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Re-crystallized Alumina & Mullite
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Dimensional tolerances and allowances are conforming to DIN Standard 40680 Medium Class
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For (OD-ID) Diameters-Length-Camber-Ovality
and Eccentricity
| On diameter |
Tolerances |
| 1 to 5mm |
± 0.2mm or 4% whichever is greater |
| 5.1 to 40mm |
± 0.3mm or 2% whichever is greater |
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| On length |
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| 20 to 150mm |
± 0.5mm or 2% whichever is greater |
| 151 to 1500mm |
± 2mm or 1 % whichever is greater |
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| Allowance on Camber |
0.5% of the length |
| Allowance on Ovality |
0.1 mm or 0.5% of the diameter whichever is the greater |
| Allowance on Bore eccentricity |
0.05mm or 0.5% of the diameter |
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| Tolerances closer than above on request. |
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Duralox alumina and mullite ceramic pyrometry tubes
and parts are formed by high pressure extrusion, dry-wet bag isostatic pressing, uniaxial pressing, injection
moulding and slip casting process, depending upon the geometry and construction of the part. We are constantly
working for improvement of the product quality, hence the data given in the brochure may change as and when
found necessary.
Information contained herein is to our best of knowledge, true and accurate
and is based upon measurements made in our R&D Laboratory. Recommendations, suggestions and data are practical
guidelines and not guarantees. Actual results may vary with conditions of use and with variations in the methods
of manufacture, size and shape of the ceramic part. We disclaim any liability that may be incurred in connection
with use of suggestions or data. This publication is not to be taken as license to operate under or a recommendation
to infringe any patents. Observation of all legal regulations and patents is the responsibility of the user.
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