A high frequency welded finned tube radiator is an efficient industrial heat transfer device manufactured by welding steel fins onto a steel base tube through high frequency induction welding technology.
The welded joint forms a metallurgical bond between the fin and tube, creating almost zero thermal resistance and ensuring excellent heat transfer performance.
Compared with traditional steel radiators and bare tube heating pipes, high frequency welded finned tube radiators provide:
They are widely used for industrial heating, workshop heating, warehouse heating, greenhouse heating, drying systems, and waste heat recovery applications.
The base tube works as the pressure-bearing heat transfer channel.
Common materials:
Typical specifications:
| Parameter | Specification |
|---|---|
| Tube diameter | DN20–DN50 |
| Wall thickness | 1.5–2.5 mm |
| Working pressure | 1.0–1.6 MPa |
The steel tube provides reliable mechanical strength for steam, hot water, and thermal oil systems.
The fins are made of low carbon steel strips and continuously welded around the tube surface.
Features:
Typical parameters:
| Parameter | Range |
|---|---|
| Fin height | 15–25 mm |
| Fin thickness | 1.2–1.5 mm |
| Fin pitch | 5–10 mm |
| Fin ratio | 5–10 |
The expanded fin surface can provide 3–12 times more heat transfer area than bare tubes.
The fin and tube are connected using high frequency resistance welding technology.
Typical welding frequency:
200–400 kHz
Advantages:
This ensures stable operation under continuous heating conditions.
To improve corrosion resistance and service life, different surface treatments can be selected:
Advantages:
Suitable for:
Recommended for:
The direct welded structure eliminates thermal resistance between fin and tube.
Benefits:
Compared with traditional heating pipes, heating speed can improve by more than 30%.
Typical heat output:
1500–2200 W/m under 0.8 MPa steam conditions
Steel high frequency welded finned tube radiators are designed for demanding industrial environments.
Performance:
Suitable heating mediums:
Due to the enlarged heat transfer area:
Compared with traditional bare tube systems:
Installation options:
The high frequency welded connection provides:
Service life:
15 years or longer under normal operating conditions
Maintenance mainly includes:
| Item | Specification |
|---|---|
| Product Type | Steel High Frequency Welded Finned Tube Radiator |
| Tube Material | Carbon Steel / 20# / Q235B |
| Tube Diameter | DN25 / DN32 / DN40 |
| Wall Thickness | 2.0 mm |
| Fin Material | Carbon Steel Strip |
| Welding Method | High Frequency Induction Welding |
| Working Pressure | ≤1.6 MPa |
| Steam Temperature | ≤300℃ |
| Hot Water Temperature | ≤120℃ |
| Heat Output | 800–2000 W/m |
| Surface Treatment | Powder Coating / Galvanizing |
Used in:
Applications:
Suitable for:
Advantages:
Applications:
Benefits:
Used in:
For:
We provide customized industrial finned tube heating solutions with:
✔ High frequency welded steel fin tubes
✔ High heat transfer efficiency
✔ Strong pressure resistance
✔ Customized tube and fin dimensions
✔ Multiple corrosion protection options
✔ Long service life
✔ Suitable for steam, hot water, and thermal oil systems
