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+49 2592 / 91 02-0info@mennes.de 

Tubes, capillary tubes and bars BORAN®

temperature-change resistant ~ pressure resistant

Special designs such as segments, half shells, pipe elbows, etc. are possible according customer specifications. Printings such as logos, scales or ornaments may also be applied.
Inner or outer glazing of glass cylinders can be realized as well according customer requests.
We are happy to advise you on the right choice of the appropriate model. 


Technical Data

use duration

life temporary

permanent load


Compressive strength

calculation of pressure resistance (p) if wall thickness (WD) + external diameter (AD) are given
p = (WD • 20 • k/s) / (AD - WD)

expansion coefficient

Median linear coefficient of thermal expansion a (20°C, 300°C) according to DIN ISO 7991
3,3 • 10-6 K-1


Your contact person

Martin Rademacher
Sales Special Glass Technology / lighting industry
Fon +49 (0) 25 92 / 91 02-13