FH® Radiant Tube Elbows for Industrial Heat Treatment Furnaces

Product Overview
The FH® Alloy Radiant Tube Elbow is a precision-cast high-temperature component designed for indirect heating systems used in industrial furnaces. Manufactured from EN 1.4848 heat-resistant steel alloy cast, it provides excellent resistance to oxidation, thermal fatigue, carburization, and creep deformation under continuous high-temperature service.

As a key connection component in U-Type, W-Type, P-Type, and custom-shaped radiant tube assemblies, the elbow ensures smooth gas flow while minimizing pressure loss and thermal stress, contributing to improved furnace efficiency and extended service life.

Whether replacing worn elbows or building complete radiant tube assemblies, FH® Alloy delivers reliable OEM solutions tailored to your furnace design.

Product Features
Premium 1.4848 Heat-resistant Steel Alloy
Manufactured from EN 1.4848 (GX40CrNiSi25-20), the elbow offers:

• Excellent oxidation resistance
  
• Outstanding thermal shock resistance
  
• High creep strength
  
• Superior carburization resistance
  
• Long service life in continuous furnace operation
  

Suitable for operating temperatures up to 1100°C.

Precision Casting for High Dimensional Accuracy
Each elbow is produced using advanced casting technology to ensure:

• Uniform wall thickness
  
• Smooth internal gas passage
  
• Accurate bending radius
  
• Reduced flow resistance
  
• Excellent assembly compatibility
  

Precision machining is available upon request.

Optimized Gas Flow Design
The large-radius curved profile helps:

• Reduce combustion gas pressure loss
  
• Improve burner efficiency
  
• Promote uniform heat distribution
  
• Lower thermal stress concentration
  

This contributes to higher heating efficiency and longer radiant tube life.

Excellent High-Temperature Durability
Compared with ordinary stainless steel elbows, FH® Alloy 1.4848 elbows provide:

• Better resistance to repeated heating cycles
  
• Reduced deformation
  
• Lower cracking risk
  
• Longer maintenance intervals
  
• Stable performance under severe furnace conditions
  

Custom Manufacturing Available
FH® Alloy manufactures both standard and custom elbows according to customer drawings.
Customization includes:

• Outside diameter
  
• Wall thickness
  
• Center radius (CLR)
  
• 45°, 90°, 180° bends
  
• Custom bending angles
  
• Machined ends
  
• Weld preparation
  
• Complete radiant tube assemblies
  

Technical Specifications

Chemical Composition (1.4848)

Applications
FH® Alloy Radiant Tube Elbows are widely used in:

• Continuous Annealing Furnaces
  
• Bright Annealing Furnaces
  
• Roller Hearth Furnaces
  
• Mesh Belt Furnaces
  
• Carburizing Furnaces
  
• Nitriding Furnaces
  
• Bell Furnaces
  
• Galvanizing Lines
  
• Heat Treatment Furnaces
  
• Steel Strip Processing Lines
  

Compatible Radiant Tube Types
Our elbows can be integrated into:

• U-Type Radiant Tubes
  
• W-Type Radiant Tubes
  
• P-Type Radiant Tubes
  
• Double-P Radiant Tubes
  
• Serpentine Radiant Tubes
  
• Custom Fabricated Radiant Tubes
  

Why Choose FH® Alloy?
Professional Radiant Tube Manufacturer
FH® Alloy specializes in the manufacturing of heat-resistant alloy furnace components for global industrial furnace manufacturers.

Our advantages include:

• More than 20 years of manufacturing experience
  
• OEM & ODM capability
  
• Complete alloy material solutions
  
• Precision casting and machining
  
• Strict quality inspection
  
• Fast production and worldwide delivery
  

Quality Control
Every Radiant Tube Elbow undergoes:

• Raw material verification
  
• Chemical composition analysis
  
• Dimensional inspection
  
• Surface defect inspection
  
• Heat treatment (if required)
  
• Machining inspection
  
• Packaging inspection before shipment
  

Packaging & Delivery

• Anti-rust protection
  
• Bubble wrap protection
  
• Export plywood case
  
• Customized packaging available
  
• Sea, air and express shipment supported
  

FAQ
Q1. What material is used for the radiant tube elbow?
Our standard material is EN 1.4848 heat-resistant steel alloy cast , offering excellent oxidation and thermal fatigue resistance for furnace temperatures up to 1100°C.

Q2. Can you manufacture according to our drawings?
Yes. FH® Alloy provides complete OEM manufacturing based on customer drawings, samples, or furnace specifications.

Q3. What radiant tube systems are compatible with this elbow?
Our elbows are suitable for U-Type, W-Type, P-Type, Double-P, Serpentine, and other custom radiant tube assemblies.

Q4. Can you machine the connection ends?
Yes. We provide machining services for bevels, flanges, welded joints, and customized connection dimensions.

Q5. Do you provide complete radiant tube assemblies?
Yes. In addition to individual elbows, FH® Alloy manufactures complete radiant tube systems, including:

• Straight radiant tubes
  
• U-type radiant tubes
  
• W-type radiant tubes
  
• Burner tubes
  
• Recuperator tubes
  
• Radiant tube assemblies
  

Request a Custom Quote
FH® Alloy manufactures standard and custom 1.4848 radiant tube elbows for industrial furnace OEMs, maintenance contractors, and heat treatment plants worldwide.
Contact us today with your drawing or specifications for a fast quotation and engineering support.