SiC Radiant Tubes for High-Performance Industrial Furnaces
Newthink SiC radiant tubes are engineered for indirect heating in steel processing and heat treatment furnaces. Made from RBSiC, they withstand working temperatures up to 1,380℃.
Moreover, they provide 3 times higher thermal conductivity than iron with outstanding thermal shock resistance. High flexural strength and creep resistance effectively prevent deformation over long-term use under high temperatures. Newthink radiant tube will help your furnace operators eliminate frequent failures and reduce maintenance downtime to maximize energy efficiency.
Silicon Carbide Radiant Tube Product Types
Get to know our products – silicon carbide radiant tubes providing high stability in extreme conditions of industrial heating processes.
Great flexural strength and can withstand 1,380℃ in heating systems.
Improves efficiency of heat treatment & steel treatment furnaces.
Features zero porosity and high density to prevent gas leakage.
Provides absence of contamination in continuous conditions.
Transfers heat 3 times faster than ordinary iron tubes.
Is resistant to high-temperature creep and thermal deformation.
Industrial Applications of Silicon Carbide Radiant Tubes
Silicon carbide radiant tubes are engineered for gas-tight, high-temperature, and highly corrosive atmospheres.
Steel Processing & Heat TreatmentEnables precise indirect heating, isolating steel from direct flames and combustion gases.
High-Temperature Heat Exchange SystemsThermal conductivity and corrosion resistance in environments exceeding 1,400℃.
Industrial Kilns & Thermal ProcessingResists continuous thermal cycling, ensuring stable operation up to 1,380℃.
Non-Ferrous Metal SmeltingDurable indirect heating elements and linings for harsh metal distillation furnaces.
Features of Silicon Carbide Radiant Tubes
RBSiC radiant tubes become an ideal indirect heating solution for heavy-duty industrial furnaces, which operate under severe thermal and corrosive conditions.
Withstand continuous operation up to 1,380℃ without failure.
Conduct heat 3 times faster than traditional iron tubes.
Endure rapid heating & cooling cycles without cracking.
Flexural strength increases to 280 MPa at 1,200℃.
Avoid sagging, bending, and deformation at high temperatures.
High Mohs hardness to withstand severe mechanical wear.
Gas-tightness with density ≥3.02 g/cm3 and porosity <0.1%.
Resistant to harsh acids, alkalis, and oxidation effortlessly.
Why Choose Newthink Silicon Carbide Radiant Tubes?
Newthink provides our customers with complete thermal assembly solutions to satisfy demanding industrial furnace environments.
With advanced ceramic manufacturing experience since 2012, Newthink’s products have been exported to 40+ countries. We deliver proven and highly reliable furnace components.
Newthink manufactures custom radiant tubes according to your precise engineering drawings, special dimensions, working conditions, and performance specifications.
Operating under ISO management systems, our professional team thoroughly tests every tube before packaging. We deliver zero-defect quality to you.
Implementing lean production controls in our workshops, Newthink lowers manufacturing costs to provide competitive pricing and maximum cost savings.
Newthink protects ceramic tubes with heavy-duty plywood crates lined with thick foam padding. This can eliminate risks of breakage during international transport.
Our international business team provides 24-hour online support. Alongside flexible production scheduling, we enable fast 15-day delivery for urgent orders.
Silicon Carbide Radiant Tubes Production Workshop
Newthink’s ceramic production workshop is equipped with advanced precision forming and high-temperature sintering facilities. Our mass manufacturing ability ensures seamless consistency and dependable lead times.
Our workshop uses state-of-the-art high-precision measuring systems. Every tube undergoes rigorous quality inspection before shipment. Newthink aims to reduce deviations in products’ dimensions to deliver reliable thermal performance for your most demanding furnace operations.
Silicon Carbide Radiant Tube Brings High Thermal Efficiency
SiC radiant tubes are engineered to withstand continuous temperatures up to 1,380℃. They deliver 3 times higher thermal conductivity than traditional metal alternatives, with excellent thermal shock resistance to prevent cracking during rapid thermal cycling.
Our advanced silicon carbide ceramic radiant tube can maintain uniform heat distribution to drastically optimize fuel efficiency. This will minimize unexpected furnace downtime and lower your overall costs.
Proven Performance of Silicon Carbide Radiant Tube in Heat Treatment
A heat treatment facility previously used stainless steel tubes. But they experienced frequent sagging, cracking, and premature failure. They contacted us to replace these tubes with modified SiC radiant tubes.
Engineered with a reinforced wall thickness to 7mm, new SiC radiant tubes greatly improved strength and thermal insulation. These ceramic tubes provided deformation resistance to extend service life, enhancing overall furnace heating efficiency.
Protective Packaging for SiC Radiant Tube Delivery
Industrial ceramic components are brittle. They require specialized protection against transit vibration and impact damage. Every silicon carbide radiant tube employs customized shock-resistant packaging, including thick foam padding, protective cushioning and heavy-duty plywood crates. All these packages are tailored to component dimensions to ensure no breakage during long-distance international shipment.
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Meet Us at Exhibitions and Factory Visits
Newthink actively participates in major industrial and advanced ceramics exhibitions worldwide throughout the year, such as Italy, Germany, Japan and Vietnam, meeting directly with our customers.
We welcome you visit our factory to witness our control of quality and discuss our future cooperation. Through frequent interactions at global events and visits, we’ve earned deep trust from clients in 40+ countries and regions.
Technical Specifications for Silicon Carbide Radiant Tubes
Compare physical, thermal, and mechanical properties across RBSiC, NBSiC, SSiC, and RSiC to select the optimal silicon carbide tube for your application.
| Item | Unit | Data | |||
| RBSiC(SiSiC) | NBSiC | SSiC | RSiC | ||
| Max service temperature | ℃ | 1380 | 1450 | 1650 | 1620 |
| Density | g/cm3 | 3.02 | 2.75-2.85 | 3.08-3.16 | 2.65-2.75 |
| Open porosity | % | 0 | 13-15 | 0 | 15-18 |
| Bending strength 20℃ | Mpa | 250 | 160 | 380 | 100 |
| Bending strength 1,200℃ | Mpa | 280 | 180 | 400 | 120 |
| Modulus of elasticity 20℃ | Gpa | 330 | 580 | 420 | 240 |
| Modulus of elasticity 1,200℃ | Gpa | 300 | / | / | 200 |
| Thermal conductivity 1,200℃ | W/m·k | 45 | 19.6 | 100-120 | 36.6 |
| Coefficient of thermal expansion | K–1x10-6 | 4.5 | 4.7 | 4.1 | 4.69 |
| HV | kg/mm2 | 2115 | / | 2800 | / |
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Silicon carbide radiant tubes outperform traditional metal tubes with 3 times higher thermal conductivity. They also possess superior oxidation resistance without high-temperature sagging at 1,380℃. In contrast, metal tubes bend and crack more easily under thermal stress. Using SiC radiant tubes can significantly reduce furnace downtime, extending operational lifespan and reducing maintenance costs.
1,380℃. At temperatures up to 1,200℃, its flexural strength actually increases to 280 MPa. This ensures stable structure and reliable thermal performance in heavy-duty heating systems.
Due to rapid thermal expansion, intense thermal shock, and material oxidation during frequent heating cycles.
Traditional alloys sag and fatigue under high stress. Silicon carbide radiant tubes feature a low thermal expansion coefficient and excellent thermal shock resistance to eliminate cracking and failure.
It resists thermal shock through ultra-low thermal expansion (4.5×10-6/K) and exceptionally high thermal conductivity (45W/m·K). This allows a rapid, uniform heat dissipation during sudden temperature fluctuations, preventing localized internal stresses and thermal fatigue.
A silicon carbide radiant tube usually lasts 3 to 5 times longer than a stainless steel tube under extreme operating conditions.
Choose RBSiC Silicon Carbide Radiant Tubes for temperatures up to 1,380℃. RBSiC offers unmatched cost-effectiveness, superior mechanical strength, and high thermal conductivity.
If your furnace operates above 1,380℃ or in extreme acidic environments, sintered SSiC is recommended.
For most heat-treatment furnaces, RBSiC is the optimal choice.
Reaction Bonded SiC contains 8%-15% free unreacted silicon. Above 1,380℃, this free silicon begins to soften and melt, causing a drop in mechanical strength. Staying below 1,380℃ ensures your silicon carbide radiant tube maintains maximum rigidity and continuous long-term durability.
Yes, absolutely. We fully customize Silicon Carbide Radiant Tubes according to your exact engineering drawings, including outer/inner diameters, custom wall thicknesses, and specific lengths. Newthink delivers tailored precision solutions.
SiC radiant tubes transfer heat faster and more uniformly into the furnace chamber with a thermal conductivity 3 times higher than iron. This rapid heat exchange minimizes energy loss, yielding substantial operational cost savings.
To prevent mechanical damage, always handle ceramic tubes with protective gloves and avoid hard impacts.
During installation, ensure precise alignment and stress-free supporting fixtures.
We ship SiC radiant tubes in custom foam-padded plywood crates, ensuring safe arrival and seamless installation.
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