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{"title":"Custom Precision Machined High Purity 99.7% Al2O3 Alumina Ceramic Tube","imgUrl":"https:\/\/img.chinax.com\/nimg\/05\/10\/f5dbbbec406070de72973b6c1e9c-200x200-1\/custom_precision_machined_high_purity_99_7_25_al2o3_alumina_ceramic_tube.jpg","attrs":{"Place of Origin":"China","Minimum Order Quantity":"10","Surface Roughness":"Ra \u2264 0.8\u03bcm (Mirror Polishing Optional)","Dimensional Tolerance":"\u00b10.01mm (Customizable)"}}
{"title":"99% Purity Alumina Ceramic Thermocouple Protective Pipe Al2O3 Ceramic Tube","imgUrl":"https:\/\/img.chinax.com\/nimg\/fc\/6f\/6f962daffb0e192cbce24166d99c-200x200-1\/99_25_purity_alumina_ceramic_thermocouple_protective_pipe_al2o3_ceramic_tube.jpg","attrs":{"Brand Name":"YH","Place of Origin":"China","Delivery Time":"15-30 work days","Packaging Details":"wooden case and paper case"}}
{"title":"High Purity 99% Al2o3 Ceramic Alumina Tube Electric Insulation Heat Resistance","imgUrl":"https:\/\/img.chinax.com\/nimg\/ee\/54\/2dcee65f165978ae14c2e872725b-200x200-1\/high_purity_99_25_al2o3_ceramic_alumina_tube_electric_insulation_heat_resistance.jpg","attrs":{"Brand Name":"YH","Model Number":"YH-T","Certification":"ISO","Place of Origin":"China"}}
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High Temperature Resistant, Corrosion Resistant Porous Ceramic Tube for Filtration, Ventilation, Lab Experiment & Industrial Treatment
High-performance porous alumina tube made of high-purity alumina ceramic. Featuring uniform micropores, high temperature resistance, excellent chemical stability and air permeability. Widely used for gas filtration, liquid purification, industrial ventilation and laboratory high-temperature testing. Custom sizes & free test samples available, factory direct supply.
Key Features & Advantages
Uniform & Controllable Micropores: Adopts professional pore-forming process with consistent pore size distribution, adjustable porosity and stable air permeability. Achieves precise filtration and uniform ventilation without local air leakage or blockage.
Excellent High Temperature Resistance: Made of high-purity alumina ceramic raw materials, withstanding continuous high temperature up to 1200°C. No deformation, no cracking, no performance attenuation under long-term high-temperature working conditions.
Superior Chemical Stability: Inert to most acids, alkalis and organic solvents, resistant to chemical corrosion and oxidation. No chemical reaction with filtered gas and liquid, ensuring pure and pollution-free filtration effect.
High Mechanical Strength & Durability: Dense integrated sintering structure, strong compression resistance and impact resistance. Resists high-pressure airflow and liquid impact, not easy to break, reusable and long service life.
Self-cleaning & Low Maintenance: Smooth internal and external tube walls with anti-adhesion performance, not easy to adsorb impurities. Supports high-temperature baking and water washing cleaning, effectively reducing maintenance costs.
Full Customization Support: Customizable outer diameter, inner diameter, length, pore size and porosity. Special-shaped tubes and precision size processing are available to meet diverse industrial and experimental needs.
Alumina ceramic tubes of application:
Industrial Filtration & Purification: Used for gas dust removal, air filtration, liquid impurity removal and oil-water separation in chemical, metallurgical and environmental protection industries.
High-Temperature Ventilation & Aeration: Uniform air supply and ventilation for high-temperature furnaces, industrial ovens and reaction equipment, ensuring stable internal air pressure.
Laboratory Scientific Research: Applied in high-temperature experimental ventilation, gas diffusion, sample purification and precision chemical analysis experiments.
Precision Equipment Supporting: Used for airflow stabilization, noise reduction and impurity filtration in electronic equipment, testing instruments and industrial automation equipment.
Environmental Protection Treatment: Aeration and filtration treatment for industrial wastewater and waste gas, improving environmental protection treatment efficiency.
Industrial Ceramic Performance Specifications
Al₂O₃ Content (%)
70-75
85
95
99.7
Density (g/cm³)
3.0
3.4
3.7
3.9
Bending Strength (MPa)
85
300
364
450
Coefficient of Thermal Expansion (200℃-800℃)
6
7
7.6
8
Thermal Conductivity (W/(m·K))
17
18
20
35
Dielectric Strength (kV/mm)
9
10
11
12
Working Temperature (Long Term Use) (℃)
1300
1400
1600
1750
Water Absorption (%)
5
<0.2
<0.25
<0.1-0.2
Main advantage of the Alumina ceramic tubes:
Maximum tolerable temperature: 1600°C–1800°C, It does not soften or deform at high temperatures,
has a low coefficient of thermal expansion, and exhibits excellent thermal shock resistance.
Alumina ceramic tubes of Feature:
High Temperature Resistance: Can be used for extended periods at temperatures up to 1600°C or even higher (depending on alumina purity, such as 99% alumina).
High Hardness and Wear Resistance: With a Mohs hardness of up to 9, second only to diamond, it effectively resists particle abrasion and erosion.
Excellent Electrical Insulation: Maintains good insulation performance even at high temperatures, making it an ideal material for insulating sleeves.
Chemical Corrosion Resistance: Excellent resistance to most acids, alkalis, salts, and molten metals (except for hydrofluoric acid and high-temperature corrosion from strong alkalis).
High Mechanical Strength: High compressive and flexural strength, but is a brittle material with poor resistance to mechanical impact.
Low Coefficient of Thermal Expansion: Good dimensional stability and relatively good thermal shock resistance (but not as good as zirconium oxide).
Bio-Inert: High-purity alumina is harmless to human tissue.
Product Packaging
Qualified products are carefully packed in protective wooden boxes to ensure safe transportation and delivery.
Frequently Asked Questions
Q1. Do you provide product samples?
Yes, we provide samples subject to availability. A nominal sample fee may apply in some cases, and shipping costs are borne by the customer.
Q2. What are your accepted payment methods?
We accept T/T (bank transfer) in advance, Western Union, Alipay, and PayPal.
Q3. What is your typical delivery lead time?
Lead times vary depending on product requirements, including material selection, dimensions, and specific manufacturing processes.
Q4. Do you perform quality inspection before shipment?
Yes, we conduct 100% inspection of all goods prior to delivery to ensure they meet specified standards.
Q5. What other ceramic materials do you offer?
We supply a range of advanced ceramic materials, including Alumina, Zirconia, Aluminum Nitride, Boron Nitride, Silicon Nitride, Machinable Glass Ceramic, and related specialized ceramics.
