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Twin Walled Underground Burial Conduit Range

Flex-It offers the UGC-Series twin-walled underground burial conduit which has a corrugated exterior for additional strength, and a smooth internal bore that prevents cables from snagging. It’s manufactured from lightweight HDPE (high-density polyethylene) by a twin-extrusion process. This is where two pipes are extruded simultaneously (one inside the other) and heat welded in one continuous process.

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As with all underground cable conduits – used to convey mains electricity, data and telecommunications – the twin-walled range is coloured black and facilitates easy cable insertion.

Given the flexibility and mechanical resistance, and its high resistance to chemicals and water ingress, the underground conduit lends itself nicely to various installations, including those where an irregularity in the ground level is present.

The flexible burial conduit we supply is an excellent choice for running electric power to the garage or garden pond. Encasing such cables in an underground electrical conduit, before burying them, can help to minimise the risk of electric shocks and other potentially harmful events.

At Flex-It, we supply twin-walled underground conduit in 63mm and 110mm in 50m coils. All coils of the UGC-Series are supplied complete with a draw-cord pre-installed throughout and one conduit coupler per coil. We can supply 160mm as a special order item.

If you’ve got any questions about the underground conduit, or have any special requirements that you would like to discuss in more detail, please don’t hesitate to get in touch. Our team is always on hand and will be more than happy to help. Simply call 01530 812 195 during working hours, or drop us an email at sales@flex-it.co.uk, and we’ll get back to you as soon as possible.

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Material: HDPE (High-density polyethylene)
Colour: Black (Other colours upon request)
Other Information: Excellent impact resistance at low temperatures
BBA Approved
Manufactured to Highways specification
Manufactured to BS EN 61386

Specification Sheet

Click the PDF icon to download the UGC-Series specification sheet.

Product Code Trade Size Description Internal Diameter External Diameter Coil Size
UGC-063 63mm 63mm Twin-Wall Underground Burial Conduit 50mm 63mm 50m
UGC-110 110mm 110mm Twin-Wall Underground Burial Conduit 94mm 110mm 50m
UGC-160 160mm 160mm Twin-Wall Underground Burial Conduit 137mm 160mm 25m

* Please note UGC-110 & UGC-160 are normally collection only item due to their bulky size.
Delivery is available at cost when required, please enquire for further information.


Underground conduits are used for all sorts of projects.

They’re not only used to protect water, gas and electrical pipes, but they’re also used to protect people from their potentially dangerous content.

Almost all buildings make use of utilities and services that are delivered through pipework and cabling.

If left above ground, these pipes and cables are at risk of being crushed, broken, tampered with, or compromised by the environment.

They also provide a greater risk to the safety of people who might come into contact with them.

For example, if a water pipe is damaged, it could cause flooding, or if an electric cable is broken it could expose people to dangerous electric shocks.

While reducing so many risks, they also make for a much tidier installation, and you won’t have to worry about rooms looking cluttered.

Underground conduits can be made from a plethora of different materials, but here at Flex-It, ours are made from high-density polyethylene (HDPE).

This material offers lots of benefits, especially when it comes to protecting your delicate wires.

They’re able to withstand the harshest of temperatures and chemicals, making them ideal for a range of demanding underground cable management projects.

Using this material means that our conduits are extremely affordable, but this isn’t to say that their quality is compromised. With HDPE conduits, you get the best of both worlds.

We have a range of underground conduit sizes available so that you can select the best ones for your project.

From 40mm to 160mm, you’re sure to find the perfect match for whatever it is you’re working on.

Not sure which fitting is best for you?

Be sure to get in touch with our team of experts – we’re more than happy to help and provide our recommendations!

Here at Flex-It, we’ve been providing our customers with the highest quality conduits since 1995.

We’re immensely proud of the reputation we’ve built for ourselves, and we’ve worked with many high-profile companies over the years – like McDonald’s and Google. Why not join them in being one of our many satisfied customers?

We supply a massive range of indoor and outdoor conduits to aid all your cable management needs, and we’re confident you’ll find everything you require.

Unsure if our twin wall underground burial conduits are right for you?

Be sure to contact our team today by calling 01530 812 195 to speak to us directly, or emailing sales@flex-it.co.uk and we’ll be in touch with you as soon as we can.

We’re always more than happy to assist you!

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