YUHONG HOLDING GROUP CO., LTD
| Payment Terms | T/T,L/C |
| Delivery Time | 7days |
| Packaging Details | ply-wooden case |
| Material | Super Duplex Stainless Steel |
| Surface Treatment | Pickling, Polishing, Bright Annealing |
| Size | Customized |
| Corrosion Resistance | Excellent |
| High Temperature Resistance | Yes |
| Application | Heat Exchanger |
| Wall Thickness | Customized |
| NDT | HT, ECT |
| Brand Name | Yuhong |
| Model Number | ASTM A789 S32750 |
| Certification | ABS, BV, CCS, DNV, LR |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T,L/C | Delivery Time | 7days |
| Packaging Details | ply-wooden case | Material | Super Duplex Stainless Steel |
| Surface Treatment | Pickling, Polishing, Bright Annealing | Size | Customized |
| Corrosion Resistance | Excellent | High Temperature Resistance | Yes |
| Application | Heat Exchanger | Wall Thickness | Customized |
| NDT | HT, ECT | Brand Name | Yuhong |
| Model Number | ASTM A789 S32750 | Certification | ABS, BV, CCS, DNV, LR |
| Place of Origin | China |
ASTM A789 S32750 Super Duplex Stainless Steel Seamless Tube For Heat Exchanger
This seamless tube is made from ASTM A789 S32750 Super Duplex Stainless Steel, designed for high-strength, corrosion-resistant heat exchanger applications. It combines the properties of austenitic and ferritic stainless steels, offering excellent resistance to chloride stress corrosion cracking, pitting, and crevice corrosion, especially in marine and chemical process environments.
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 6.0 – 8.0 |
| Molybdenum (Mo) | 3.0 – 5.0 |
| Nitrogen (N) | 0.24 – 0.32 |
| Manganese (Mn) | ≤ 1.2 |
| Carbon (C) | ≤ 0.030 |
| Silicon (Si) | ≤ 0.80 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.020 |
| Iron (Fe) | Balance |
| Property | Typical Value |
|---|---|
| Tensile Strength | ≥ 795 MPa |
| Yield Strength (0.2%) | ≥ 550 MPa |
| Elongation | ≥ 15% |
| Hardness (HRB) | ≤ 100 |
Superior Corrosion Resistance: Excellent in brine, seawater, and aggressive chemical media.
High Strength: Double the yield strength of austenitic stainless steels (e.g., 316L).
Stress Corrosion Resistance: Especially effective against chloride-induced cracking.
Long Service Life: Ideal for harsh and corrosive operating environments.
Low Thermal Expansion: Reduces stress during temperature fluctuations in heat exchangers.
Heat Exchangers in:
Desalination plants
Offshore oil & gas platforms
Marine cooling systems
Chemical and petrochemical processing
Condenser and evaporator tubes
Seawater systems in refineries and power stations
High-pressure and high-temperature environment
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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