Multi Layered FIMT | NBG Fiber Optics



Multi Layered


Tubes with additional protection layers manufactured by NBG are designed for applications, where the initial tube needs significantly more protection against mechanical influences, while the inner tube protects the integrated optical fibers against hydrogen and other environmental influences in order to provide maximum optical lifetime for their application. All fiber in metal tube products (FIMT) offered by NBG are produced according highest quality standards in the industry. With a wide variation range for fiber in metal tube products combined with the highest manufacturing accuracy, our products exceeding the needs and offers great performance in the field.

  • 32-Up to 114 fibers up to 192 fibers
  • 21-Temeprature Sensing sensing ready
  • 17-Direct Installation semi-Finished


Product abbreviation MST
Cable usage Data Transm. & Sensing
Outer diameter 1.6 mm up to 7.0 mm
Wall thickness per layer 0.125 mm up to 0.300 mm
Approx. Cable weight 9 kg up to 150 kg per km
Max. steel tube layer options up to 4
Maximum fiber count 144 (250µm), 192 (200µm)
Maximum continuous length Up to 40 km
Filling compound H2 absorbing optionally
High mechanical strength Tests acc. latest standards
Cost effective steel grade mixing Wide range possible

All values, product specifications and other given data are subject to change without notice to improve reliability, function, design or otherwise. Information contained in this data sheet are up-to-date as at the date of issue. As NBG cannot control or anticipate the conditions under which this product may be used, each user should review the information in specific context of the planned use. To the maximum extent permitted by law, NBG will not be responsible for damages of any nature resulting from the use or reliance upon the information contained in this data sheet.

Product overview created by Patrick Weissinger – 21.03.2019


Richard Groffie

Fiber Optics Solution Specialis
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