Specs and Techs: Micro Blown Cable


Micro Blown Cables are designed to be used with the Microduct system and installed using a blowing machine for long installations. It is constructed of Fibres inside multiple gel filled loose tubes which range from 12 fibre to 288 fibre cable. The cable is strengthened by a glass reinforced plastic (GRP) strength member with a high-density polyethylene outer sheath. The exterior is UV stabilised with a 2.5% evenly dispersed carbon black. This construction gives maximum flexibility while isolating the Fibres from installation and environmental rigours. UV stabilised with a 2.5% evenly dispersed carbon black.

Cable Structure:

  • Thixotropic jelly filled loose tube design.
  • Tubes SZ stranded around the central strength member.
  • Water blocking yarns and tape are applied for cable core water ingress protection.
  • Over sheathed with Black HDPE.
  • One ripcord laid beneath the sheath.
  • Fibres in full compliance with ITU-T.


  • Small diameter, light weight, optimized for blowing or pushing into micro ducts.
  • Superior blowing performance.
  • Working temperature: -20°C~+70°C.
  • 25-year life expectancy.


  • Fibre attenuation at 1310/1550nm: ≤0.35/0.21db/km.
  • Fibre linear PMD: ≤0.06ps/√km (M=20, Q=0.01%).
  • Installation tensile resistance: 1.2 times cable weight, not less than 600N.
  • Crush resistance: 650N.
  • Water penetration: 3m sample, 1m water column, for 24h.
  • Cable print: MBC, fibre count, fibre type, HFCL, production date, cable ID number, meter count.
Parameter Dimensions / Layout Type
Fibre Count 12F 24F 48F 72F 96F 144F 192F 216F 288F 396F
Numbers of fibres
per tube
12 24 36 Glass Fibre
Number of loose
1 2 4 6 4 6 8 9 8 11 PBTP
Number of Fillers 5 4 2 0 2 0 HDPE – Black
Central Strength
1.9 +/- 0.1mm 2.2 +/- 0.1mm 2.2mm PE up coated to 3.2mm 2.7mm PE up coated to 3.8mm 3.5 +/- 0.1mm 3.5mm PE up
coated to
Moisture Barrier Over FRP Rod + Core Water Swellable
Outer Sheath 0.5mm (Nominal) HDPE – Black/
Grey (RAL7001)
Number of
1 Polyester
Cable Diameter 6.5 +/- 0.5mm 7.5 +/- 0.5mm 8.0 +/- 0.5mm 8.5 +/- 0.5mm 11.0 +/- 0.5mm
Cable Weight/km 35 +/- 5kg/km 50 +/- 5kg/km 55 +/- 5kg/km 65 +/- 5kg/km 70 +/- 10kg/km 110 +/- 10 kg/km

Colour Codes for Fibre and Tube

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