Al₂O₃
Alumina Ceramics
High-purity alumina for insulation, high-temperature containment and structural duty where strength and electrical isolation have to hold at the same time.
Material detailsFORM 01
Ceramic Tubes
Straight and stepped tubes for high-temperature process lines, sensor protection and electrical isolation.
Advanced Industrial Ceramics
A ceramic tube does two jobs at once: it shields what is inside from the process, and it isolates what is inside from what is around it. That is why tubes appear in furnaces, thermocouple assemblies and corrosive process lines where a metal tube would either conduct, corrode or deform.
What decides the part is not the outside diameter alone. Bore, wall thickness and how straight the tube stays over its full length decide whether it fits the assembly and whether it survives the thermal cycles the assembly sees.
Specification and control points
| Material system | Alumina · Zirconia · Silicon carbide · Silicon nitride |
|---|---|
| Form | Straight · Stepped · Closed end |
| Outside diameter | Ground to your drawing |
| Bore | To drawing, held concentric with the outside |
| Wall thickness | Set by the drawing, held constant along the length |
| Length | Cut to order |
| Straightness | Stated and measured over the full length |
| Ends | As-fired · Ground · Chamfered |
FORM 01Alumina ceramic tubes — supplied part photograph
Part photographs
Ceramic Tubes parts photographed
Supplied photographs for this catalogue entry. Captions describe the geometry in each frame — ask us for drawings and grades with your enquiry.
Tube bundle in mixed bore sizes
Zirconia tube with stepped ends and cross holes
Silicon carbide radiation pipes with external locating lugs
Silicon carbide roller and cooling air pipes, wall perforated
Silicon carbide thermal protection tubes, closed ends
Typical applications
Applications this form is specified for
The industries below are the applications this material system is most often specified for. Tell us your own duty and we will confirm whether it is the right grade.
Thermocouple and sensor protectionHigh-temperature process linesElectrical isolation inside furnacesMolten metal transfer and pouringCorrosive media handling
Made to your requirement
What is defined with you before production
- Outside diameter and bore, each with its own tolerance
- Wall thickness, and how constant it has to stay
- Straightness, and over what length it is measured
- Operating temperature, medium and whether the tube cycles
Supply stage
Sample part first, then batch production on the same material and process basis. Ask for the material data sheet with your quotation.
Related pages
Forms and materials to compare
FORM 07
Ceramic Insulators
Insulating bodies, spacers and supports for equipment that runs hot and live at the same time.
Material detailsFORM 08
Ceramic Wear Parts
Liners, guides, bushes and contact parts that outlast metal where surfaces abrade or gall.
Material details