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

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).

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.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.