U-Type Radiant Tubes for Steel Heat Treatment & Metallurgical Furnaces | FH®

FH® U-type radiant tubes are high-performance heating elements used in indirect heating furnace systems. They are designed to deliver uniform heat distribution, excellent thermal efficiency, and long service life in high-temperature industrial environments.
Compared with direct-fired heating, U-type radiant tubes provide cleaner, more controlled heating, making them ideal for precision heat treatment processes.
Our radiant tubes are widely used in carburizing, annealing, and continuous furnace systems across global industries.

⚙️ Key Features & Advantages
✔ Excellent High-Temperature Performance
Stable operation under continuous working temperatures up to 1000°C–1200°C depending on alloy grade.
✔ Uniform Heat Distribution
U-shape structure ensures balanced heating and improved furnace temperature consistency.
✔ High Thermal Efficiency
Optimized design reduces energy loss and improves combustion efficiency.
✔ Superior Oxidation & Corrosion Resistance
Long service life under harsh furnace atmospheres.
✔ Reduced Maintenance Cost
High durability reduces replacement frequency and downtime.

🧱 Material Options
FH® manufactures U-type radiant tubes using advanced heat-resistant alloys:

• Heat-resistant stainless steel (310S, 253MA)
• Nickel-based alloys (Inconel 601 / 600 / 800 series)
• High-temperature cast alloys
• Custom engineered alloy grades for specific furnace conditions

🏭 Applications
Our U-type radiant tubes are widely used in:

• Carburizing furnaces
• Annealing furnaces
• Tempering furnaces
• Continuous heat treatment lines
• Roller hearth furnaces
• Industrial gas-fired furnace systems
• Metallurgical processing equipment

📦 Product Types
FH® provides multiple radiant tube configurations:

• Standard U-type radiant tubes
• Double U-type radiant systems
• W-type radiant tubes
• P-type radiant tubes
• Custom-designed furnace heating tubes

📊 Why FH® Radiant Tubes?
✔ Advanced high-temperature alloy manufacturing
✔ Precision casting and fabrication technology
✔ Stable performance under thermal cycling
✔ High energy efficiency design
✔ OEM / ODM customization support
✔ Export experience to Europe, USA, and global markets

🛠 Custom Engineering Capability
We design radiant tube systems based on:

• Furnace type and heating system
• Working temperature and atmosphere
• Burner configuration
• Tube size, thickness, and layout
• Energy efficiency requirements

Our engineering team provides optimized designs to improve heating uniformity and extend service life.

🔬 Quality Control
Each FH® U-type radiant tube undergoes strict inspection:

• Material chemical composition testing
• High-temperature performance testing
• Pressure and leakage testing
• Dimensional accuracy inspection
• Thermal fatigue resistance evaluation

🌍 OEM & Industrial Supply Partner
FH® is a trusted OEM supplier for furnace manufacturers and heat treatment plants worldwide.
We support:

• OEM manufacturing services
• Custom engineering collaboration
• Long-term bulk supply agreements
• Private labeling solutions

Genuine Photos of FH® Radiant Tubes

📩 Contact Us

Wuxi Junteng Fanghu Alloy Technology Co., Ltd. (FH®)
📍 China – Industrial Heat-Resistant Alloy Manufacturing Base
📧 Email: ramos@alloy-casting.com
🌐 Website: https://www.fhalloycasting.com

👉 Send your drawings or furnace specifications for a fast quotation within 24 hours.