|
| الاسم التجاري: | YUHONG |
| رقم الطراز: | لا يوجد |
| الـ MOQ: | 500 كلغ |
| السعر: | To be discussed |
| تفاصيل التعبئة: | حافظة خشبية بإطار حديدي |
| شروط الدفع: | تي / تي، خطاب الاعتماد |
ASTM A269 TP321 High-Frequency Welded Finned Tubes are engineered for waste heat recovery systems requiring excellent high-temperature performance, oxidation resistance, and long-term structural stability. Manufactured by high-frequency resistance welding technology, the fins are firmly welded onto the tube surface, ensuring efficient heat transfer and excellent mechanical strength under demanding operating conditions.
The TP321 stainless steel base tube contains titanium stabilization, providing improved resistance to intergranular corrosion after exposure to high temperatures. Compared with conventional stainless steels such as TP304, TP321 offers enhanced thermal stability and is widely selected for high-temperature heat recovery equipment in chemical, petrochemical, power generation, and industrial furnace applications.
These finned tubes are suitable for environments involving hot exhaust gases, thermal cycling, and continuous operation, making them an ideal heat transfer solution for waste heat boilers and related energy recovery systems.
ASTM A269 TP321 High-Frequency Welded Finned Tubes are commonly used in:
TP321 stainless steel provides excellent resistance to oxidation and thermal fatigue, making it suitable for high-temperature waste gas recovery applications.
High-frequency welding creates a strong metallurgical bond between the fin and tube, improving heat transfer efficiency and preventing fin loosening during thermal expansion and vibration.
The titanium-stabilized structure of TP321 improves resistance to chromium carbide precipitation and intergranular corrosion during prolonged high-temperature service.
The combination of stainless steel construction and welded fin technology provides reliable operation in harsh industrial environments.
The dimensions of ASTM A269 TP321 high-frequency welded finned tubes can be customized according to project requirements. Common manufacturing ranges are listed below:
| Item | Typical Range |
|---|---|
| Base Tube Outside Diameter | 12.7 mm – 219.1 mm |
| Base Tube Wall Thickness | 1.5 mm – 12.7 mm |
| Tube Length | Up to 18,000 mm |
| Fin Height | 6 mm – 30 mm |
| Fin Thickness | 0.8 mm – 3.0 mm |
| Fin Pitch | 2.0 mm – 10 mm |
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 12.0 |
| Titanium (Ti) | 5 × C – 0.70 |
| Iron (Fe) | Balance |
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | ≥ 515 MPa |
| Yield Strength (0.2% Offset) | ≥ 205 MPa |
| Elongation | ≥ 35% |
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