- sales@bereketpipes.com
- Addis Ababa, Ethiopia
Home > Super Duplex Steel > Super Duplex Steel Boiler Tubing
Bereket Pipes is a trusted manufacturer and supplier of super duplex steel boiler tubing for industrial customers in Addis Ababa, Ethiopia, and the Middle East region. With expertise in high-performance alloys, the company provides tubing solutions for severe pressure, temperature, and corrosion environments. Their boiler tubes made from super duplex steel are manufactured according to international standards and are suitable for use in power plants, refineries, and chemical processing industries. Using state-of-the-art technology, quality checks, and customer satisfaction as its beacon, Bereket Pipes provides dependable, long-lasting tubing solutions that fulfill the intricate requirements of high-efficiency boiler and heat recovery systems.
Super duplex steel boiler tubes are generally produced from grades such as UNS S32750 and S32760, with a two-phase microstructure balance of austenite and ferrite. The alloy has high chromium (24–26%), molybdenum (3–5%), and nickel (6–8%) content, which gives it outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Mechanically, it has very high tensile and yield strength, excellent fatigue life, and good weldability. The tubing has structural integrity at high temperatures and pressures and is well suited for harsh boiler applications where regular stainless steels will corrode or fail under thermal stress.
| Specifications | ASTM A789 ASME SA789 |
| Dimensions | ASTM, ASME and API |
| Tube Size | 1/2″NB TO 12 “NB IN |
| Specialized in | Large Diameter Size |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80 |
| Type | Fire Boiler Tubing/ Hot Rolled Boiler Tube/ Heat Expansion Boiler Tube/ IBR Seamless Boiler Tubes |
| Material | Super Duplex Steel |
|---|---|
| Carbon (C) Max. | 0.030 |
| Manganese (Mn) Max. | 1.20 |
| Phosphorous (P) Max. | 0.035 |
| Sulphur (S) Max. | 0.020 |
| Silicon (Si) Max. | 0.80 |
| Chromium (Cr) | 24.0–26.0 |
| Nickel (Ni) | 6.0–8.0 |
| Molybdenum (Mo) | 3.0–5.0 |
| Nitrogen (N) | 0.24–0.32 |
| Iron (Fe) | Bal. |
| Copper (Cu) | 0.50 |
| Other Elements | — |
| Tensile Strength | Yield Strength | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | UNS Designation | Spec. | psi | MPa | ksi | psi | MPa | ksi | Elongation in 2 in. (min.) % | Grain Size Req. | Max. Hardness | Modulus of Elasticity (x106psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Conductivity (BTU-in/ ft2-h-°F) |
| Super Duplex | – | A789, A790 | 100,000 | 690 | 100 | 70,000 | 485 | 70 | 20 | — | 30.5 Rc | — | — | — |
| Super Duplex | – | A789, A790 | 116,000 | 800 | 116 | 80,000 | 550 | 80 | 15 | — | 32 Rc | 27.5 | 7.2 | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Super Duplex Steel Boiler Tubing from Bereket Pipes and Tubes ensures superior quality and durability, offering outstanding corrosion resistance and high strength. Our dedication to delivering exceptional service and reliable products guarantees customer satisfaction across a wide range of industrial applications. With our expertise in Duplex steel solutions, you can trust us to provide a top-tier, customized piping solution that meets your specific requirements.
Bereket Pipes and Tubes, one of the largest suppliers of Super Duplex Steel Boiler Tubing in the Addis Ababas, Ethiopia. Offers a wide range of high-quality pipes and tubes designed for various industrial applications. Their extensive inventory and dedication to exceptional service make them a trusted choice for Super Duplex steel products in the region, delivering reliable solutions to meet diverse project requirements.
Yes, we provide custom sizes for Super Duplex Steel Boiler Tubing to meet your specific requirements. At Bereket Pipes and Tubes, our team is dedicated to delivering tailored solutions for all your piping and tubing needs. For more information, please contact us at sales@bereketpipes.com.
Super duplex steel boiler tubes find extensive application in high-temperature and high-pressure applications where corrosion resistance and high strength are a must. In power generation plants, it finds application in boilers, superheaters, and heat recovery steam generators that operate in hostile feedwater and exhaust gases. In petrochemical and offshore sectors, it is used in heat exchangers and pressure vessels that work under extreme chemical and marine conditions. It is also applied in waste-to-energy plants, desalination, and industrial steam systems. The long service life of the material, low maintenance requirements, and superior mechanical properties render it suitable for critical boiler and thermal transfer applications.
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