W Type Radiant Tube Manufacturer | HT Alloy Furnace Radiant Tube | FH® Alloy

Product Overview
FH® Alloy manufactures custom W type radiant tubes for industrial heat treatment furnaces, designed for indirect heating applications where stable heat transfer, high-temperature resistance and long-term structural reliability are required.
This W-shaped radiant tube is manufactured from HT heat-resistant alloy with an overall size of 1860 × 610 mm. Its multi-pass W configuration provides a large effective radiant surface within a relatively compact furnace space, making it suitable for industrial furnaces requiring efficient and uniform heating.
Each radiant tube can be manufactured according to the customer's furnace dimensions, burner arrangement, flange design, tube diameter and operating conditions.

Product Specifications

Custom sizes, materials, tube diameters and flange structures are available according to drawings or furnace operating conditions.

What Is a W Type Radiant Tube?
A W type radiant tube is an indirect furnace heating component consisting of several straight tube sections connected through return bends to form a W-shaped gas path.
During furnace operation, hot combustion gases flow through the internal passage of the radiant tube. Heat is transferred through the heat-resistant alloy tube wall and radiated into the furnace chamber without allowing the combustion gases to directly contact the workpieces.
This design is commonly used when the furnace atmosphere or product surface needs to remain isolated from combustion products.
Compared with simpler straight or U-type designs, the W configuration can provide a larger radiant surface within the available furnace chamber.

Key Features of Our HT W Type Radiant Tube
HT Heat-Resistant Alloy Construction
The tube is manufactured from HT grade heat-resistant alloy, selected for demanding high-temperature furnace environments.
The material provides good resistance to:

• High-temperature oxidation
  
• Repeated heating and cooling cycles
  
• Thermal deformation
  
• Furnace atmosphere attack
  
• Long-term elevated-temperature service
  

Material selection can also be adjusted according to furnace temperature, atmosphere and expected service life.

Large Radiant Heating Surface
The W-shaped configuration creates multiple heating sections within one radiant tube assembly.
This helps increase the available radiant surface and allows furnace designers to make efficient use of the heating chamber.
The 1860 × 610 mm configuration shown here is manufactured for a customer's specific furnace installation.

Custom Engineered for Furnace Installation
Radiant tubes are not standard commodity products.
Dimensions normally need to match the existing:

• Furnace chamber
  
• Burner
  
• Recuperator
  
• Mounting flange
  
• Furnace wall
  
• Tube supports
  
• Gas flow requirements
  

FH® Alloy can manufacture W radiant tubes according to an existing 2D drawing, 3D model or physical sample.
If the customer does not have a complete drawing, operating information can also be provided for engineering evaluation.

Heavy-Duty Furnace Construction
The W radiant tube shown in the product image uses a robust multi-section construction with an integrated mounting flange.
Critical areas such as tube connections, return bends and flange interfaces are manufactured with attention to dimensional accuracy because these areas are particularly important for reliable operation under repeated thermal cycling.

Typical Applications
FH® Alloy W type radiant tubes can be used in a wide range of industrial heating systems, including:

• Heat treatment furnaces
  
• Continuous furnaces
  
• Annealing furnaces
  
• Carburizing furnaces
  
• Hardening furnaces
  
• Roller hearth furnaces
  
• Industrial heating furnaces
  
• Protective-atmosphere furnaces
  
• Metal processing furnaces
  

They are particularly suitable for applications where indirect heating and controlled furnace atmosphere are required.

Why HT Alloy Is Used for Furnace Radiant Tubes
Radiant tubes are continuously exposed to severe operating conditions.
During service, the tube may experience high internal gas temperatures, external furnace temperatures, oxidation and repeated thermal expansion and contraction.
Therefore, radiant tube material must provide more than room-temperature mechanical strength.
HT heat-resistant alloy is designed for elevated-temperature applications and can provide the combination of oxidation resistance and high-temperature structural stability required for industrial furnace components.
However, the correct material should always be selected according to actual operating conditions.
FH® Alloy can manufacture radiant tubes in different heat-resistant alloy grades depending on:
Operating temperature · Furnace atmosphere · Burner type · Tube dimensions · Heating cycle · Expected service life

Custom W Type Radiant Tube Manufacturing
FH® Alloy focuses on custom furnace components rather than only standard-size products.
For W type radiant tubes, we can customize:
Tube Configuration
W type, U type, I type, M type, P type, straight type and special bent radiant tube designs are available.
Dimensions
The following parameters can be manufactured according to your drawing:

• Overall length
  
• Overall width
  
• Tube outside diameter
  
• Tube wall thickness
  
• Center distance
  
• Bend radius
  
• Flange dimensions
  
• Mounting hole positions
  

Material
Different heat-resistant alloy grades can be supplied according to operating conditions and customer requirements.
Flange & Mounting Structure
Flanges, mounting plates and connection structures can be produced to match the existing furnace installation.

Radiant Tube Manufacturing & Quality Control
To improve dimensional consistency and service reliability, FH® Alloy controls the important manufacturing stages of each custom radiant tube.
Typical production and inspection procedures include:
Material preparation → Tube processing → Bend/connection preparation → Assembly → Welding → Dimensional inspection → Surface inspection → Final inspection → Packing
Depending on the design and customer specification, additional material or quality inspection documentation can also be provided.

Information Required for Quotation
For a faster quotation, please send us:

1. Radiant tube drawing
   
2. Tube outside diameter and wall thickness
   
3. Overall dimensions
   
4. Material specification
   
5. Operating temperature
   
6. Furnace atmosphere
   
7. Burner type
   
8. Required quantity
   

If a complete drawing is unavailable, you can send us photos of the existing radiant tube together with the main dimensions and furnace operating conditions.
Our engineering team can evaluate the information before production.

Why Choose FH® Alloy?
FH® Alloy specializes in manufacturing heat-resistant alloy furnace components for industrial heat treatment applications.
Our product range includes:

• Radiant tubes
  
• Furnace rollers
  
• Heat treatment fixtures
  
• Heat treatment trays
  
• Heat treatment baskets
  
• Furnace grids
  
• Centrifugal cast tubes
  
• Heat-resistant alloy castings
  
• Custom furnace accessories
  

We support drawing-based and application-based customization for replacement projects and new furnace projects.

Custom W Type Radiant Tubes from FH® Alloy
Looking for a W type radiant tube manufacturer for your heat treatment furnace?
FH® Alloy provides custom heat-resistant alloy radiant tubes based on your drawings and actual furnace operating conditions.
Send us your drawing, dimensions, material specification and working temperature for technical evaluation and quotation.

FAQ
Q1: Can you manufacture 1860 × 610 mm W-type radiant tubes?
Yes. FH® Alloy can manufacture this HT W-type radiant tube specification and can also customize the dimensions according to your furnace design.

Q2: What is the advantage of a W-type radiant tube?
The W-shaped structure creates a longer multi-pass heating path and a larger radiant surface within a relatively compact furnace installation area.

Q3: Can the tube diameter and wall thickness be customized?
Yes. Tube diameter, wall thickness, center distance, bend radius, overall dimensions, and connection structures can all be customized.

Q4: Can you supply the mounting plate and insulation blocks together?
Yes. The radiant tube can be supplied as a complete assembly with mounting plates, insulation blocks, studs, and related installation components.

Q5: Can HT material be replaced by another alloy?
Yes. Material can be selected according to operating temperature, furnace atmosphere, burner conditions, and expected service life.

Q6: Can you reproduce an existing W-type radiant tube?
Yes. Replacement tubes can be manufactured according to original drawings, samples, photographs, or measured dimensions.