ASTM A790 S32750 Super Duplex Seamless Boiler Tube – High Corrosion & Pressure Resistance

​​1. Product Overview​​

​​ASTM A790 S32750 Super Duplex Seamless Boiler Tubes​​ are engineered for extreme environments in boilers, heat exchangers, and offshore platforms. Manufactured under ASTM A790/ASME SA790 standards, these tubes combine exceptional corrosion resistance with high mechanical strength, ideal for chloride-rich and high-pressure applications.

​​2. Material & Chemical Composition​​

• ​​Material​​: Super Duplex Stainless Steel (UNS S32750, equivalent to ​​2507​​).
• ​​Key Chemical Properties​​:

​​3. Mechanical Properties​​

​​4. Key Features & Advantages​​

• ​​Superior Corrosion Resistance​​: Resists pitting, crevice, and stress corrosion cracking (PREN >40).
• ​​High-Temperature Performance​​: Suitable for ​​-50°C to 300°C​​ environments.
• ​​Seamless Design​​: No welds, ensuring leak-proof performance under high pressure.
• ​​Certified Quality​​: Complies with ​​ASTM A790, ASME SA790, and EN 10216-5​​.

​​5. Applications​​

• ​​Oil & Gas​​: Subsea pipelines, FPSO systems.
• ​​Chemical Processing​​: Acid transport, flue gas desulfurization (FGD).
• ​​Power Plants​​: High-pressure steam boilers.

​​6. FAQ​​

​​Q: How does S32750 compare to standard duplex grades like 2205?​​
A: S32750 has higher Cr, Mo, and N content, offering ​​50% greater strength​​ and ​​better chloride resistance​​.

​​Q: Can you supply custom sizes?​​
A: Yes! We support OD: ​​10–1200mm​​, thickness: ​​1–50mm​​, and lengths up to ​​18m​​.

​​About Yuhong Holding Group Co., Ltd​​

With ​​20+ years of export experience​​, Yuhong Group is a top-5 Chinese manufacturer of finned tubes and seamless pipes. Our ​​55 production lines​​ and ​​20,000㎡ facility​​ ensure high-capacity output, while advanced technology guarantees precision.

• ​​Website​​: www.steelfintube.com
• ​​Contact​​: Jimmy (Email: jimmy@steelseamlesspipe.com, WhatsApp: +86 18892647377).