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Quick Details

  • Place of Origin: Henan, China (Mainland)
  • Type: Ceramic Tubes
  • Application: Industrial Ceramic
  • Model Number: STA-359U
  • Brand Name: STA
  • color: grey
  • manufacturer: professional

Packaging & Delivery

Packaging Details 1. plywood case and pallet
2.According to customers' requirement
Delivery Time within 10-15 days after receiving the payment
Product Description

factory  price Silicon nitride heating prodection tube Si3N4 tube


    Silicon nitride is a typical structural ceramic . Silicon nitride riser tube has many excellent characteristics, such as corrosion resistance, low thermal-expansion coefficient and long service life .

      Silicon nitride has excellent shock resistance ,corrosion resistance and abrasion resistance . As to the lifetime , silicon nitride riser tube/stalk tube is 3-5 times than other ceramic tubes , like this , it can mostly reduce the times of replacement and save money and time.


* High temperature resistance
* No chemical change in aluminum liquid 
* No pollution for aluminum liquid
* Low thermal conductivity
* Uneasily oxidized


Manufacture technology
Reaction bonded silicon nitride (RBSN)
Hot pressed silicon nitride (HPSN)
Sintered silicon nitrides (SSN) & (GPS- SSN )




Technical data



SSN        GPS-SSN         HPSN        RBSN

Density (g.cm-3)

3.28            3.30               3.23           2.5

Young’s Modulus (GPa)

285              320                315           189

Bend Strength (MPa)

675              750                850           440

Fracture Toughness K1c  (MPa.m0.5)

6                   7                    8             2.5

Hardness (GPa)

16                 16                  16           7.2

Thermal Expansion Coefficient  (x 10-6/°C)

3.2               3.2                 3.2           3.2

Thermal Conductivity (W/m.K)

25                 30                  30            14

Maximum Temperature (°C) for application

Dielectric Constant

Abrasive Wear resistance Parameter

1150            1150              1150         1100

9                     9                   9            7.5

1110            1130              1120          360



Our Services

1) 24 hours service for customers.
2) quality issue, we accept reworking if quality is not reach your requirements.
3) sample available for free
4) OEM service acceptable. welcome your artwork.


Company Information

   STA  universe group is founded in 2001,dedicating to innovation ang creating a world famous brand.And provide verious products for customers.




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China (Mainland) | Manufacturer, Trading Company
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Supplier's Trade Assurance Limit: US $29,000
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