304 stainless steel high frequency welded finned tube is a high-performance heat transfer component manufactured by welding stainless steel spiral fins onto a 304 stainless steel base tube through high frequency induction welding technology.
The fin and tube are metallurgically bonded together, creating a strong connection with minimal thermal resistance.
Compared with traditional wrapped fin tubes or brazed fin tubes, SS304 high frequency welded finned tubes provide:
They are widely used in heat exchangers, air heaters, waste heat recovery systems, food processing equipment, pharmaceutical facilities, and chemical industries.
The base tube is made of 304 austenitic stainless steel (06Cr19Ni10).
304 stainless steel contains:
The material forms a dense chromium oxide passive film on the surface, providing excellent corrosion resistance.
Common advantages:
Typical base tube:
| Parameter | Specification |
|---|---|
| Material | SS304 / 06Cr19Ni10 |
| Tube Type | Seamless stainless steel tube |
| Outer Diameter | 16–219 mm |
| Wall Thickness | 1.5–3 mm |
| Working Temperature | -40℃ to 450℃ |
The external fins are manufactured from 304 stainless steel strips and continuously welded around the tube surface.
Features:
Typical fin specifications:
| Parameter | Range |
|---|---|
| Fin Material | SS304 |
| Fin Thickness | 0.6–1.0 mm |
| Fin Height | 8–25 mm |
| Fin Pitch | 2–8 mm |
| Fin Type | Solid fin / Serrated fin |
Serrated fins can further improve turbulence and enhance heat transfer performance.
304 stainless steel high frequency welded finned tubes are manufactured using high frequency induction welding technology.
The process includes:
The welding process does not require filler metal.
Advantages:
Typical fin welding rate:
≥95% bonding coverage
Compared with carbon steel finned tubes, SS304 finned tubes are suitable for environments where corrosion resistance is critical.
Applications:
Advantages:
✔ No rust contamination
✔ Easy cleaning
✔ Long service life
✔ Suitable for hygienic applications
The spiral fin structure greatly increases the external heat transfer area.
Compared with smooth tubes:
High frequency welded construction ensures:
Unlike traditional wrapped fin tubes, welded fins are permanently attached to the tube.
Benefits:
Suitable for:
304 stainless steel maintains reliable mechanical properties under elevated temperatures.
Typical operating range:
-40℃ to 450℃
Suitable for:
The smooth stainless steel surface provides:
Especially suitable for:
| Item | Specification |
|---|---|
| Product Name | 304 Stainless Steel High Frequency Welded Finned Tube |
| Base Tube Material | SS304 / 06Cr19Ni10 |
| Fin Material | SS304 |
| Welding Method | High Frequency Induction Welding |
| Tube Diameter | 16–219 mm |
| Wall Thickness | 1.5–3 mm |
| Fin Thickness | 0.6–1.0 mm |
| Fin Height | 8–25 mm |
| Fin Pitch | 2–8 mm |
| Pressure Rating | 2.0–3.0 MPa |
| Temperature Range | -40℃ to 450℃ |
| Fin Type | Smooth / Serrated |
Applications:
Advantages:
Used for:
Requirements:
Suitable for:
Applications:
Advantages:
Used in:
Benefits:
We provide customized stainless steel finned tube solutions featuring:
✔ 304 stainless steel construction
✔ High frequency welded spiral fins
✔ Strong metallurgical bonding
✔ High corrosion resistance
✔ High temperature capability
✔ Customized tube diameter and fin dimensions
✔ Suitable for harsh industrial environments
