- sales@bosegapipes.co.za
- Cape Town, South Africa
Home > Super Duplex Steel > Super Duplex Steel Tubing
Bosega Pipes and Tubes is a reputable manufacturer and supplier located in Cape Town, South Africa, specializing in top-notch Super Duplex Steel Tubing. Known for providing high-performance piping solutions, Bosega caters to a wide range of industries with products that are celebrated for their durability, corrosion resistance, and strength. With a strong focus on quality and customer satisfaction, Bosega Pipes and Tubes delivers customized Super Duplex Steel Tubing that adheres to both international and local industry standards. Thanks to their advanced manufacturing techniques and strict quality control measures, they have become a go-to partner for critical applications in tough and demanding environments.
Super Duplex Steel Tubes are composed of approximately 25% chromium, 3-4% molybdenum, and 6-8% nickel, providing excellent corrosion resistance and mechanical strength. Mechanical properties include high tensile strength (~800 MPa), yield strength (~550 MPa), and good elongation (25%), making them suitable for high-stress environments. These tubes exhibit outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Advantages include lightweight design, enhanced durability, and reduced maintenance requirements, making them ideal for applications in oil and gas, chemical processing, and marine industries, where reliability and performance are critical.
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.
Super Duplex Steel Tubing is mainly made up of about 25% chromium, 7% nickel, 4% molybdenum, along with trace amounts of nitrogen and manganese, resulting in a well-balanced austenitic-ferritic microstructure. This dual-phase design offers remarkable strength and outstanding resistance to stress corrosion cracking, pitting, and crevice corrosion. Its mechanical properties boast a high tensile strength of around 750 MPa and a yield strength of about 550 MPa, with elongation values typically exceeding 25%. The tubing also shows good weldability and toughness, even in sub-zero temperatures, making it perfect for challenging operational settings.
Bosega Pipes and Tubes, one of the largest suppliers of Super Duplex Steel Tubing in the Cape Towns, South Africa, 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 Bosega 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@bosegapipes.co.za.
Bosega Pipes and Tubes’ Super Duplex Steel Tubing is widely utilized across various high-demand sectors due to its remarkable corrosion resistance and mechanical strength. It’s commonly found in offshore oil and gas platforms, desalination plants, chemical processing industries, and marine environments where resistance to chloride-induced corrosion is essential. Power generation plants, structural applications, heat exchangers, and pressure vessels also reap the benefits of its durability and performance under extreme conditions. The tubing’s versatility, long service life, and low maintenance needs make it a smart, cost-effective choice for modern infrastructure and critical engineering systems.
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