Microducts in HDPE for telecommunications Ducting for the protection of telephone, fibre optic and medium-voltage cables

The NTET Monotube/Tritube range includes high-density polyethylene (HDPE) tubes stabilized against ageing, designed as permanent ducting for the protection of telephone cables in fibre optic or copper, low- or medium-voltage electrical cables and signalling cables.

They are distinguished by light weight, high mechanical performance and ease of installation. Available in various diameters and colours, single or multiple, smooth or grooved. They can be installed in trenches, laid in open excavations, on prepared duct systems or in fiberglass cable trays for viaducts, tunnels and bridges.

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Microducts in HDPE for telecommunications – MONOTUBO Series

Product range

5 monotube codes and 2 tritube codes to cover every diameter and operating pressure requirement.

Single smooth or grooved HDPE tube, diameters Ø 40 and Ø 50 mm. Available in pressure classes PN 6, PN 10 and PN 12.5 to suit different installation depths and loads.

Parameter Value Unit
Cod. 3574423 — Monotubo Liscio Ø 40 PN 6 Thickness 3 mm
Cod. N0ES0368 — Monotubo Liscio Ø 40 PN 10 Thickness 3 mm
Cod. N0ES0002 — Monotubo Scanalato Ø 50 PN 6 Thickness 3 mm
Cod. N0ES0366 — Monotubo Liscio Ø 50 PN 10 Thickness 3.5 mm
Cod. 5781944 — Monotubo Liscio Ø 50 PN 12,5 Thickness 4.6 mm
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Technical specifications

Summary table

Code Series Description Thickness (mm) Coil length (m)
3574423 TB/M-40 Smooth Monotube Ø 40 PN 6 3 400
N0ES0368 TB/M-40 Smooth Monotube Ø 40 PN 10 3.5 400
N0ES0002 TB/M-50 Grooved Monotube Ø 50 PN 6 3 300
N0ES0366 TB/M-50 Smooth Monotube Ø 50 PN 10 3.5 300
5781944 TB/M-50 Smooth Monotube Ø 50 PN 12.5 4.6 300
N0ES0001 TB/T-50 Grooved Tritube Ø 50 PN 6 3 500
N0ES0367 TB/T-50 Grooved Tritube Ø 50 PN 10 3 350

Material and characteristics

  • Material: High-Density Polyethylene (HDPE), stabilized against ageing
  • Production: Continuous extrusion
  • Surfaces: Smooth or grooved (inside and outside for code N0ES0002)
  • Colours: Various, customizable on request
  • Supply: Coils with the possibility of customized lengths and identification

Accessories available on request

  • Expansion plugs
  • Draw cord
  • Coupling sleeves
  • Customized identification

Installation

  • Trenches and open excavations
  • Prepared duct systems
  • Fiberglass cable trays for viaducts, tunnels and bridges

Technical documentation

Scarica la scheda tecnica completa Monotubo/Tritubo con tutti i codici e le specifiche dimensionali.

Applications

NTET monotubes and tritubes are permanent ducting systems for cable protection in telecommunications, energy and signalling applications.

  • Fibre optic networks (FTTH/FTTB)

    Protection of fibre optic cables in ultra-broadband access networks. The grooved version facilitates fibre blowing inside the tube.

  • Copper telephone networks

    Ducting for traditional copper telephone cables, with mechanical protection and insulation from ground moisture.

  • Low- and medium-voltage electrical cables

    Mechanical protection of electrical distribution cables in buried installation or ducting systems, with PN 10 and PN 12.5 versions for greater depths.

  • Signalling cables

    Ducting for railway and road signalling cables, where continuous tubing in coils minimizes joints along the route.

  • Viaducts, tunnels and bridges

    Installation in fiberglass cable trays for cable routing on transport infrastructure, with direct fixing and mechanical protection.

FAQ

The monotube is a single tube, available in Ø 40 and Ø 50 mm. The tritube consists of three Ø 50 mm tubes coupled in a single bundle, for the simultaneous installation of three different cables in the same trench, reducing excavation costs.

The grooved version (code N0ES0002) has grooves both internally and externally. The internal grooving reduces friction and facilitates blowing fibre optic cable into the tube. The smooth version is intended for traditional cable pulling.

PN indicates the Nominal Pressure of the tube, which affects wall thickness. PN 6 (3 mm) for shallow installation depths, PN 10 (3.5 mm) for intermediate depths, PN 12.5 (4.6 mm) for deep installations with heavy loads. Greater thickness provides greater mechanical protection for the cable.

Ø 40 monotubes are supplied in 400 m coils. Ø 50 monotubes in 300 m coils. Ø 50 tritubes in 350–500 m coils depending on the PN class. Customized lengths available on request.

Yes, the tubes are available in various colours and can be supplied with custom identification printed along the tube. Coil lengths can also be customized according to site requirements.

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