Eliminates the need to remove the internal bead during the butt welding process
Radius Beadless is an innovative electric cable duct which has been specifically designed to remove the on-site internal de-beading process.
Radius Beadless features machined internal profiles at both ends of the duct engineered to provide a recess in the pipe wall for bead seating. This guarantees no protrusion of the bead into the internal bore of the pipe once welded. This provides full bore clearance along the duct route, thus removing the risk of the cable snagging and being damaged when it is pulled through the pipe.
Radius Beadless ECD saves you time and money by offering a faster and safer cable duct process installation, mitigating cable damage and reducing operational site costs.
Made from PE100 with high tensile strength and meets ENA TS 12-24 Class 1+. It can withstand rocky ground conditions and is ideally suited to Horizontal Directional Drilling (HDD).
Radius Beadless ECD is available in OD range 90m-315mm in various SDRs and lengths options making it suitable for a broad range of applications.
What is ENA TS 12-24
Class 1, 2, 3 ?
ENA is the Energy Networks Association which represents the cables and pipes Transmission and Distribution network operators for gas and electricity in the UK.
ENA TS 12-24 is the technical specification issued by the ENA for plastic ducts for buried electric cables and defines the essential performance requirements and limiting dimensions, colour and identification details for coiled and non-coiled, plain or corrugated wall, circular cross section, extruded plastic cable ducts.
Class 1, 2 & 3 ducts protect low, medium/high voltage cables operating at 11kV, 33kV and EHV up to 132kV.
Class 1+ 450N at 75°C
Class 1+ electric cable duct means that the ducting provides 450N compression strength at 75ºC and in addition, is manufactured from high grade PE100 material that satisfies the test requirements for pressure rating defined in Clause 16.6 of ENA TS 12-24. Manufactured in either black or red colour.
Class 1 450N at 75°C
Class 1 electric cable duct means that the ducting provides 450N compression strength at 75ºC. Manufactured in either black or red uPVC or HDPE.
Class 2 450N at 50°C
Class 2 electric cable duct means that the ducting provides 450N compression strength at 50ºC. Manufactured in either black or red uPVC or HDPE.
Class 3 450N at 23°C
Class 3 electric cable duct means that the ducting provides 450N compression strength at 23ºC. Manufactured in either black or red uPVC or HDPE.
What is SDR in PE pipes?
SDR stands for Standard Dimensional Ratio and refers to the geometry of the pipe. SDR is defined as the ratio of the nominal outside diameter (OD) to the nominal wall thickness. The SDR value of the PE pipe is the main factor in determining the resistance of the pipe against the forces during installation and work pressure.
where dn is the nominal outside diameter of the pipe and en is the nominal wall thickness of the pipe.
Therefore a higher SDR indicates a thinner-walled pipe at any given diameter. As an example, SDR17 has a thinner wall and lower pressure class than an SDR 11.
Knowing and understanding SDR value is essential for many applications, including, but not limited to, the following:
- When calculating the internal pressure inside of a pipe system
- When inserting objects into a pipe system such as ID stiffeners for compression fittings
- When determining the tensile strength of a pipe under high stress
- When assessing the compressive strength of a pipeline undergoing burial
Common SDRs for PE pipes: SDR9, SDR11, SDR13.6, SDR17, SDR21