Maduka Metals, located in Abuja, Nigeria, stands out as a top manufacturer and supplier of high-quality **Super Duplex Steel Hollow Bars**. These bars are celebrated for their remarkable strength and resistance to corrosion. With a strong focus on precision engineering and outstanding performance, Maduka Metals delivers hollow bars that adhere to international standards, making them perfect for challenging industrial settings. Our products are made using cutting-edge manufacturing techniques, ensuring they are reliable, durable, and efficient for critical applications in sectors like oil and gas, marine, petrochemical, and construction. This commitment has established us as a trusted name in the steel industry, not just in Nigeria, but beyond.
Super Duplex Steel Hollow Bars are crafted from a blend of chromium (around 25%), nickel (approximately 7%), molybdenum (about 4%), and nitrogen, all of which boost their strength and corrosion resistance. These bars feature a unique microstructure that combines austenite and ferrite, resulting in high tensile and yield strength, excellent impact toughness, and outstanding resistance to pitting and crevice corrosion. Their impressive mechanical properties make them perfect for high-pressure and corrosive environments, ensuring they perform reliably and maintain structural integrity even in extreme conditions.
Specifications : ASTM A276, ASME SA276
Standard : ASTM, ASME
Size : 6 mm to 120 mm.
Length : 1 to 6 Meters, Custom Cut Lengths
Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
| Material | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Super Duplex Steel | 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 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
Yes, Super Duplex Steel Hollow Bars can withstand high temperatures due to their excellent strength and corrosion resistance. They are suitable for applications in environments up to around 300°C (572°F), depending on the specific alloy.
Super Duplex Steel Hollow Bars and Rods are manufactured through hot or cold working processes, including extrusion and forging, followed by heat treatment, cold drawing, and precision machining for enhanced strength and corrosion resistance.
Super Duplex Steel Hollow Bars have excellent natural corrosion resistance due to their high chromium and molybdenum content, making additional protective coatings generally unnecessary. However, in highly aggressive environments, coatings may offer extra protection.
These Super Duplex Steel Hollow Bars find extensive use in industries that require exceptional mechanical strength and corrosion resistance. They’re commonly found in offshore oil and gas platforms, heat exchangers, desalination plants, and marine engineering, thanks to their ability to withstand seawater corrosion. In the chemical and petrochemical sectors, they are essential for process equipment, pressure vessels, and piping systems. Moreover, these hollow bars are also utilized in structural applications, power generation, and the paper and pulp industries, where durability, reliability, and resistance to harsh conditions are paramount.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Maduka Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Abuja, Nigeria
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