Alumina ceramic pipes

Alumina ceramic hollow tubes are advanced industrial ceramic products with a hollow structure, mainly made from high-purity alumina (Al₂O₃, also known as al2o3 ceramic) through molding and high-temperature sintering. Common types include 95% alumina ceramic, 96% alumina ceramic, 97% alumina ceramic, 99% alumina ceramic, as well as higher purity grades such as 99.5% alumina ceramic (995 alumina ceramic), 99.7% alumina ceramic, 99.9% alumina ceramic, and even 99.99% alumina ceramic. Generally, the higher the purity, the better the performance. They fall under the category of precision alumina ceramics or fine alumina components, featuring a hollow cylindrical structure (a form of rod-shaped alumina), with dense and uniform tube walls, combining the excellent properties of alumina structural ceramics with the characteristics of hollow tubes.

• Material: 95%, 99%, or 99.7% Alumina 
• Smooth Surface & Precision Machining:.Customizable to drawing
• Surface roughness: Available from sintered surfaces to precision ground and polished surfaces as required.
• Dimension range: Outer diameter from 1mm to over 300mm, length up to 2000mm or longer (customisation available).

• High hardness and wear resistance: The Mohs hardness can reach level 9, second only to diamond, and it has excellent wear resistance, making it an ideal material for manufacturing alumina ceramic liners, alumina ceramic nozzles, alumina ceramic plungers and alumina ceramic bearings.
• Outstanding high-temperature performance: As high-temperature resistant alumina ceramics or high-temperature alumina ceramics, it can work for a long time in high-temperature environments above 1600℃, making it the preferred choice for alumina corundum tubes and alumina crucibles  in high-temperature industrial furnaces.
• Outstanding corrosion resistance: It has extremely strong resistance to most acids, alkalis, salts and molten metals, and has good chemical stability. 
• Excellent electrical insulation: It has excellent insulating performance of alumina at both normal and high temperatures, with high dielectric strength. 
• High mechanical strength: It has high flexural strength and compressive strength, but it is a brittle material with relatively weak impact resistance. 
• Moderate thermal conductivity: It has better thermal conductivity than most non-metallic materials and is suitable for heat dissipation components.
• Biological inertness: High-purity alumina ceramics, such as 99.9% alumina ceramics, are inert to human tissues and can be used in the field of alumina bioceramics.

• Manufactured from high-purity alumina raw material, sintered to achieve dense, non-porous structure
• Provides dimensional inspection reports and batch traceability
• Offers technical specification guidance and application recommendations

We strictly follow ISO 9001 quality management system to ensure consistency:

• 100% raw material inspection
• Advanced hot-pressing production lines
• In-house testing: density, hardness, microstructure analysis
• Third-party certifications (SGS, CE, ROHS available upon request)

• High-temperature industrial furnaces: used as thermocouple protection tubes, furnace tubes, high-temperature multi-crystalline tubes of alumina fiber, and sintering furnace tubes.
• Semiconductor industry: As diffusion tubes, boats, and process tubes in wafer processing.
• Analysis and detection instruments: used as insulating sleeves, sample tubes and combustion tubes in gas chromatographs, liquid chromatographs and spectrometers.
• Machinery and equipment: as wear-resistant conveying pipes, alumina ceramic bushings, alumina ceramic screws, and alumina ceramic sealing rings.
• Electrical and electronic: used for alumina ceramic substrates, alumina ceramic wafers, vacuum switch tube shells, and alumina insulators.
• Energy and environmental protection: Used as electrolyte tubes or protective sleeves in fuel cells and sensors.
• Special fields: Black and yellow alumina ceramics are used for special identification or functional components; porous alumina ceramic sheets are used for filtration; alumina ceramic bulletproof plates are used for safety protection.

• We specialize in Alumina ceramic hollow tube.We have a professional high-end ceramic manufacturing factory with 20 years of production experience, dedicated to providing you with solutions to various common problems.
• We use top-notch raw materials and advanced equipment for production.
• In the production process, we implement strict quality control at every stage to ensure excellent product quality.
• We have a research and development team composed of experts with profound professional knowledge.

• Q1: What is the purity of your alumina ceramics?

    A1: We offer alumina ceramics in various purities-95%, 99%, 99.5%, and 99.7%-depending onyour application requirements.

• Q2: Can you produce customized parts according to drawings?

    A2:Yes. We can produce customized alumina parts based on your drawings, samples, orspecifications, including size, shape, tolerance, and surface finish.

• Q3: What is your lead time for samples and mass production?

    A3 :Samples usually take 7-10 days, and mass production typically requires 3-4 weeks dependingon product complexity.

• Q4: How do you ensure product quality?

    A4: We maintain strict quality control throughout every stage - raw material inspection, forming.
sintering, machining, and final testing- with inspection reports available upon request.

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