Radiant Tube

Radiant Tubes represent advanced high-temperature heating technology specifically engineered for indirect heating applications in demanding industrial furnace environments. These sophisticated heating elements are manufactured from premium recrystallized FeCrAl (Iron-Chromium-Aluminum) or wrought NiCr (Nickel-Chromium) alloys using state-of-the-art powder-metallurgy processes or seamless mandrel extrusion techniques, ensuring exceptional material density, structural integrity, and thermal performance. The precision manufacturing process eliminates porosity and defects, creating seamless tubes capable of withstanding extreme thermal cycling and aggressive furnace atmospheres.

Operate up to 1,400 °C
Superior thermal shock & corrosion resistance
Custom straight or complex profiles

Technical Specifications

Tube Materials	FeCrAl, NiCr, SS310, Incoloy, Inconel, SiC, Si3N4
Manufacturing Process	Powder metallurgy, seamless mandrel extrusion
Configuration Options	Straight, U-shaped, W-shaped, P-shaped, custom profiles
Outer Diameter Range	25 mm to 200 mm (custom sizes available)
Wall Thickness Range	1 mm to 5 mm (application optimized)
Maximum Operating Temperature	1,400°C (2552°F) continuous operation
Standard Length Options	Up to 3,000 mm straight (custom lengths available)
Sealing Technology	Ceramic-to-metal seals, gasket flanges
Thermal Shock Resistance	Superior resistance to rapid temperature changes
Corrosion Resistance	Excellent resistance to oxidizing/reducing atmospheres
Service Life Expectancy	3 to 7+ years (application dependent)
Integration Compatibility	Bundle rod, cartridge heaters, gas burner systems
Quality Standards	Advanced materials testing and dimensional verification
Custom Engineering Options	Unlimited shapes, sizes, and integration features

Construction

High-Performance Tube Body: Seamless FeCrAl or NiCr alloy construction (OD 25–200 mm, wall thickness 1–5 mm) manufactured using advanced powder metallurgy or mandrel extrusion for exceptional strength and thermal performance.
Precision End Caps & Flanges: Machined high-temperature alloy end fittings with ceramic-to-metal seals providing leak-tight mounting, thermal expansion accommodation, and reliable long-term sealing performance.
Advanced Support Plate System: High-temperature ceramic or specialized alloy support brackets providing stable fixation, thermal shock resistance, and precise positioning for optimal heat distribution and structural integrity.
Specialized Integration Ports: Precision-engineered ports for inserting bundle heaters, rod heaters, thermocouples, gas flow tubes, and monitoring equipment, enabling comprehensive thermal management and process control.
High-Temperature Insulating Seals: Advanced ceramic fiber or compressed gasket sealing systems preventing heat loss and gas leakage while maintaining optimal thermal performance and operational safety.
Integrated Heating System: Optional integrated electric heating elements, gas burner assemblies, or heating element inserts providing complete heating solutions with optimized thermal efficiency and control capabilities.

Key Features

High emissivity for efficient infrared heat transfer
Minimal scaling and spalling at extreme temperatures
Replaceable without complete furnace shutdown
Compatible with bundle rod or cartridge heater integration
Custom end-seal and instrumentation port configurations
Superior thermal shock and corrosion resistance
Seamless construction eliminating potential failure points
Advanced metallurgy ensuring extended operational life
Leak-proof design for protective atmosphere applications
Precision manufacturing ensuring optimal dimensional control

Applications

Carburizing, nitriding, and annealing furnaces
Galvanizing and coating process furnaces
Aluminum melting, holding, and dosing furnaces
Steel heat treatment and stress relieving furnaces
Dental, diffusion, and laboratory ovens
Controlled atmosphere and vacuum furnaces
Heat treatment and research kilns
Automotive component heat treatment systems
Aerospace material processing furnaces
Powder metallurgy sintering applications