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Aisha Nickel Alloys stands out as a reliable manufacturer and supplier of top-notch Duplex Steel Pipes, proudly based in Muscat, Oman. They provide a wide array of duplex steel piping solutions tailored to meet the rigorous demands of today’s industries. Renowned for their exceptional corrosion resistance, impressive strength, and longevity, Aisha Nickel Alloys’ Duplex Steel Pipes are crafted in line with international standards. With state-of-the-art manufacturing facilities, rigorous quality control, and a commitment to customer satisfaction, the company caters to sectors like oil and gas, petrochemicals, marine, desalination, and power generation both in Oman and around the globe.
Duplex Steel Pipes feature a well-balanced microstructure, consisting of roughly equal parts austenite and ferrite. Key alloying elements include chromium (21–26%), nickel (4–7%), molybdenum (up to 4%), and nitrogen, all of which boost corrosion resistance and strength. This unique composition results in outstanding mechanical properties, such as high tensile strength, excellent yield strength, and commendable toughness. Additionally, duplex steels provide enhanced resistance to stress corrosion cracking, pitting, and crevice corrosion, ensuring the pipes remain dependable even under high pressure and temperature conditions.
| 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 | – |
| S32205 | 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 |
| S32205 | 95 [655] | 65 [450] | 25 | 290 |
| S32750 | 116 [800] | 80 [550] | 15 | 300 |
At Aisha Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel Pipe in Muscat, OMAN, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the OMAN, 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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Duplex Steel Pipes find extensive use in industries where both strength and corrosion resistance are paramount. They are commonly utilized in oil and gas exploration, offshore platforms, and petrochemical processing for managing aggressive fluids. In desalination plants and water treatment facilities, these pipes offer durability in chloride-rich environments. The marine, shipbuilding, and heat exchanger sectors also benefit from their resistance to seawater corrosion. Furthermore, Duplex Steel Pipes are employed in chemical processing, pulp and paper production, and power generation industries, providing long-term reliability and performance.