ADCERAX is a leading alumina ceramic tube supplier in China, offering high-performance alumina tubes for sale at competitive factory prices. Our products deliver excellent high-temperature resistance, electrical insulation, and chemical stability—ideal for thermocouple protection, furnace systems, laboratory equipment, and industrial insulation.
We provide both standard and custom alumina tube sizes with tight tolerances to meet your exact specifications. As a direct manufacturer, we ensure fast delivery, reliable quality, and full engineering support.
Buy alumina tubes from ADCERAX for cost-effective, OEM-grade ceramic solutions.
1700°C
Max Operating Temp
Alumina tubes (also known as alumina ceramic tubes or alumina corundum tubes) are made primarily from α-phase aluminum oxide (Al₂O₃). Common purity levels include 95% alumina, 99% alumina, and high-purity grades ≥99.7%, depending on the application.
These ceramic pipes are formed through sintering processes, resulting in a dense, stable, and high-strength tubular structure ideal for demanding industrial environments.
Our alumina tubes are available in a wide range of standard and custom dimensions, with outer diameters from 3mm to 220mm and lengths up to 3000mm.
| Available Purity Grades | ||
|---|---|---|
| 96% Alumina (Al₂O₃) | Cost-effective option for general high-temperature and wear applications | Standard Grade |
| 99% Alumina (Al₂O₃) | Enhanced mechanical strength and thermal properties for demanding environments.Balanced performance and price | General Grade |
| 99.7%-99.8% Alumina (Al₂O₃) | Highest temperature resistance (1730°C), superior electrical insulation, excellent chemical inertness.Ideal for vacuum, semiconductor, and high-temp use | High Purity |
| Standard & Custom Dimensions | |||
|---|---|---|---|
| OD (mm) | ID (mm) | Length (mm) | Tolerance |
| 3-6 | 1-4 | 100-500 | ±0.05-0.5mm |
| 6-12 | 3-8 | 200-1000 | ±0.05-0.5mm |
| 12-220 | 6-20 | 300-3000 | ±0.05-5mm |
Custom Capabilities: Special dimensions, wall thickness, and lengths up to 3000mm available
Ceramic alumina tubes (Al₂O₃) are a highly versatile, advanced ceramic material with exceptional properties for high-performance industrial applications.
🔥Exceptional High-Temperature Resistance
Withstand continuous operating temperatures up to 1730°C for 99.7% purity grade
🛡️Superior Hardness & Wear Resistance
Excellent resistance to abrasion and wear, extending component lifespan
⚡Excellent Electrical Insulation
Superb electrical insulator with high dielectric strength
🧪High Chemical Inertness
Remarkable resistance to chemical attack from acids and alkalis
| Property | 96% Al₂O₃ | 99% Al₂O₃ | 99.7% Al₂O₃ |
|---|---|---|---|
| Density (g/cm³) | 3.65–3.8 | 3.8–3.9 | ≥3.93 |
| Flexural Strength (MPa) | 260 | 300 | 330 |
| Hardness (Mohs) | 8.8 | 9 | 9.1 |
| Thermal Conductivity (W/m·K) | 22 | 24 | 29 |
| Max Operating Temp (°C) | 1600 | 1680 | 1730 |
| Volume Resistivity (Ω·cm) | 10¹³–10¹⁵ | 10¹⁴–10¹⁵ | >10¹⁵ |
We provide a comprehensive selection of alumina ceramic pipe types to suit a wide range of industrial, laboratory, and high-temperature applications. Whether you need single-bore, double-bore (2-hole), multi-bore, or closed-end alumina ceramic tubes, ADCERAX can meet your requirements.
Alumina tube open both ends for high-temperature and insulating use.
Ceramic alumina close one end tube use in sensor protection, vacuum systems, or furnace liners.
Square Alumina ceramic pipe for Structural Insulation or custom slot assemblies.
Customized alumina single bore tubes are available upon request, including flanged, stepped, threaded, slotted.
High quality 2-hole alumina tube Ideal for thermocouple protection and dual-channel sampling.
Alumina four bores tube for dual-channel thermocouples and electrical isolation.
High quality industrial alumina ceramic 9-hole tube for multi-sensor or multi-path instrumentation.
Alumina ceramic multiple-bore tubes for complex assemblies requiring multiple internal channels.
High quality alumina ceramic porous tube for Filtration, Gas Diffusion, or Pressure Equalization
Alumina tube furnace for High-Temperature Heating and Thermal Processing
Alumina insulator tube for Abrasion and Corrosion Resistance in Fluid Systems
Alumina insulator tube for Electrical Isolation and Thermal Barrier Applications
Looking for a custom alumina tube supplier? We provide OEM solutions with fast delivery, precision machining, and expert support for your demanding application.
ADCERAX alumina tubes and ceramic parts provide solutions to common pain points across various industries.
Our alumina furnace tubes are used as thermocouple protection tubes, sensor sleeves, and heating element liners in high-temperature environments up to 1700°C.
Pain Point Addressed: Unstable temperature control and material breakdown at extreme heat
Use Case: “We integrated ADCERAX’s 99.7% alumina furnace tubes into our 1600°C sintering furnaces. The dimensional stability and thermal resistance exceeded our expectations, especially under continuous operation.”
— Michael Turner, Senior Process Engineer, Thermal Equipment OEM, USA
Precision alumina ceramic tubes for reaction vessels, sample tubes, and insulation components with chemical inertness and high purity.
Pain Point Addressed: Contamination and precision issues impacting research integrity
Use Case: “We chose ADCERAX’s high-purity alumina tubes for our gas-phase reaction setup. Their chemical inertness and tight tolerances were critical for our research repeatability.”
— Dr. Anna Müller, Lab Director, University Research Lab, Germany
Insulating alumina tubes are ideal for high-voltage feedthroughs, electrical isolators, and sensor protection sleeves in power electronics, control systems, and high-frequency devices.
Pain Point Addressed: Electrical breakdown and signal interference
Use Case: “The custom insulating alumina tubes from ADCERAX helped us solve dielectric breakdown issues in our 15kV inverter systems. Their engineering team was responsive and precise.”
— Lars Schneider, R&D Manager, Power Electronics Manufacturer, Germany
Alumina ceramic components resistant to corrosive media for pump components, valve parts, and chemical system linings.
Pain Point Addressed: Material corrosion, leakage, and frequent replacements
Use Case: “We use ADCERAX’s closed-end alumina tubes in our sulfuric acid sampling lines. They’ve proven highly resistant to corrosion and thermal shock.”
— Kenji Sato, Maintenance Supervisor, Chemical Plant, Japan
We specialize in custom alumina ceramic tubes with special sizes, tight tolerances, and complex features. OEM and small-batch support available.
Extra-large / Extra-small diameters, non-standard thicknesses, and ultra-long / ultra-short lengths.
Provide higher - level dimensional accuracy and concentricity control than the standard.
Flanges, steps, threads, drilling holes, grooves, etc.
Adjust the material according to the application requirements.
Polish and grind the surface to achieve a specific surface roughness.
Send us your drawing, CAD file, or physical sample with material grade, dimensions, tolerances, and quantity. Our engineers will evaluate the design and provide a detailed quotation with lead time and pricing.
Once the quote is approved, we proceed with sample prototyping (1–50 pcs) if needed, for testing and validation.
After sample approval or direct confirmation, we begin batch manufacturing using CNC machining, sintering, and polishing. All parts undergo dimensional checks, material purity testing, and surface finish inspection.
Finished products are securely packed and shipped via DHL/FedEx/UPS or your preferred method. We support global delivery with full documentation.
Our commitment to quality, flexibility, and customer-centric service sets us apart as your preferred partner for alumina ceramic tube solutions.
Competitive pricing with strict quality control from raw material sourcing to final delivery
Professional team providing comprehensive technical support and collaborative design
Small batch orders to large-scale production with complex geometries and tight tolerances
24-hour dispatch for standard items, 3-5 weeks for custom orders.
ADCERAX is a professional China alumina ceramics tube manufacturer that offers high-performance components with tight tolerances (±0.001mm) and custom geometries. Using advanced forming methods and CNC machining, we deliver precision-engineered solutions for electronics, chemical, and high-temperature applications.
This table highlights our core technical strengths, including material options, tight tolerances, and advanced manufacturing methods. We offer tailored solutions to meet diverse industrial requirements.
| Technical Capabilities Overview | |
|---|---|
| Material Grades | 96%, 99%, 99.5%, 99.7% Al₂O₃ – high purity for demanding applications |
| Tolerances | Up to ±0.001mm – suitable for precision assemblies |
| Forming Methods | Dry pressing, isostatic pressing, extrusion, casting, injection molding |
| Processing | CNC machining, fine grinding, polishing |
| Customization | Drawings, CAD files, or samples accepted for custom parts |
Yes. We have alumina ceramic tubes for sale in standard sizes, available for immediate shipment. We also support bulk orders and custom production for OEM clients.
The alumina tube price depends on:
We offer competitive factory prices and wholesale discounts for repeat orders.
Alumina tubes are commonly used in:
They are ideal for high-temperature, corrosive, and electrically sensitive environments.
Yes, they are gas-tight and chemically stable, ideal for vacuum and pressure systems.
Vacuum: They handle high vacuums (down to 10⁻⁷ Torr at 1400°C), resist outgassing, and insulate electrically, making them great for vacuum furnaces and feedthroughs.
High Pressure: Strong and corrosion-resistant, they withstand high pressure in reactors, gas systems, or sensor sheaths.
Key Features: High heat resistance (up to 1800°C), excellent insulation, and chemical stability.
Tips: Use high-purity alumina (99.7%–99.8%) for best results. Avoid sudden pressure changes to prevent cracking.
To get a custom alumina tube quote, please provide:
Sample orders: 2-3 weeks, Mass production: 3-5 weeks after sample approval (Detailed lead time depends on the complexity and specifications of the product), Standard products: 24-hour shipping from stock.
We do not recommend cutting alumina tubes yourself. Alumina is extremely hard and brittle. Improper handling may cause cracking or breakage.
Professional machining requires:
We suggest ordering pre-cut or custom-machined alumina tubes from ADCERAX.
Here's a simpler guide to keeping your alumina tubes clean and in good condition:
Safety & Handling:
Simple Cleaning:
Tougher Cleaning (Use Caution):
For baked-on stuff, very gentle scraping with plastic (NO METAL) might work.
For specific chemical residues, consult an Adcerax before using acids (NEVER Hydrofluoric Acid) or heat cleaning.
What NOT To Do:
NEVER use Hydrofluoric Acid (HF).
NO harsh scrubbing (like steel wool or sandpaper).
NO sudden hot/cold changes.
NO dropping or hitting.
Maintenance:
Following these steps helps keep your alumina tubes working well for longer. When in doubt, Please contact us.
We believe that Adcerax will become your best partner!
Please fill in your contact information in the form or call us.
*Our team will answer your inquiries within 24 hours.
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Looking for a reliable alumina tube supplier? Let us help you with your next project.
info@adcerax.com
+(86) 0731-74427743 | WhatsApp: +(86) 19311583352
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