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Aisha Nickel Alloys is a trusted manufacturer and supplier of Super Duplex Steel Flanges in Muscat, Oman. We offer high-performance flanges designed for applications that demand superior corrosion resistance, strength, and durability. Our Super Duplex Steel flanges are manufactured to international standards and undergo strict quality inspections to ensure dimensional accuracy, mechanical integrity, and long service life. Serving industries such as oil & gas, chemical processing, petrochemical, desalination, and marine, we focus on delivering flange solutions that engineers can rely on, backed by technical expertise and responsive customer service.
Super Duplex Steel flanges are made from a high-alloyed duplex stainless steel containing chromium, nickel, molybdenum, and nitrogen. This composition provides excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. The alloy offers high tensile and yield strength, good toughness, and superior ductility. Super Duplex Steel flanges maintain mechanical stability across a wide temperature range and perform reliably in harsh chemical and marine environments, combining the corrosion resistance of stainless steel with the strength of carbon steel.
| 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 Aisha Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Super Duplex Steel Flanges 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.
Contact us to get a quick quote for your requirement.
Super Duplex Steel flanges are widely used in applications where high strength and corrosion resistance are critical. Common uses include oil & gas pipelines, chemical processing plants, desalination units, petrochemical industries, and marine installations. They are also used in seawater handling systems, heat exchangers, and pressure vessels. Super Duplex Steel flanges provide secure, leak-free connections in critical piping systems and withstand harsh chemical, high-pressure, and high-temperature environments. These flanges are valued for their durability, long-term performance, and ability to resist aggressive corrosion in demanding industrial applications.
