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Nestled in the industrial heart of Kinshasa, Okoye Nickel Alloys stands as a trusted partner for industries requiring uncompromising strength and reliability. We specialize in the manufacturing and supply of high-performance Duplex Steel Flanges, engineered to meet the rigorous demands of both local and international projects. Our commitment goes beyond mere supply; we provide robust solutions built on a foundation of technical expertise and a deep understanding of the challenging environments our clients operate within, ensuring seamless connections and long-term integrity for critical piping systems.
The exceptional quality of our Duplex Steel Flanges stems from their unique composition, which carefully balances chromium, nickel, molybdenum, and nitrogen. This specific blend gives the material a two-phase microstructure that combines the best attributes of austenitic and ferritic steels. The result is a product boasting outstanding mechanical properties, including remarkably high tensile and yield strength, excellent resistance to stress corrosion cracking, and superior toughness, even in sub-zero temperatures. This makes them far more robust than conventional stainless steel options.
| Specifications | ASTM A182 / ASME SA182 |
| Size | 1/8″ NB TO 48″ NB |
| Standards | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Grades | S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61 |
| Grade | Duplex Steel Flanges |
|---|---|
| C | 0.030 max |
| Mn | 2.00 max |
| Si | 1.00 max |
| P | 0.030 max |
| S | 0.020 max |
| Cr | 22.0 – 23.0 |
| Mo | 3.0 – 3.5 |
| Ni | 4.50 – 6.50 |
| N | 0.14 – 0.20 |
| Fe | 63.72 min |
| Duplex Steel | Flanges |
|---|---|
| Density (g/cm 3) | 7.805 |
| Density (lb/in 3) | 0.285 |
| Melting Point (°C) | 1420 – 1465 |
| Melting Point (°F) | 2588 – 2669 |
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Flanges 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.
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These superior properties make Duplex Steel Flanges indispensable across a wide spectrum of demanding applications. You will find them playing a critical role in offshore oil and gas platforms, where they resist corrosive seawater, and in chemical processing plants handling aggressive acids. They are equally vital in desalination facilities that turn seawater into freshwater, in demanding pulp and paper production, and in pollution control systems. Essentially, wherever conditions call for a flange that can withstand high pressure, corrosive chemicals, and extreme temperatures, our Duplex Steel products deliver unwavering performance and safety.
