STA OEM nitride bonded silicon carbide tube NSIC thermocouple protection tube

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US $1.2-120 / Pieces | 50 Piece/Pieces (Min. Order)
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Quick Details
Place of Origin:
Henan, China (Mainland)
Silicon Carbide (SiC)
SiO2 Content (%):
Al2O3 Content (%):
MgO Content (%):
CaO Content (%):
Refractoriness (Degree):
Common (1580°< Refractoriness< 1770°)
CrO Content (%):
SiC Content (%):
Model Number:
Brand Name:
Bulk Density:
Packaging & Delivery
Packaging Details
By wooden case / by wooden pallet/ could pack as customer's requirements
shanghai or qingdao port
Lead Time :
15-20 day after confirm the order

STA high quality  nitride bonded silicon carbide NSIC thermocouple protection tube

Product Description


 STA  supplies thermocouple protection tubes made of RSiC, SiSiC & NBSiC from its China based factories. We provide these products not only for China domestic customers, but also to worldwide.Silicon nitride (Si3N4) bonded silicon carbide (SiC) material is produced by adding industrial silicon paste into artificial aggregate.


 our products material:

1. Reaction Sintered Silicon carbide (RBSIC)

2. Recrystallized Silicon Carbide ceramic (RSIC)

3.Silicon  Nitride Bonded Silicon Carbide ceramic (NBSIC)

4. Sintered Silicon Carbide (SSiC)



Features of silicon carbide tube


1. Best producing technology in China. Our tubes can be instead of Japanese tubes in Aluminium melt furnace.

2.Very smooth surface to avoid any blotted metal liquid.

3. Good thermal conductivity.

4. High tempreature strength

5. Special groove to be easy fixed.


technical  Parameters


1. Reactive Sintered Silicon Carbide  RBSIC/SiSiC  tube 


SiSiC  protection tubes are suitable for metallurgy, ceramics, boilers, chemical and other industries for temperature measurement. SiSiC products get very high density & very low apparent porosity, and excellent corrosion resistance, its working temperature is up to 1380℃.

OD: 10-45mm;   Length: Max 1,600mm.


temperature of applicationC1380
open porosity%<0.1
bending strengthMpa250(20C)
modulus of elasticityGpa330(20C)
thermal conductivityW/m.k45(1200C)
coefficient of thermal expansionK-1*10-64.5
rigidity 13
acid-proof alkaline Excellent



2. silicon carbide bonded silicon nitride  tube(NSIC tube ) 


The operating temperature of silicon nitride bond silicon carbide(NBSIC) protection tube is 1400C, its thermal stability is very good. The properties of its thermal shock resistence is even better than ReSiC products. Its anti-oxidation, acid and alkali resistant, wear-resistant, and flexural strength is very high. It’s utilized widely in the field of non-ferous metal smelting, such as aluminum (Al), lead (Pb), zinc (Zn), copper (Cu) industries, working not only as thermocouple protection sheath, but also hot metal riser. It’s also can be used in certain high-temperature kiln & furnaces. As thermocouple protection tube, the outer diameter range 20-70mm, length max 1600mm.


OD: 20-70mm;   Length: Max 1,600mm.



2.8 g/cm3



Phase composition

β-Si3N4, Oxide





compressive strength


flexure strength


Thermal conductivity

16 w/m*k



3. Re-crystallized SiC  tube (RSIC tube )


RSiC products have excellent properties of high bending strength following rising temperature, and good thermal shock resistance, oxidization resistance, corrosion resistance and so on, .the working temperature is up to 1600℃.

OD: 20-60mm ;  Length: Max 2,000mm.

Contents: RSiCVol%> 99
Bulk Densityg/cm 32.65-2.75
Apparent Porosity%15
Modulus of rupture at 20°CMPa90-100
Modulus of rupture at 1200°CMPa110
Modulus of rupture at 1350°CMPa120
Modulus of Crushing at 20°CMPa300
Thermal conduction at 1200°Cw. m-1. k-136.6
Thermal Expansion at 1200°Ca×10-6/°C4.69
Thermal Shock Resistance at 1200°C Good
Max. Working Temperature°C1650(oxid)



standard Size:

OD: 26/27/28mm
ID: 16/17/18mm


or as per requirment(customized)


Attention:espect for Silicon nitride (Si3N4) bonded silicon carbide (SiC) tube,we also

produce silicon  carbide protection tude, SSiC) Sintered Silicon Carbide tube, (RBSiC / SiSiC) Reaction Bonded Silicon Carbide tube, (RSiC) Recrystallized Silicon Carbide tube.

if you have any needs ,please contact me at any time without hesitste .




High corrosion resistance, great strength in operating temperature range, long service life, high thermal conductivity, no pollution of aluminum alloy, resisting wetting by molten non-ferrous metals such as aluminum, coppor, zinc. etc


Thermocouple protection tubes Gas insert tubes Combustion tubes Reactor core tubes Hanging and support bars for high temperature firing such as pottery .




Packaging & Shipping


a.) The products are packed in wooden cases, and the wooden cases are tied up by 6 steel belts, then the wooden cases are put on fumigation wooden pallet.

b.) We also pack products as custom request


Company Information

    STA  universe group is founded in 2001,dedicating to innovation ang creating a world famous brand.And provide verious products for customers. we are the professional manufacturer of silicon nitride bonded silicon carbide tube.