Quartz glass tubes

Raesch Quarz (Germany) GmbH has been developing, producing and selling quartz glass tubes since the beginning of the 2000s. Due to their optical and thermal properties, these are mainly used in the lamp industry, chemical industry, semiconductor and solar industry in a variety of processes.

In a one-step process, the quartz glass tubes are manufactured directly and without further intermediate steps. State-of-the-art melting furnaces allow outside diameters from 7mm to 310mm, flexible wall thicknesses and lengths, and short response times for material changes. The preparation and doping of the high-purity quartz sand enables a broad portfolio of different quartz glass qualities.

On customer request, we take over the finishing and further processing of our quartz glass tubes. With state of the art cutting machines, for example, we shorten quartz sleeves to the desired length before delivery. In case of increased quality requirements, the quartz tubes can be further processed by a special cleaning or by our vacuum annealing process. This unique vacuum annealing process allows an extremely low residual OH content of <1 ppm, which can significantly improve the transmission properties in the UV range.

All of these refining steps (and the additional possibility of quartz glass calibration) make us the chosen supplier for well-known lamp manufacturers, as well as for customers of semiconductor manufacturing, the solar industry or the chemical industry worldwide.

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Application examples:

  • Process tubes for semiconductor and solar industry
  • Silicon crystal growth
  • Ampoule tubes
  • Chemical applications
  • Lamp bodies for gas discharge lamps
  • Lamp bodies for special lamps
  • Sleeves for air and water treatment
  • Quartz glass reactors for aggressive acids and water
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