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Microduct Assembly 20/16 mm

TWD 20/16 mm 2-7 -way S12

  • For direct burial
  • 2, 4 or 7 bundled ducts
  • 20/16 mm microducts
  • Low friction inner surface
  • Longitudinal grooves for maximum installation lengths
Three microduct assemblies in various colours

The thick walled microduct bundles consist of a number of microducts with an inner low friction surface that enables installation of air-blown fiber units or nano cables. The thick inner wall of the microducts allow for installation directly into the ground without the need for additional protection.

The duct assemblies are available in several configurations from 2 to 7 microducts.

20/16 mm microducts are optimized for installation of micro cables and nano cables. The microducts have a low-friction innner surface with longitudinal grooves for best blowing performance.

Microducts and outer sheath: HDPE

Technical Information

Color Code S12
Temperature, Operation [°C] -40 to +60
Temperature, Storage [°C] -40 to +60
Temperature, Installation [°C] -20 to +50

Abrasion: IEC 60794-1-2-E2B(1)
Kink: IEC 60794-1-2-E10, 20 x outer diameter
Impact: IEC 60794-1-2-E4
Crush: IEC 60794-1-2-E3
Tensile: IEC 60794-1-2-E
Bend: IEC 60794-1-2-E11A
Torsion: IEC 60794-1-2-E
Flexibility: IEC 60794-1-2-E8
Inner Clearance: IEC 60794-5-20, IEC 60794-5-10, Ann. D


Duct assemblies have markings showing the type and tube length. The individual microducts are identified by their colors (color stripes).

12 different colors are used: according to the S12 standard.

The assemblies are available in various sheath colors for easy identification.

Technical image # 1
S12 Color Code Chart for Microduct Assemblies