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Quick Details

  • Place of Origin: Henan, China (Mainland)
  • Shape: Pipe
  • Material: Other, silicon nitride
  • SiO2 Content (%): 0.1%
  • Al2O3 Content (%): 0.%
  • MgO Content (%): 0.1%
  • CaO Content (%): 0.1%
  • Refractoriness (Degree): 1770°< Refractoriness< 2000°
  • CrO Content (%): 0%
  • SiC Content (%): 0.1%
  • Model Number: SiN -06
  • Brand Name: STA
  • color: gray
  • size: customized
  • deliver time: fast
  • Certification: ISO ,CE

Packaging & Delivery

Packaging Details in wooden box with foam board ,or as per the requirement of the customers .
Delivery Time 10~20 days after receiving your payment .


Product Description


STA Silicon nitride sialon thermocouple protective tube ( protection tube) is formed by CIP biscuit, then machined to accurate dimension, and put it into Reaction-Sintered furnace for sintering. The special ceramic products by this modern advanced craft have the characteristics of high and equal density, good dimensional accuracy , etc. Silicon nitride is especially suitable for thermocouple protection tube measuring temperature of molten aluminum for its anti-fusion.


Silicon nitride is the hardest substances in the world because of its high intensity, especially the silicon nitride by hot pressing. It can stand up to high temperature and its intensity will not decline till 1200°C, silicon nitride can not be molten into eutectic mixture after heating until 1900°C. It has excellent chemical corrosion resistance, can resist almost all inorganic acid and caustic soda solution which is below 30%, as well as much organic acid. Silicon nitride is also a kind of material with high performance for electrical insulation.


Silicon nitride ceramics main products (Si3N4): Si3N4 silicon nitride thermocouple protection tube ,silicon nitride heating tube ,sialon silicon nitride riser tube &pipe .


Some silicon nitride ceramic  tube for thermocouple protection  properties:


1.)Lightweight (60% Lighter than Steel)


2.)High Fracture Toughness


3.)Wear Resistant


4.)High Dielectric Strength 


5.)Non Magnetic


6.)Corrosion Resistant


8.)Chemically Inert


9.)Low Coefficient of Thermal Expansion


10.)Thermal Shock Resistance.


 silicon nitride ceramic  tube for thermocouple protection specifcations:

 Technical Data: 

Property of Silicon nitride products




Volume density

g/cm 3


Young's modulus



Flexural strength






Thermal expansion coefficient



Fracture toughness

(Mpa*m -1 )


Thermal Conductivity




Some dimension silicon nitride ceramic tube / pipe /sleeve for thermocouple protection as below  :


Common size Si3N4 protection tubes
Outer diameterInner diameterLength
Remarks:the protection tubes can be customized 





Logging Tools


Drilling Components


Measuring Wheels


Check Valves


Proprietary Down Hole Components


 Silicon Nitride Thermocouple Protection Ceramic Tube  


Silicon nitride thermocouple protection tube is formed by CIP , then machined to accurate dimension, and put it into Reaction-Sintered furnace for sintering.

Silicon nitride thermocouple protection tube have the characteristics of high and equal density, good dimensional accuracy , etc. Silicon nitride is especially suitable for thermocouple protective cannula measuring temperature of molten aluminum for its anti-fusion.Our company can do any types as customers’ required.

Packaging & Shipping


Polyethylene foam and wooden case and wooden pallet or pack as customer's requirement .

Our Services


You can contact our trade manager at any time. Your problems can be responsed in 12 hours can we will give you solutions in 24 hours. Also if there’s amy problem about our products’ quality, we accept resending them again. Thank you.

Company Information


*STA Universe Group is bigger manufacturer, of which STA is a brand, is part of the STA Universe Group, a large, high-technology engineering group. It include many factories in China, such as Henan, Zhejiang, Shandong, many provinces.

*STA Heating Elements Factory of STA Group, of which STA is a brand, is a world-leading developer and manufacturer of products based on advanced heating elements.

*Our products and services contribute to our customers' productivity, reliability and cost efficiency while reducing their environmental impact in a wide variety of industry segments.

* In partnership with customers, we jointly develop products and materials that meet the challenges of the future.

*The Heating Elements Factory of STA Universe Group is a manufacturer of silicon carbide heating elements, trade name STA SiC and molybdenum disilicide heating elements, trade name STA MoSi2.

*The STA heating element has a maximum use temperature of 1700 C. The MoSi2 element can operate up to an element temperature of 1800 C, and new 1900 C.



Why STA:

1. We are a manufacturer, which can control the cost easiler than trade company also can give you anwer more quickly.

2. As a manufacturer, we know much in technique and can give you more support in technique problem.

3.Our products are complete in specifications with various of sizes.

4.We enjoy a good reputation in the customers in domestic and overseas markets.


Our factory can according to your need to customize different type required.

If you have any questions or new need of them, pls contact me at any time. The more information will be sent to you, thanks in advance.


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China (Mainland) | Manufacturer, Trading Company
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