High-Purity Alumina & Silicon Carbide Ceramic Tubes for High-Temperature Industrial Furnaces
Product Overview
Product Description
Engineered to withstand extreme thermal and corrosive environments, our high-performance ceramic tubes provide exceptional dimensional stability, high mechanical strength, and superior thermal shock resistance. Manufactured from high-purity Alumina (Al2O3 up to 99.7%) and Silicon Carbide (SiC), these tubes are designed for long service life in critical high-temperature operations, protecting thermocouples, heating elements, and furnace atmospheres.
Key Features & Benefits
· Exceptional Thermal Resistance: Capable of continuous operation at temperatures up to 1700°C (Alumina) and 1350°C - 1650°C (Silicon Carbide).
· High Resistance to Thermal Shock & Corrosion: Maintains structural integrity under severe temperature fluctuations and resists chemical attack from molten metal, slag, and acidic atmospheres.
· Superior Electrical Insulation: High dielectric strength at elevated temperatures makes them ideal for thermocouple protection sheaths and high-voltage insulation.
· Low Thermal Expansion: Minimal creep and distortion ensure consistent performance and extended service life, reducing downtime and replacement frequency.
· Customizable Sizes & Geometry: Available in single-bore, multi-bore, closed-one-end, or open-both-ends configurations with strict outer/inner diameter tolerances.
Technical Specifications
Property | High-Purity Alumina Tube (99.7% Al2O3) | Silicon Carbide Tube (RSiC / SiSiC) |
Max Working Temp | 1700°C | 1350°C - 1650°C |
Density | ≥ 3.90 g/cm³ | 2.70 - 3.10 g/cm³ |
Bending Strength | ≥ 330 MPa | ≥ 250 MPa |
Thermal Conductivity | 25 - 30 W/m·K | 45 - 110 W/m·K |
Water Absorption | 0% (Gas tight) | < 0.1% |
Typical Applications
· Thermocouple protection sheaths in metallurgy and glass manufacturing.
· High-temperature laboratory tube furnaces and industrial kilns.
· Radiant burner tubes and diffusion tubes for semiconductor processing.
· Support rods and structural components in thermal treatment units.
STRICT INTERNATIONAL STANDARD (ISO) CERTIFICATION
Established a global quality management and environmental management system.
Passed the international standard certification established by the International Organization for Standardization (ISO). After a strict and systematic international review process, it is proved that the products and services provided to customers are strictly maintained.
ISO 9001 International Standard For Quality Management
Our Quality Management System is managed to consistently meet the needs of our customers with the highest global quality.
ISO14001 Environmental Management System Certification
Establish a world-class green management system to minimize harmful environmental factors and demonstrate that the energy, resource consumption and regeneration of our products are effectively managed.
ISO 45001 Occupational Health and Safety Management System Certification
ISO 45001 Occupational Health and Safety Management System evolved from OHSAS18001 Occupational Health and Safety Management System. This new standard is designed to help organizations around the world ensure the health and safety of their workers.
Applications
Cement Industry
Used in raw material mills and cement mills for efficient grinding of clinker and additives.
Mining & Mineral Processing
Ideal for grinding ores, minerals, and metallurgical materials with high wear resistance.
Power Generation
Used in coal pulverizers and ash handling systems in thermal power plants.
Building Materials
For grinding ceramic raw materials, pottery clay, and other construction materials.
Pharmaceutical
Suitable for pharmaceutical ingredient grinding requiring contamination-free media.
Paints & Coatings
Used for pigment grinding and production of various coating materials.
Product Advantages
High Hardness & Wear Resistance
Vickers hardness ≥ 1100 HV, offering significantly lower wear loss compared to traditional steel balls.
Cost-Effective Solution
Longer service life means fewer replacements and reduced downtime for your production lines.
Low Abrasion & Contamination
Minimal material wear ensures product purity and prevents contamination during grinding processes.
Precision Manufacturing
Advanced isostatic pressing technology ensures uniform density and consistent quality in every ball.
Custom Sizes Available
We produce balls from Ø 1mm to Ø 100mm, with custom sizes available to meet your specific requirements.
Global Shipping & Support
Fast worldwide shipping with professional technical support from our engineering team.
