Mourad Metals, located in Tunis, Tunisia, stands out as a top manufacturer and supplier of high-quality Duplex Steel Hollow Bars. The company is dedicated to crafting precision-engineered hollow bars that adhere to international standards, catering to a wide range of industrial needs. By employing cutting-edge manufacturing techniques and maintaining rigorous quality control, Mourad Metals guarantees that each hollow bar boasts consistent strength, durability, and impressive corrosion resistance. With a commitment to timely deliveries, technical support, and customer satisfaction, the company has built a solid reputation as a trusted partner for engineers, fabricators, and industrial clients in search of exceptional Duplex Steel Hollow Bars for applications in chemical, petrochemical, marine, and offshore sectors.
Duplex Steel Hollow Bars are made up of approximately 22% chromium, 5–6% nickel, and 3% molybdenum, along with trace amounts of nitrogen and other alloying elements. This unique blend results in remarkable mechanical properties, such as high tensile and yield strength, toughness, and ductility. Duplex steel is particularly known for its outstanding resistance to pitting, stress corrosion cracking, and general corrosion, especially in environments rich in chlorides and aggressive chemicals. By merging the advantages of austenitic and ferritic stainless steels, these hollow bars maintain their structural integrity and reliable performance even under high stress, temperature fluctuations, and harsh chemical conditions.
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.
Thanks to their exceptional strength and corrosion resistance, Duplex Steel Hollow Bars find extensive use in the chemical, petrochemical, marine, oil and gas, and desalination industries. They are frequently utilized in the construction of piping systems, valves, pumps, heat exchangers, and pressure vessels that are exposed to harsh chemicals or high-pressure situations. Moreover, these hollow bars are ideal for offshore platforms, chemical reactors, and seawater systems, where both durability and long-lasting service are essential.
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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