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Available from stock

Tubes & Multihole Tubes

Aluminium Oxide tubes are generally produced by extrusion or cold isostatic pressing (CIP). Over time, many extrusion tools have become available. During the extrusion process, three Al2O3 grades are used, i.e.: 99.7% Al2O3 and 60% Al2O3. Two grades are gas-tight. Then there is the third grade, which is a porous 80% Al2O3 extruded. The tubes are available with both ends open, or closed at one end. Depending on the diameter, lengths up to 4000 mm can be produced. Al2O3 tubes are used as thermocouple protection tubes, as wear-resistant inserts in metal tubes, and gas detection tubes in furnaces.

Multihole tubes are mainly used as thermocouple tubes. The most popular multihole tubes are twin bore and 4-bore.

Download a summary of the standard dimensions (pdf) or contact Gimex for more information.

Download
Available in the following sizes:
Number of holesTube diameter mmHoles diameter mm
22.20.5
230.8
241
261.8
282
28.52.5
2102.7
2123
42.60.6
441
44.51
45.51.2
48.51.5
4112.5
4123
4154.5
Examples by industry Material properties

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Contact
  • Gimex technische keramiek b.v.
  • Achterdijk 15
  • NL - 5705 CB Helmond
  • +31 (0)345 574 255
  • info@gimex.nl
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