Welcome to Maduka Metals, your trusted partner in Abuja for premium industrial materials. We take pride in supplying robust Duplex Steel Hollow Bars, engineered to meet the demanding challenges of modern construction and manufacturing. Our commitment is to provide local businesses with high-quality, durable products that ensure longevity and reliability in their projects, supporting the growth and infrastructure development right here in Nigeria.
The composition of Duplex Steel Hollow Bar is a strategic blend of chromium, nickel, and molybdenum, giving it a unique two-phase microstructure. This results in exceptional mechanical properties, including very high strength and excellent toughness. It also offers outstanding resistance to corrosion and stress cracking, making it significantly more resilient than standard stainless steels, which allows for more efficient and lightweight designs.
Standards : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 10 mm To 100 mm Dia in
Length : 100 mm TO 6000 mm Length.
Specifications : ASTM A276, A479 / ASME SA276, SA479
Form : Hollow
Finish : Bright, Polish & Black
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
S32205 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 – 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
| S31803 / S32205 | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
Yes, Duplex Steel Hollow Bars can be recycled after use. Their high metal content makes them suitable for reuse in various industrial processes, promoting sustainability and resource efficiency.
Yes, Duplex Steel Hollow Bars are suitable for cryogenic applications due to their excellent toughness, strength, and resistance to brittle fracture at extremely low temperatures.
Yes, Duplex Steel Hollow Bars can be used for underground applications due to their high corrosion resistance, strength, and durability, even in harsh and moisture-prone environments.
Because of its remarkable strength and corrosion resistance, this hollow bar is ideally suited for challenging environments. You’ll find it in critical applications like offshore oil and gas platforms, chemical processing equipment, and desalination plants. It’s also widely used in architectural structures, bridges, and high-stress mechanical components, where its durability ensures long-term performance and safety, making it a smart choice for projects that demand the very best.
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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