Place of Origin:
China
Brand Name:
FH®
Certification:
ISO 9001, ISO14001
Model Number:
FH 3030
Straight Radiant Tube with Round Flange for Industrial Furnaces
Custom Heat-Resistant Radiant Tube Assembly | Drawing-Based Manufacturing | FH® Alloy
FH® Alloy manufactures straight radiant tubes with custom round flange connections for industrial furnaces, heat treatment equipment, and indirect heating systems.
This type of radiant tube features a long straight tube body combined with a machined circular flange, end connection, and supporting structure, making it suitable for furnace systems that require accurate installation, reliable sealing, and convenient maintenance.
All dimensions, materials, flange configurations, and support structures can be customized according to customer drawings and actual furnace operating conditions.
Product Overview
The straight radiant tube is designed for industrial furnace applications where the heating source needs to be separated from the furnace working chamber.
Compared with bent radiant tube designs, the straight structure offers:
FH® Alloy supports OEM and replacement manufacturing based on customer drawings, samples, or measured dimensions.
Typical Specifications
| Item | Specification |
| Product Name | Straight Radiant Tube |
| Product Type | Straight-Type Furnace Radiant Tube |
| Tube Structure | Straight Cylindrical Tube |
| Flange Type | Round Flange / Custom Flange |
| Material | Heat-Resistant Stainless Steel / High-Temperature Alloy / Nickel-Based Alloy |
| Outside Diameter | Customized |
| Wall Thickness | Customized |
| Flange Diameter | Customized |
| Flange Thickness | Customized |
| Support Structure | Customized |
| Manufacturing | Fabrication / Welding / Machining |
| Application | Industrial Furnace / Heat Treatment Furnace |
| Customization | OEM / Drawing-Based Manufacturing |
| Manufacturer | FH® Alloy |
Straight Radiant Tube Dimensions
The dimensions of straight radiant tubes can be customized according to the furnace layout, burner connection, mounting structure, and installation space.
Typical dimensional parameters include:
Drawing Reference
OD = Outside Diameter
WT = Wall Thickness
L = Overall Length
FD = Flange Diameter
FT = Flange Thickness
PCD = Pitch Circle Diameter
All dimensions can be customized according to customer drawings.
Material Options
Radiant tube material should be selected according to actual operating conditions rather than furnace temperature alone.
FH® Alloy can manufacture straight radiant tubes using different heat-resistant alloys, including:
Important selection factors include:
If the material has not yet been determined, customers can provide their furnace conditions for material selection support.
Round Flange & Support Structure
One of the main features of this product is the machined round flange connection.
Depending on furnace design, the flange can be customized for:
The support or reinforcing structure around the tube end can also be customized to help improve installation stability.
For replacement projects, FH® Alloy can manufacture the flange and support geometry according to the original product drawing or sample.
Indirect Heating Applications
Straight radiant tubes are commonly used in industrial furnace systems where direct flame contact with the processed parts should be avoided.
During operation, heat is transferred through the radiant tube wall and then radiated into the furnace chamber.
This arrangement can help provide:
Typical Applications
Straight radiant tubes can be used in:
They are especially suitable for furnace systems requiring straight tube installation with flange-mounted connections.
Manufacturing Process
Depending on the product design, manufacturing may include:
Material Preparation → Tube Forming / Casting → End Component Fabrication → Flange Machining → Welding → Support Assembly → Dimensional Inspection → Surface Cleaning → Final Inspection
Key manufacturing controls include:
These factors are important for installation accuracy and long-term furnace operation.
Key Advantages
Custom Round Flange Design
Flange diameter, thickness, bolt holes, and mounting details can be manufactured according to the customer’s furnace.
Straight Tube Structure
Suitable for furnace systems requiring simple, stable, and easy-to-maintain radiant tube installation.
Multiple Heat-Resistant Alloy Options
Material can be selected according to actual furnace temperature and atmosphere.
Custom Support Assembly
End supports and reinforcing structures can be fabricated according to installation requirements.
Replacement Manufacturing
Existing radiant tubes can be reproduced according to drawings, samples, photos, and dimensional measurements.
OEM Production
Suitable for furnace manufacturers, heat treatment plants, and industrial equipment companies.
Quality Control
Depending on customer requirements, inspection can include:
Additional testing requirements can be agreed before production.
Why Choose FH® Alloy?
FH® Alloy specializes in custom furnace components and heat-resistant alloy products for industrial heating and heat treatment applications.
Our radiant tube range includes:
We also manufacture:
Request a Quote
Need a custom straight radiant tube with round flange for your furnace?
Please send us:
Send your drawing to FH® Alloy for technical review and quotation.
FAQ
Q1: Can you manufacture straight radiant tubes according to our drawings?
Yes. FH® Alloy supports custom production according to customer drawings, samples, and dimensional information.
Q2: Can the round flange be customized?
Yes. Flange diameter, thickness, PCD, bolt hole quantity, hole diameter, and connection dimensions can all be customized.
Q3: Can you manufacture the support structure shown at the tube end?
Yes. End supports, brackets, reinforcing structures, and other mounting components can be manufactured according to the customer’s design.
Q4: What materials are available?
Material options can include 1.4848, 1.4849, 1.4852, 2.4879, heat-resistant stainless steels, high-Ni alloys, and other high-temperature alloy grades.
Q5: Can you manufacture replacement tubes for existing furnaces?
Yes. Customers can provide original drawings, samples, product photos, or measured dimensions for replacement manufacturing.
Q6: How do we select the correct material?
Please provide the operating temperature, furnace atmosphere, burner conditions, and expected service life. FH® Alloy can recommend a suitable material accordingly.
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