China Ceramic Alumina Tube manufacturer

Dielectric Porcelain Tube Insulator , High Temperature Ceramic Tube Air Tight

Product Details:
Place of Origin: Hunan, China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.CT.014
Payment & Shipping Terms:
Minimum Order Quantity: 10 Piece/Pieces
Price: Negotiable
Packaging Details: Vacuum packing with desiccant
Delivery Time: 4~5 weeks
Payment Terms: T/T, Western Union, MoneyGram, Paypal, , L/C
Supply Ability: 20000 Piece/Pieces per Month

Detail Information

Product Name: Alumina Ceramic Tubing Material: Advanced Alumina Ceramic
Color: Pure White, Pink, Black Optional Shape: Ceramic Tube, Ceramic Cylinder
Size: Size Customized Type: Ceramic Parts
Certificate: ISO9001:2008/SGS/ROHS Application: Industrial Ceramic
High Light:

alumina ceramic insulator


ceramic insulator tube

Product Description

Chemical Resistance Custom High Purity Aluminum Oxide / Alumina Ceramic Tubing

Description of alumina ceramic tubing

Our factory manufactures alumina ceramic tubing as a standard ceramic product with a wide range of specifications with different grades of aluminas, including 75% alumina, 85% alumina, 90% alumina, 95% alumina, 99% alumina, 99.5% alumina, 99.8% alumina. Besides, we could formulate different purity alumina according to physical needs and applications.

Alumina can take temperatures up to 1650°C, having extremely high-temperature stability, chemical corrosion resistance, and high wear and abrasion resistance. Most items are in stock and can be pulled and shipped normally under 1 week. These smaller diameter tubes are produced by extrusion, while larger diameters are produced by hot pressed, dry press or ISO pressed. Sizes are available from 1mm OD to 800 OD in lengths up to 2000mm long.

In order to reach some special requirement, all alumina ceramic tubing can precisely proceed via fine grinding, CNC machining, lapping, and polishing, then it will obtain higher dimensional accuracy, more desirable surface.

We have been dealing with a variety of alumina ceramic tubing in different types, such as two end open, one end closed, flanged ceramic tube, collared ceramic tue, slotted ceramic tube, half ceramic tube, double bore ceramic tube, triple-bore ceramic tube and so on.



Specification of the ceramic tubing

1. Material options: aluminum oxide ceramics (from 95% to 99.8%), zirconia ceramic, Silicon carbide ceramic, steatite ceramic

2. Forming methods: Dry pressed, Extrusion, Hot pressed, Ceramic Injection molding, ISO pressed

3. Dimension capability: Min. the inner diameter can be 1mm, Max. the outer diameter can be 800mm

4. Tolerance: outer diameter can be 0.005mm, the inner diameter can be 0.01mm, the overall length can be 0.01mm

5. Surface treatment: External and internal surface to be polished, glazed or metallized

6. Secondary processing: CNC machining, lapping, grinding, precision cutting and so on



Main characteristics of alumina ceramic tubing

1. Exceptional corrosion resistance, it can withstand various strong acid and alkali, like HF, H2SO4

2. Extraordinary electrical insulation, it always us in many high voltage, high-current application

3. Outstanding wear resistance, over 276 times in comparison with stainless steel

4. Great mechanical properties, hardness, compressive and flexural strength are much higher stainless steel



Material Data. Sheet

General Property Units 99.5% alumina 99% alumina 95% alumina
Mechanical Density g/cm3 ≥3.85 ≥3.80 ≥3.60
Water absorption % 0 0 0
Hardness HV 1700 1700 1500
Flexural strength Mpa ≥379 ≥338 ≥320
Compressive strength Mpa ≥2240 ≥2240 ≥2000
Fracture toughness Mpa m 1/2 4-5 4-5 3-4
Thermal Max. service
1650 1600 1450
CTE (20-800℃) 1×10 -6 /℃ 6.5~8.0 6.2~8.0 5.0~8.0
Thermal shock T(℃) ≥250 ≥200 ≥220
Thermal conductivity (25℃ ) W/m.k 30 29 24
Specific heat 1 x 10 3 J/(kg·K) 0.78 0.78 0.78
Electrical Volume resistivity (25℃ ) >1 x 10 14 >1 x 10 14 >1 x 10 14
Insulation strength KV/mm 19 18 18
Dielectric constant (1Mhz) (E) 9.7 9.5 9.5



Picture gallery of ceramic tubing

We also produce lots of different types of ceramic tubings, including threaded tube, half tube, one end tubes and so on. 

Dielectric Porcelain Tube Insulator , High Temperature Ceramic Tube Air Tight 0  Dielectric Porcelain Tube Insulator , High Temperature Ceramic Tube Air Tight 1  Dielectric Porcelain Tube Insulator , High Temperature Ceramic Tube Air Tight 2



Packaging proposal & Transportation methods


1. Vacuum packing with desiccant as an inner package;

2. Then, exported carton as an outer package.

3. Finally, it will be packed with a wooden case if needed.

4. We regularly use DHL, UPS, FedEx, and TNT to ship small parcels.

5. For large volume order, we could ship it by sea as per customers' needs.



FAQs (Frequently Asked Questions)

Q1: Is it available to produce customized products?

A: We always support custom-made metallic coated ceramic insulators as per different dimensions, designs, metallization, and platings.


Q2. When can I get the price?

A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price, please call us or tell us in your email so that we will proceed with your inquiry as a priority. 


Q3. How long can I expect to get the sample?

A: After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 4 weeks. The samples will be sent to you via express and arrive in 3-5 workdays. You can use your own express account or prepay us if you do not have an account.

Q4. How long does the whole procedure being worked out?

A: After you place an order, the manufacturing time is about 25 working days. 


Q5. How to ensure quality?

A: The dimension out of any batch will be carried out sampling inspection per International AQL standard. A 100% cosmetic inspection will be done. 


Q6. Are you a factory or trading company?
A: We are a professional manufacturer. We are warmly welcome clients from worldwide to visit our factory and cooperate with us.

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