HDPE Sub Duct – Direct Bury
Low Friction
Radius sub-ducts are designed for cable blowing & pulling and made from HDPE (High-Density Polyethylene) and feature our class-leading permanent co-extruded low friction HDPE inner lining for optimised cable installations.
Robust and flexible, Radius sub-ducts offer high performance in complex installations (eg. many bends & gradients).
Our sub-ducts are available with ribbed or smooth inner bore according to your preference and can be supplied pre-roped or pre-cabled.
Supplied in continuous lengths on single-way drums or multi-way drums to increase ease of installation and minimise cost .
In addition, we offer a comprehensive range of fittings and accessories including bends, connectors, spacers, seals and access chambers.
What is Low Friction coating?
A solid layer of lubricant is evenly distributed on the inner wall by coextrusion as part of the manufacturing process, providing a permanent low friction and low static surface which lasts for the life of the duct.
Low friction values allow quicker installation and optimal blowing distances. Radius microduct offers superior blowing performance in this market.
Low Friction Matters
Fast cable installation into ducting is key for cost effective, low disruption network build. Cable blowing is the method of choice for longer routes whereby cables are propulsed into the ducting using compressed air.
The blowing distance achieved is directly related to a number of factors including : cable to duct area fill ratio (we recommend 50 to 60% ideally but no more than 70%); weight of cable; pressure used, route difficulty (bends and gradients) and last but not least the Coefficient of Friction (CoF) from the microduct inner lining.
The contribution of the microduct inner lining to achieving speed of installation and longer blowing distances should not be underestimated. A quality lining should have the right combination of low CoF and low static for optimum results and for that reason, not all linings are created equal.
Class Leading
Friction Properties
At Radius, we have spent years of careful formulation and testing to achieve our class leading low friction and low static inner coatings. Our low friction compounds are home crafted, no ready-made mixes there!
And the results speak for themselves in the field where for the last 30 years we have helped our customers achieve proven consistent long install lengths thanks to our high-performance low friction coating.
Features & Benefits
- Suitable for installation into an open cut trench
- Designed for cable blowing & pulling
- Permanent low friction inner coating as standard
- Class-Leading blowing performance
- HDPE with excellent stress crack and crush resistance
- Up to 16bar blowing pressure
- Excellent chemical & weathering resistance
- Smooth or ribbed inner wall
- Pre-roping or pre-cabling option
- Supplied on single way or multi-way drums up to 4way
- Supplied on drums typically between 1000m to 5000m length
- Coils and lengths options
- Can be customised to meet user requirements
Why Low Friction Matters?
Sizes
| OD/ID (mm) | |
| 18 / 14 | 37 / 29 |
| 20 / 16 | 38 / 32 |
| 25 / 20 | 40 / 32 |
| 31 / 25 | 50 / 41 |
| 32 / 25 | 60 / 50 |
| 32 / 26 | 63 / 51 |
| 35 / 28 | 63 / 52 |
Other OD/IDs are available, please contact us to discuss your requirements.
Options
- Inner wall: Smooth or Ribbed
- Stripes
- Numbering
- Customer-specific print
- UV stabilisation
- Muti-way drums up to 4-way
- Pre-roping with 8KN rope
- Pre-cabling with fibre optic or copper cables
Certification
- Made to BS EN 61386-24 : 2010
Certification
- Made to BS EN 61386-24 : 2010
Brochure