Customized Industrial Structural 99 Al2o3 Alumina Ceramic Tube with Flange for Furnace

Product Overview

Our high-precision alumina (Al₂O₃) ceramic tubing is engineered for semiconductor, laboratory, and industrial applications requiring extreme purity, thermal stability, and electrical insulation. Custom sizes and tolerances available for OEM integration.

Key Technical Specifications

✅ Material: 99.5% Alumina (Al₂O₃) – High-purity, low-porosity

✅ Density: 3.9 g/cm³ – Dense, gas-tight structure

✅ Flexural Strength: 300–400 MPa – Resists mechanical stress

✅ Hardness: 1,500 HV (Mohs 9) – Superior wear resistance

✅ Max Operating Temp: 1,600°C (2,912°F) – Continuous use

✅ Thermal Shock Resistance: ΔT >500°C (Water quenching test)

✅ Dielectric Strength: 15–20 kV/mm – Excellent insulation

✅ Surface Finish: Polished (Ra <0.1µm) or as-fired (Ra 0.5µm)

✅ Standard Sizes:

Outer Diameter (OD): 2–100mm (±0.05mm tolerance)

Inner Diameter (ID): 1–90mm

Length: 10–500mm (custom up to 1,000mm)

Industry Applications

1. Semiconductor Manufacturing

Plasma etch process tubes – Non-contaminating, RF-transparent

Wafer handling sleeves – Prevents electrostatic discharge (ESD)

2. Laboratory & Analytical Equipment

GC/MS chromatography columns – Chemically inert, high-temperature stable

High-vacuum feedthroughs – Ultra-low outgassing

3. Medical & Life Sciences

Sterilizable fluidic channels – Biocompatible (ISO 6474)

MRI-compatible sensor housings – Non-magnetic

4. Industrial Heating Systems

Thermocouple protection sheaths – Withstands molten metal/salt

Kiln furniture support rods – 1,500°C-capable

5. Energy & Environmental

Solid oxide fuel cell (SOFC) stacks – Ionic insulation

Exhaust gas sensor liners – Thermal cycling resistant

Why Choose Alumina Tubes?

✔ Semiconductor-Grade Purity – <50ppm metallic impurities

✔ Precision Machining – ID/OD concentricity <0.02mm

✔ Custom Configurations – Flanged, tapered, or threaded ends

✔ Cost-Effective – Longer lifespan than quartz/glass

Technical Parameters

Production process

Certifications

Our advantage

● Certificates: ISO & SGS

● OEM & ODM: OEM & ODM service is available

● Strict testing procedures :Meeting the requirements of the product design and process, providing reliable testing data.

● Short Delivery time:If less than 1000 pieces, it only takes around 5 days. We also stock some standard-sized products, if you need urgently, we can delivery very soon.

● Best ex-factory price

● Worldwide customers

● Customized according to needs

● Continuous research and development of new products

● Customer service:If you find some quality problem, please contact us, we’ll deal with it as soon as possible.

Packaging and shipping

Our customers have a wide range of processing choices for transportation mode.

Our Main Products

Company Profie

   Yixing Shengda Refractory Ceramic Co., Ltd, established in 1995, Yixing, China with an area of 4,000 square meters and fixed assets of over 1 million US dollars, is a professional manufacturer of Steatite Ceramic Parts, Alumina Ceramic Parts, Cordierite Ceramic Parts, Ceramic Band Heater Insulators, Ceramic Terminal Block, Thermostat Ceramic Parts, Zirconia Ceramics Parts, Ceramic Heater Plugs, etc. 

    Shengda Ceramic equipped with CAD/CAXA/Solidworks software to provide professional OEM & ODM service.

    Looking forward to co-operating with the customers from all over the world!

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