ASME Section VIII Certified SA790 S32205 Duplex U-Bend Heat Exchanger Tube Bundle Sulfide Resistance
ASME Section VIII Certified SA790 S32205 Duplex U-Bend Heat Exchanger Tube Bundle Sulfide Resistance
Yuhong Holdings Group Co., Ltd. is a specialized manufacturer of pressure vessels, with an annual production capacity exceeding 6,000 tons. We provide a wide range of high-quality products, including film evaporators, heat exchangers, reaction vessels, towers, storage tanks, and filters.
Advantages of SA790 S32205 Duplex U-Bend Heat Exchanger Tube Bundle
SA790 S32205 is a duplex stainless steel known for its excellent corrosion resistance and high strength, making it ideal for high-temperature and high-pressure environments. Key benefits include:
- Excellent Corrosion Resistance: Suitable for various chemical media.
- High Strength: Provides good load-bearing capacity even at thinner wall thicknesses.
- Good Weldability: Compatible with various welding processes.
SA790 S32205 Duplex U-Bend Heat Exchanger Tube Bundle Pitting Resistance Equivalent
PRE (Pitting Resistance Equivalent) quantifies resistance to localized corrosion in chloride-rich environments. The formula is:
PRE = %Cr + 3.3 × %Mo + 16 × %N
For S32205 duplex steel:
PRE ≥ 22 + 3.3×3 + 16×0.14 = 33.24, with typical values ≥35
- Chromium (Cr): 22.0–23.0% (forms passive oxide layer)
- Molybdenum (Mo): 3.0–3.5% (enhances pitting/crevice corrosion resistance)
- Nitrogen (N): 0.14–0.20% (boosts strength and stabilizes austenite phase)
Heat Exchanger Component List
The SA790 S32205 U-tube is typically used in conjunction with the following components in heat exchangers:
| Component | Description |
|---|---|
| Shell | Main body that houses the tubes |
| Tube Bundle | Collection of tubes facilitating heat exchange |
| End Caps | Close the ends of the heat exchanger |
| Baffles | Direct fluid flow to enhance heat transfer |
U-Tube Specifications
Key parameters for the U-tube include:
| SERIAL | R | STRAIGHT LENGTH | LENGTH | NO. | MASS/UNIT | TOTAL MASS |
|---|---|---|---|---|---|---|
| eg. | 35MM | 6096MM | 12302MM | 24PCS | 11.07 | 265.58 |
Additional Materials
In addition to S32205, we offer various other materials for heat exchangers, including:
| Material | Description |
|---|---|
| S30400 | General-purpose stainless steel |
| S31600 | Enhanced corrosion resistance |
| Carbon Steel | Cost-effective option for certain applications |
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