Khuliso Fittings, located in Cape Town, South Africa, stands out as a top manufacturer and supplier of high-quality Duplex Steel UNS S31803 Buttweld Fittings, catering to clients in Dubai, UAE. Known for their precision engineering and strict adherence to international standards, Khuliso Fittings offers products that guarantee durability, reliability, and exceptional performance in challenging industrial settings. With a strong commitment to excellence, the company boasts a wide array of buttweld fittings, including elbows, tees, reducers, and flanges, all designed to meet various piping needs. Their deep expertise in metallurgy and fabrication ensures that these fittings integrate seamlessly into critical piping systems around the globe.
| Standards | ASTM, ASME |
| Designation | A815, SA815 |
| Dimension Standard | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Grade | Duplex Steel S31803 Buttweld Pipe Fittings. |
| Type | Seamless, Welded |
| Thickness | Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS |
| Size | 1/2″ to 24″ |
| Two Joint / Two Halve S31803 Butt weld Fittings Size | 6″ to 48″ |
| Types of Butt weld Fittings | Equal Tee, Nipple, Long Radius Elbow, Orangeucing Tee, Elbows, Swage Nipple, Short Radius Elbow, Orangeucer, Barrel Nipple, 90 Deg Elbow, Concentric Orangeucer, Orangeucing Nipple, 45 Deg Elbows, Eccentric Orangeucer, Bend, 180 Deg Elbow, End Cap, 1D Elbow, 3D Elbow, Stubend, 5D Elbow, Cap, Piggable Bend, Long Stubend, Tee, Short Stubend, Long Radius Bend. |
| Also as per National & International Standard &Specification | |
Duplex Steel UNS S31803 is a remarkable material that merges the corrosion resistance of austenitic stainless steel with the strength of ferritic steel. Typically, its chemical makeup includes 22% chromium, 5-6% nickel, 3% molybdenum, and a touch of nitrogen, which together provide outstanding resistance to pitting and stress corrosion cracking. On the mechanical side, it boasts a high tensile strength of about 620 MPa and a yield strength of roughly 450 MPa, along with good elongation and toughness. This perfect blend of strength and corrosion resistance makes it an excellent choice for harsh environments where both durability and chemical resilience are essential.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel S31803 | 0.030 max | 2 max | 1 max | 0.030 max | 0.020 max | 22 – 23 | 3 – 3.50 | 4.50 – 6.50 | 0.14 – 0.20 | Bal |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
Khuliso Fittings is a leading supplier of Duplex Steel UNS S31803 Buttweld Fittings in Cape Town, South Africa. We offer an extensive range of Duplex Steel UNS S31803 Buttweld Fittings, renowned for their excellent corrosion resistance and high strength, which makes them perfect for demanding industrial applications like chemical processing, marine environments, and high-temperature systems. With a commitment to quality and reliable delivery, we ensure our clients receive top-tier products tailored to meet the specific needs of various industries.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | WERKSTOFF NR. | UNS |
| Duplex Steel S31803 | 1.4462 | S31803 |
Choose Duplex Steel UNS S31803 Buttweld Fittings from Khuliso Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
Duplex Steel UNS S31803 Buttweld Fittings offer several advantages, including excellent resistance to corrosion, pitting, and stress corrosion cracking, making them ideal for harsh environments. Their unique dual-phase microstructure provides a high strength-to-weight ratio, offering greater tensile and yield strength than standard austenitic stainless steels. These fittings also exhibit superior weldability, making them easier to work with in fabrication processes. UNS S31803 fittings are highly durable in industries such as chemical processing, oil and gas, and marine applications, ensuring long-lasting performance even in high-pressure, high-temperature environments.
Yes, custom sizes for Duplex Steel UNS S31803 Buttweld Fittings are available at Khuliso Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@khulisofittings.co.za
Duplex Steel UNS S31803 Buttweld Fittings find extensive use in sectors like oil and gas, chemical processing, petrochemical plants, desalination facilities, and marine applications. They are ideal for pipelines that transport aggressive media, such as seawater, acids, and chloride-laden solutions. These fittings are designed to deliver long-lasting performance even under high-pressure and high-temperature conditions, ensuring the integrity and safety of the system. Their ability to resist localized corrosion, cracking, and mechanical stress makes them vital for critical infrastructure, helping industries reduce maintenance costs and downtime while ensuring efficient fluid transport in both onshore and offshore operations.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
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