- sales@davidpipes.com
- Canberra, Australia
Home > Super Duplex Steel > Super Duplex Steel Boiler Tubing
David Pipes and Tubes, located in Canberra, Australia, stands out as a top-notch manufacturer and supplier of **Super Duplex Steel Boiler Tubing**. This tubing is celebrated for its remarkable strength, resistance to corrosion, and durability, especially in high-temperature and high-pressure settings. Crafted with meticulous attention to detail and rigorous quality control, it adheres to international standards, ensuring dependable performance even in the toughest industrial conditions. Super Duplex Steel Boiler Tubing from David Pipes and Tubes is perfect for sectors like chemical processing, power generation, oil and gas, and marine applications, where the ability to withstand corrosion, scaling, and thermal stress is vital for safe and efficient boiler operation.
This tubing is made up of about 25% chromium, nickel, molybdenum, and nitrogen, which together create a well-balanced austenitic-ferritic microstructure. This unique composition provides impressive mechanical properties, boasting tensile strength of up to 800 MPa and yield strength around 550 MPa. It also shows excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, particularly in high-temperature environments rich in chlorides. Additionally, the tubing is known for its superior weldability, toughness, and thermal stability, making it an ideal choice for boiler and heat exchanger applications under aggressive and high-pressure conditions.
| 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 David 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.
David Pipes and Tubes, one of the largest suppliers of Super Duplex Steel Boiler Tubing in the Canberras, Australia. 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 David 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@davidpipes.com.
Super Duplex Steel Boiler Tubing is extensively utilized in industries that demand high-strength, corrosion-resistant, and reliable heat transfer solutions. In the power generation sector, it finds its place in boilers, heat exchangers, and condensers to facilitate efficient energy transfer. The chemical and petrochemical industries rely on it for handling high-temperature and corrosive process streams. Meanwhile, marine and offshore industries benefit from its ability to resist seawater corrosion and scaling. Its durability and corrosion resistance also make it a great fit for desalination plants, as well as pharmaceutical and food processing applications, ensuring long-lasting, safe, and efficient operation even in extreme conditions.
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