Wuhan Global Metal Engineering Co., Ltd

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AL2O3 High purity Alumina Ceramic Tubes for thermocouple protection

AL2O3 High purity Alumina Ceramic Tubes for thermocouple protection

AL2O3 High purity Alumina Ceramic Tubes for thermocouple protection

Product Details:

Place of Origin: China
Brand Name: GME
Certification: ISO9001
Model Number: OEM

Payment & Shipping Terms:

Minimum Order Quantity: 10pcs
Packaging Details: Standard Export Packing
Delivery Time: 7-15days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 100000pcs/month
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Detailed Product Description
Material: Alumina Ceramic Ends: One End Closed,one End Open
Usage: Insulating Or Protection
High Light:

thermocouple accessories


thermocouple parts and components

AL2O3 High purity Alumina Ceramic Tubes for thermocouple prorection





alumina ceramic tube
1.Great mechanical strength.
2.Good heat resistant.
3.Good quality and best price.
4.Long life time.

1. We produce 95-99.7% alumina crucibles, boats, insulating parts, rods, wear resistance parts, high temperature ceramic parts etc of alumina ceramic tube products.
2. Mainly used in thermalcouple temperature, liquid steel continous temperature, various industrial furnace of alumina ceramic tube.
3. Especially widely used in petrochemical, spinning, electric, instrumentation, mechanical workout, military project etc industry of alumina ceramic tube.


Main performance index about alumina ceramic tube:


Project Test the condition Unit 99 porcelain 95 porcelain Talc porcelain
Backbone     99%AL2O3 95%AL2O3 MgO.SiO2
Physical property Density of volume Normal atmospheric temperature g/cm3 3.8 3.6 2.8
Airtight Normal atmospheric temperature . .Pass Pass
Absorbing water rate Normal atmospheric temperature % 0 0 0
Temperature that frit   °C 1800 1650 1350
Mechanical performance Rockwell hardness Normal atmospheric temperature HRA 88 86 76
Resist the intensity of turning back Normal atmospheric temperature Mpa 350 320 150
Compression strength Normal atmospheric temperature Mpa 1300 1200 900
Hot performance Use temperature at most   °C 1700 1600 1200
Heat resistant shaking 20O°C-1100O°C 10Num Pass Pass Pass
Hot coefficient of expansion 20O°C-80O°C ×10-6mm/°C 6.5-8.5 6.5-8.0 5.0-6.2
Heat-conduction rate 25°C W/m.k 29 25 2.9
300°C W/m.k 18 13 2
Dielectric constant The medium lossing 1MHz2O°C ×10-4 ≤2.5 ≤4 ≤8.0
The angle tangent is worth 1MHz8O°C ×10-4 ≤3.5 ≤4.2
Dielectric strength Normal atmospheric temperature KV/mm 15 16 20
Dielectric constant 1MHz2O°C   9-10.5 9-10 ≤7.5
Resistivity of volume 2O°C Ω.cm >1012 >1012 >1013
10O°C Ω.cm 1012-1013 1012-1013 1010-1011
30O°C Ω.cm >1012 3.1×109 5×108




Packaging of alumina ceramic tube: PE bag inside outer carton(930*630*230mm),finally make the wooden pallet(950*950mm 950*1000mm) or according to your requirement
Shipping of alumina ceramic tube: delivery within 15 days after confirm the order.

Contact Details
Wuhan Global Metal Engineering Co., Ltd

Contact Person: Mr. Frank

Tel: 86-27-86652330

Fax: 86-27-86653728

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