Ceramic Tubes For Vacuum and Furnaces
- Materials:Alumina (Al2O3)/ Zirconia(ZrO2) /Si3N4 /SiC ...etc
- Sizes:Diameters: 0.03" – 21.6"; length 0.01" – 10ft
- Delivery times:2 -25 days(depends on the quantity)
- Precision:Ra 0.1um tolerance: 0.001mm... etc
- Features:Heat resistance / Wear resistance / High purity / Refractory / High Corrosion / Good Insulation
- Customized:Can be custom for special sizes and shapes
1. Factory price and shipment within 24 hours In stocks
2. MOQ:1qty
3. Payment Term: PayPal; T/T; L/C etc.
4. Shipment: by sea by air by courier by post etc.
Furnace Ceramic Tubes High Temperature Tube For Vacuum Furnaces Kiln
High temperature tube furnaces are designed for vertical orientation and operation up to 1800 °C.
Ceramic tubes are extensively used in furnace and kiln applications although there are many other applications were they are commonly found. The furnace tube is heated from the outside and the interior of the ceramic tube provides the work environment.
Appliations:
Induction Furnace; Industrial Furnace;Furnace;Melting Furnace;Muffle Furnace;Electric Furnace;Induction Melting Furnace;Vacuum Furnace;Heat Treatment Furnace;Granulated Blast Furnace Slag; Sintering Furnace;Heating Furnace...Etc Others Furnace.
Lead through tubes
Lead through tubes are typically a tube with a flange at one end. These are often used to provide a passage through the wall of a furnace to allow burners or thermocouples to be passed through.
These tubes are made to order due to the large amount of variation in the requirement. We are able to offer most common tube sizes with a flange added.
Standard furnace tubes
Standard furnace tubes are round but other shapes can be manufactured. We have supplied grooved outer diameter tubes, oval, square, rectangular and hexagonal shapes.
Multi bore ceramic tubes are also available.
Available in diameters from 0.03" (0.7mm) – 21.6" (550mm)
Available in length from 0.01"(0.25mm) – 10ft (3050mm)

Type of ceramic tubes us manufacturer
as well as other high-temperature tubes, are suitable for use as, for example:
Radiant tubes (radiation tubes)
Thermocouple protection tubes
Muffle tubes
Atmosphere sampling tubes
Gas injection tubes
Burner nozzles
The general specifications service
1. Factory price with a discounts
2. Fast shipment within 24 hours
3. In stocks for hot sales sizes
4. MOQ:1qty
5. Online service  |
The Custom service
1. Can be custom for special sizes by drawing
2. Can offer a samples within 2 days
3. The delivery time within 20 days after confirmed the order
4. Factory price and Senior ceramic engineer service
5. Online service  |
Ceramic materials(include but not limited belows)
· 95%--99.99% Alumina (Al2O3) · Silicon Carbide · Silicon Nitride · TTZ: Magnesia partially stabilized Zirconia (ZrO2)
· YTZP: Yttria partially stabilized Zirconia (ZrO2) · ZDY: Yttria fully stabilized Zirconia (ZrO2)...
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Al 2O 3 |
ZrO2/Y2O3 |
ZrO2/MgO |
MgO |
SiC |
Si3N4 Reaction sintered |
Si3N4 Hot pressed |
ALN |
Physical properties |
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Density (g/cm3) |
3,9 |
5,9 |
5,75 |
3,58 |
3,2 |
3,27 |
3,29 |
3,26 |
Molecular weight (g/mole) |
102 |
- |
- |
40,4 |
40,1 |
140 |
140 |
41 |
Maximum service temperature air (°C) |
1700- 1800 |
1500 |
1000 |
2200 |
1500 |
1200- 1500 |
1100- 1600 |
1000- 1800 |
Mechanical properties |
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Hardness (Mohs) |
9 |
- |
- |
5,5 |
9 |
- |
- |
7 |
Modulus of elasticity (GPa) |
300-400 |
200 |
200 |
250-300 |
420 |
170-220 |
280-310 |
318 |
Poisson's ratio |
0,25 |
- |
- |
0,18 |
0,14 |
0,25-0,26 |
0,27 |
0,25 |
Fracture toughness (MPa.m1/2) |
2-3 |
7-13 |
6-10 |
- |
2,5-3,5 |
3,5-5 |
6,1 |
4,5 |
Electrical properties |
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Dielectric constant |
9-10 |
- |
- |
9-10 |
- |
10 |
10 |
9,2 |
Electrical resistivity at 20°C (Ohm.cm) |
>10 14 |
10 13-10 14 |
>10 10 |
- |
10 2-10 6 |
>10 7 |
10 12- 10 15 |
>10 14 |
Dielectric strength (kV/mm) |
10-20 |
9 |
2-10 |
- |
- |
- |
- |
15 |
Thermal properties |
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Specific heat (J/K/kg) |
900 |
400-500 |
420 |
870-880 |
750 |
690 |
680-800 |
800 |
Thermal conductivity (W/m/K) at 20°C |
26-35 |
2,2-3,2 |
1,5-2,5 |
40-50 |
63-155 |
9-30 |
15-43 |
180 |
Coefficient of thermal expansion ( 10-6) from 20 to 1000°C |
8-9 |
10-11 |
5-16 |
10-13 |
4-5 |
3 |
3,3 |
4,4-5,3 |
Melting point (°C) |
2050 |
2590 |
- |
2800 |
2500 |
1900 |
1900 |
2200 |
Customization & Machining Service:
As a ceramic parts manufacturer,us offer a wide of the ceramic specification,and customized&machinables. Get a Quote On Your Customized Now!! or up a files by EMAIL.
Our Custom Capabilities:
1.High Purity Martoxid Powder
2.OEM Support, More Than 10 Technicians With 5-Year R&D Experience
3.35000 ㎡workshop, annual output could reach hundred million pieces.
4.All crafts are inspected strictly based on drawings,checked each month.
5.Best Service And Quick Delivery Via Fedex,DHL,UPS,TNT Etc.
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Technical reference of manufacture |
Dimensional accuracy |
Up to 0.001mm |
Concentricity |
Up to 0.003mm |
Parallelism |
Up to 0.002mm |
The inner hole tolerance |
The minimum 0.005mm |
Straight flute |
The narrowest 0.1x100mm |
The thickness of the size |
Minimum to 0.02mm |
The screw thread |
Minimum internal thread M2 |
Cylindricity |
Up to 0.004mm |
The linear tolerance |
Up to 0.001mm |
The smallest aperture |
The minimum 0.07mm |
Precision process |
CNC maching,grinding,lapping |
Surface finish |
Glazed,polishing or metallized
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FAQ
1. Monthly Capacity: 50,000-60,000 pcs;
2. Material: OEM or as per your suggestion;
3. Lead time: about 7-20 days, pls confirm the quantities required;
4. Incoterm: FOB, CFR, CIF;
5. Delivery Cost: It is determinated by the destination port;
6. Payment Term: PayPal; T/T; L/C.
7. Shipment: by sea, by air, by courier, by post, etc.
Feedback
1. For any query or doubt, please contact us firstly, we will update with you soon;
2. For any other satisfaction, please also feedback to us, which could improve our service better and better.
For more information about ceramics parts,please contact our engineers in time >>> |

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