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Quick Details

  • Place of Origin: Henan, China (Mainland)
  • Type: Ceramic Tubes
  • Model Number: Si3N4 Bonded Sic Protection Tube
  • Brand Name: T-Long
  • Shape: Pipe
  • Max working temperature: 1700C
  • Porosity: 10-11%
  • Thermal expansivity: 2.53(1X10-6)/k
  • Mohs hardness: 80-90HRA
  • Bending strength: 160-180Mpa
  • Thermal conductivity: 0.08W/(m*K)
  • Length:: 200-1500mm
  • Bulk density: >=2.8g/cm3
  • Out Diameter: 16-200mm(can customized according to demand)

Packaging & Delivery

Packaging Details bubble paper inside, wooden box outside
Delivery Time 2-30 days after receiving the payment


1,Professional manufacturer
2,Long working life 

                     Factory Wholesale!! Si3N4 Bonded Sic Thermocouple Protection Tube





Silicon nitride (Si3N4) bonded silicon carbide (SiC) material is produced by adding industrial silicon paste into artificial aggregate. Under high temperature, Si and N2 reacts with the formula of 2N2+3Si=Si3N4, Si3N4 bonded Sic material is formed by bonding SiC particles tightly.


Si3N4 bonded SiC material is an excellent refractory with the original properties of SiC. The material has quite high strength even under the temperature of 1700.C has properties of creep deformation resistance and anti-chemical erosion, and has excellent thermal conductivity and wear-resistance.




1.Very smooth surface to avoid any blotted metal liquid ;

2.Good resistance to thermal shock;

3.Good oxidation resistance;

4.Good corrosion resistance; 

5. Special groove to be easy fixed.

6.Long working life





>= 2.8 g/cm3



Phase composition

β-Si3N4, Oxide





compressive strength


flexure strength


Thermal conductivity

16 w/m*k



Standard size (in stock):

OD50 x ID25 x Length 200-2000mm

OD45 x ID25 x Length 200-2000mm

OD30 x ID16 x Length 300-1500mm

OD28 x ID16 x Length 300-1500mm

OD25x ID12 x Length 300-1500mm

Delivery time: 3-5days


Choose T-Long, you will get best service and perfect products. 

Welcome the customers and distributors to visit our factory for testing and purchase!

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China (Mainland) | Manufacturer, Trading Company
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4 Transactions 3,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $31,000
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