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In the heart of Kinshasa, Okoye Nickel Alloys stands as a key source for industrial strength, specializing in the supply and manufacture of Duplex Steel S31803 fasteners. We recognize that the integrity of any major project often hinges on the smallest components, which is why we focus on providing these high-performance bolts, nuts, and studs. Our commitment is to deliver not just a product, but a foundation of reliability for the demanding environments that define modern industry in the Congo and beyond, ensuring your structures are built with unshakable confidence.
The strength of S31803 fasteners comes from a carefully balanced composition, primarily chromium, nickel, and molybdenum, with a controlled nitrogen content. This mixture gives them a unique dual-phase microstructure that combines the best qualities of different steel families. The result is a fastener with exceptional yield strength and toughness, offering far greater resistance to stress corrosion cracking than common alternatives. They are built to withstand significant pressure and impact, making them a robust choice where failure is not an option, all while maintaining good ductility.
| Specifications | : | ASTM A182 / ASME SA182 |
| Size | : | 1/8″ NB TO 24″ 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 / F6 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel S31803 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803 Fasteners 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.
These exceptional fasteners find their purpose in situations where ordinary steel would quickly succumb. They are indispensable in the construction of chemical processing plants and offshore oil and gas platforms, where they brave corrosive seawater and harsh chemicals. You’ll also find them securing components in pollution control equipment, within desalination units transforming seawater, and in critical areas of pulp and paper production. Essentially, wherever there is a combination of high strength demands and a corrosive environment, S31803 fasteners from Okoye provide the essential, durable link that holds everything together securely.
