- sales@liampipes.us
- Houston , USA
Home > Super Duplex Steel > Super Duplex Steel Tubing
Liam Pipes and Tubes produces and distributes high-performance Super Duplex Steel Tubing from our Houston facility. Recognized for its high strength, toughness, and resistance to corrosion, Super Duplex steel has the advantages of austenitic and ferritic stainless steels. Our Super Duplex tubing is produced in conformance with ASTM A789/A790 specifications and is suitable for severe use in oil and gas, marine, and chemical applications. With a strong background in manufacturing high-quality seamless and welded tubing, we deliver solutions for stringent pressure and temperature requirements, providing toughness and longevity for industrial purposes.
Super Duplex Steel Tubing has the composition of roughly 50% austenite and 50% ferrite, alloyed with chromium (up to 25%), molybdenum (up to 4%), and nitrogen. Its typical tensile strength is 800–1000 MPa, and yield strength is 550–700 MPa, with elongation of approximately 25%. Its density is approximately 7.8 g/cm³. Super Duplex provides excellent pitting corrosion resistance, crevice corrosion, and stress corrosion cracking in sour environments. It possesses extremely good mechanical properties that render it highly fatigue– and pressure-resistant, ideal for high-stress applications.
Standard ASTM A790 / ASME SA790, ASTM A789 / ASME SA A789
Dimensions ASTM, ASME and API
Seamless Pipes & Tubes Sizes 1 / 2″ NB – 8″ NB
Welded Pipes & Tubes Sizes : 6″ NB – 24″ NB
Outer Diameter 6.0-630mm
Schedule SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
Thickness 0.3mm – 50 mm
Type Seamless / ERW / Welded/ Fabricated
Form Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
Length Single Random, Double Random & Cut Length
End Plain End, Beveled End, Treaded
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S32750 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
| S32760 | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 – 26.00 | 3.00 – 4.00 | 6.00 – 8.00 | 0.20 – 0.30 | 57.61 min |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| S32750 / S32760 | 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000, MPa – 800 | Psi – 80000, MPa – 550 | 15 % |
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 Tubes 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 Super 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 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 Tubes 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 Tubing is commonly applied in offshore oil and gas platforms, subsea equipment, and heat exchangers, where there is a need for both corrosion resistance and high strength. It‘s perfect where there’s chloride stress corrosion and pitting involved, like in marine environments, chemical processing, and desalination plants. It’s applied in petrochemical industries to pressure vessels, reactor systems, and pipelines used in transportation. Super Duplex pipes are also employed in power plants, water treatment plants, and heat exchangers where resistance to corrosion and high-temperature, high-pressure condition and long lifespan is necessary. Its corrosion strength provides toughness in seawater and aggressive chemical environments.
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