- sales@mariapipes.com
- Kuala lumpur, Malaysia
Home > Super Duplex Steel > Super Duplex Steel Boiler Tubing
Maria Pipes and Tubes, based in Kuala Lumpur, Malaysia, stands out as a top manufacturer and supplier of premium Super Duplex Steel Boiler Tubing. This tubing is crafted for outstanding performance even under high pressure and temperature, utilizing cutting-edge manufacturing techniques to guarantee exceptional durability, corrosion resistance, and precise dimensions. With a commitment to meeting rigorous global standards, Maria Pipes and Tubes has become a reliable partner for industries that operate in tough and demanding conditions.
Super Duplex Steel Boiler Tubing features a well-balanced microstructure of austenite and ferrite, with about 25-28% chromium, 6-8% nickel, 3-5% molybdenum, and nitrogen. This distinctive blend offers remarkable resistance to pitting, crevice corrosion, and stress corrosion cracking, along with impressive tensile strength, toughness, and thermal stability, ensuring dependable performance in boiler systems.
| 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 Maria 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.
Maria Pipes and Tubes, one of the largest suppliers of Super Duplex Steel Boiler Tubing in the Kuala lumpurs, Malaysia. 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 Maria 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@mariapipes.com.
This tubing finds extensive application in power generation, petrochemical, marine, and desalination sectors. It’s particularly suited for high-pressure steam boilers, heat recovery steam generators, and waste heat boilers, where corrosion and scaling resistance are crucial. Its strength and long-lasting nature make it perfect for continuous use in extreme temperatures and corrosive environments, ensuring safety and efficiency in vital industrial applications.
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