- sales@liampipes.us
- Houston , USA
Home > Super Duplex Steel > Super Duplex Steel Boiler Tubing
Liam Pipes and Tubes, Houston, USA, is a respected producer and supplier of Super Duplex Steel Boiler Tubing, known for its superior performance, corrosion resistance, and durability in harsh environments. Our boiler tubing is designed to work under high pressure and temperatures, suitably appropriate for rugged applications in power generation, chemical processing, and marine fields. Utilizing state-of-the-art technology and adherence to quality, we provide tubing that maximizes thermal efficiency, mechanical strength, and durability over time. Liam Pipes and Tubes is the first choice for customers with demanding requirements for strong solutions for critical boiler and heat exchanger systems.
Super Duplex Steel Boiler Tubing contains 25–30% chromium, 6–8% nickel, and 3–4% molybdenum, providing better corrosion resistance and outstanding strength. Its two-phase microstructure (austenite-ferrite) improves mechanical performance and stress corrosion cracking resistance. The tubing has 800–1000 MPa tensile strength, 550–750 MPa yield strength, and 25–30% elongation, making it adaptable to high-pressure, high-temperature conditions. It also possesses good thermal conductivity, low thermal expansion, and good chemical resistance, which are critical for effective operation in power plants, chemical plants, and marine 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 Liam 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.
Liam Pipes and Tubes, one of the largest suppliers of Super Duplex Steel Boiler Tubing in the Houston s, USA. 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 Liam 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@liampipes.us.
Super Duplex Steel Boiler Tubing is widely applied in power generation plants, withstanding severe pressures and temperatures inside boiler systems. Due to its high corrosion resistance, it finds special application in chemical and petrochemical industries, especially in the handling of aggressive fluids and gases. For applications in marine environments, the tubing is used in heat exchangers, steam condensers, and pressure vessels because of its excellent resistance to stress corrosion cracking and seawater exposure. Moreover, it facilitates secure and effective refinery, desalination plant, and high-efficiency boiler operation, providing a secure and durable option for severe industrial environments.
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