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Okoye Nickel Alloys stands as a key contributor to Kinshasa’s industrial landscape, specializing in the supply of high-performance Duplex Steel Pipes 2205. We understand that the demanding projects across Congo require materials that offer exceptional resilience. That’s why our focus is on providing reliable, durable piping solutions that stand up to harsh environments, ensuring your operations benefit from both superior strength and cost-effective longevity, supported by our local expertise and commitment to quality.
Duplex Steel 2205 earns its reputation from a balanced composition of chromium, nickel, molybdenum, and nitrogen. This blend creates a microstructure that delivers the best of both worlds: the impressive strength of ferritic steels and the excellent corrosion resistance of austenitic grades. The result is a material with remarkable toughness and a strong resistance to stress corrosion cracking, making it significantly more robust than standard stainless steels for a wide array of challenging applications.
| Specifications | Cr | Ni | Mo | N | Mn | W | Cu |
| 2101 LDX | 21.5 | 1.5 | 0.3 | 0.22 | 5 | – | – |
| DX2202 | 23 | 2.5 | 0.3 | 0.2 | 1.5 | – | – |
| RDN 903 | 20 | 1.8 | 0.2 | 0.11 | 4.2 | – | – |
| 2304 | 23 | 4.8 | 0.3 | 0.10 | – | – | – |
| 2205 | 22 | 5.7 | 3.1 | 0.17 | – | – | – |
| Grade | C≤ | Mn≤ | P≤ | S≤ | Si≤ | Ni | Cr | Mo | N | Cu |
| S31803 | 0.03 | 2.00 | 0.03 | 0.02 | 1.00 | 4.5–6.5 | 21.0–23.0 | 2.5–3.5 | 0.08–0.20 | – |
| 2205 | 0.03 | 2.00 | 0.03 | 0.02 | 1.00 | 4.5–6.5 | 22.0–23.0 | 3.0–3.5 | 0.14–0.20 | – |
| S32750 | 0.03 | 1.20 | 0.035 | 0.02 | 0.80 | 6.0-8.0 | 24.0-26.0 | 3.0-5.0 | 0.24-0.32 | 0.5 |
| Mechanical properties | Tensile,min,ksi[MPa] | Yield,min,ksi[MPa] | Elongation,%(min) | Hardness,HB(max) |
| S31803 | 90 [620] | 65 [450] | 25 | 290 |
| 2205 | 95 [655] | 65 [450] | 25 | 290 |
| S32750 | 116 [800] | 80 [550] | 15 | 300 |
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel 2205 Pipe in Kinshasa, Congo, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Congo, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
The robust nature of Duplex Steel Pipes 2205 makes them ideal for demanding roles, particularly in the oil and gas sector for processing corrosive fluids and in offshore environments. They are also extensively used in chemical and petrochemical plants, power generation, and for handling aggressive fluids in desalination and water treatment facilities. Essentially, these pipes are the go-to choice wherever there’s a need to reliably contain corrosive substances under high pressure, ensuring system integrity and safety over the long term.
