Mourad Metals is a reliable manufacturer and supplier of Super Duplex Steel Hollow Bars, proudly based in Tunis, Tunisia. They specialize in delivering high-performance solutions tailored for demanding industrial applications. Renowned for their precision manufacturing and unwavering commitment to quality, Mourad Metals adheres strictly to international standards. Their hollow bars boast impressive strength, corrosion resistance, and precise dimensions, making them ideal for challenging environments that involve high pressure, temperature, and exposure to chlorides. With a strong emphasis on meeting customer needs, ensuring timely deliveries, and providing technical support, Mourad Metals caters to global industries such as oil and gas, petrochemicals, marine, and heavy engineering with their dependable Super Duplex Steel Hollow Bar solutions.
These hollow bars are crafted from alloys that typically contain around 22–26% chromium, 5–8% nickel, 3–5% molybdenum, along with controlled nitrogen additions. This well-balanced duplex microstructure delivers outstanding mechanical strength, featuring high yield and tensile values, as well as excellent toughness. The material is known for its superior resistance to pitting, crevice corrosion, and stress corrosion cracking. Its low carbon content enhances weldability, while the carefully optimized alloy composition ensures stability and long-lasting performance in highly corrosive and high-load 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.
Super Duplex Steel Hollow Bars find extensive use in industries where strength, corrosion resistance, and weight optimization are essential. They are commonly used in oil and gas components like pressure vessels, valve bodies, and flowlines, as well as in offshore platforms and subsea equipment. Additionally, they play a vital role in chemical processing plants, desalination units, heat exchangers, and marine engineering. The design of hollow bars helps reduce machining time and material waste, making them perfect for precision parts in heavy engineering, power generation, and structural applications that are exposed to harsh environments.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Mourad Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Tunis, Tunisia
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