Glass tubes
Glass tubes & Cylinders
We provide glass tubes and cylinders made from various types of glass – either in full length or cut to size with subsequent edge treatment. We can manufacture a product that meets your requirements in almost any length from 1 to 2000 mm.
We also make precision glass tubes and cylinders with calibrated internal diameters and cylindrically ground outer surfaces – technically polished on request.
Below is a list of the glass types we process as standard. We are more than happy to supply other types of glass for your products on request. The provision of customer-specific glass for processing is also not a problem.
- Soda-lime glass
- Borosilicate glass 3.3
- Neutral, clear and brown glass
- Aluminosilicate glass (halogen glass)
- Lead glass
- Quartz glass
- Sealing glass
- Colored glass
The following forms are possible:
- Round
- Square/rectangular
- Oval
The tubes can be cut to length using the following procedures, each of which results in a different cross-section:
- Score cutting: sharp-edged, not 100% flat, cut surface is crystal clear
- Thermal cracking: sharp-edged, not 100% flat, cut surface is crystal clear
- Sawing: blunt, not 100% plane parallel, cut surface is frosted, slight chipping at edges possible
- Abrasive cutting: blunt, plane parallel cut, cut surface is frosted, largely free from chipping
After cutting the tubes to length, they are processed further. There are a number of options open to us here:
- Rounding or fire polishing the edges
- Chamfering the inner and outer edges
- Frosting surfaces (sand blasting)
- Thermal shaping of the ends
- Drilling out or expanding cylinder ends
SPECIAL
We have already manufactured special customer-specific solutions for this product group. Further examples of special products can be found under the respective product category or under Special Solutions.
Glass rings ground to precision inside and out
It often comes down to the last micrometer of accuracy, which we cannot achieve for larger dimensions with our drawing technique. To guarantee this accuracy, we use the latest grinding technology. Here, we can offer you CNC-polished inner surfaces, round-polished centerless outer surfaces, as well as technically polished surfaces.
Thin-walled glass tube sections
For many applications in sensor technology, it is necessary to encapsulate the sensor from the surroundings and protect it against adverse influences and contamination. A big problem occurs when the sensor needs a clear view or works in a short wavelength range. In that case, encapsulating the sensor with a very thin glass cover is recommended. These glass tube sections have a wall thickness of only 0.05 mm and a length of 3 mm. The edges are laser-cut and rounded.
