 1.1 115
35 50 1.2 106
40 50 1.2 106
45 35 1.3 99
50 22 1.4 91
55 15 1.4 91
60 7 1.5 85
80 1 2 63

NOTE: Testing has shown that the potential minimal usable life of polyethylene
pipe meets standards for maximum pipe life set by ISO9080.


AS/NZS 4130

Suitable Fittings


Product Description

Product Code

Electrical PVC Orange Conduit Coupling Adaptor 140mm PE To 125mm PVC


Electrical PVC Orange Coupling Adaptor 140mm PE To 140mm PE