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Ceramic tubes are a robust product that are extensively used for many applications and can be provided using a variety of materials. Ceramic tubes can be manufactured in mullite, corundum, alumina, sillimanite, mullite-bonded silicon carbide, recrystallised silicon carbide, and zirconia, where the most suitable material is determined by working factors within the application such as the operating temperature, atmospheric conditions and heating or cooling rates.
One common use of ceramic tubes is within furnace and kiln applications. Furnace tubes are available in several of the ceramic tube materials, and work by heating from the outside and the interior of the ceramic tube providing the working environment.
Furnace tubes can be made as either dense or porous products. Dense products are required where there is internal pressure or atmosphere in the furnace. However, these products are a little more prone to thermal shock, so the heating rates need to be more carefully controlled to prevent cracking. By comparison porous products, where small pockets of air are present in the material body, can be used in environments where gas or liquid tightness is not critical, and for applications where faster heating or cooling rates are required.
At Anderman Ceramics, we have in-house capability through our manufacturing techniques to supply furnace tubes with custom designs, special dimensions and tolerances, or with extremely tight tolerances. It is also possible to add additional features to the tubes such as flanges, drilled holes, or cut out sections. These features can be added and made to order in a variety of material grades.
Alongside specialised or custom made to order parts, we also keep an extensive range of tube sizes in stock in various material grades. These tube sizes range from small outer diameters of 0.7mm (0.03”), up to a maximum diameter of 550mm (21.6”), and in various lengths up to 3050mm (10 ft). Multi-bore ceramic tubes are also available in various diameter, lengths, and bore quantities. Our in-house cutting facilities also means that we can cut stock sizes to any specific length requested, meaning that stock parts with custom lengths can be delivered with very quick lead times compared to manufacturing new tubes to a desired length.
Our expertise and product range of furnace tubes means that we are able to provide a product that will meet expectations within even the most extreme working environments.
Please contact sales@andermanceramics.com for further information and to discuss your furnace tube requirements.
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