Home > Duplex Steel > Duplex Steel S31803 Tube Fittings
Santner Nickel Alloys, based in Hamilton, New Zealand, is a trusted manufacturer and supplier of Duplex Steel S31803 tube fittings. These high-quality fittings are engineered for exceptional strength, corrosion resistance, and durability, making them ideal for demanding industrial applications. Featuring a dual-phase austenitic-ferritic microstructure, S31803 tube fittings provide superior performance under high pressure, thermal cycling, and aggressive chemical environments. Santner Nickel Alloys ensures precise manufacturing and adherence to international standards, delivering fittings that maintain structural integrity in chemical processing, petrochemical, offshore, and marine industries. These fittings are widely used where reliable, long-lasting, and safe tube connections are required.
Duplex Steel S31803 tube fittings are composed of iron, chromium, nickel, and molybdenum, with small additions of nitrogen and manganese for enhanced strength and corrosion resistance. The dual-phase microstructure provides high tensile and yield strength, excellent toughness, and superior fatigue resistance. S31803 fittings exhibit outstanding resistance to pitting, crevice corrosion, and stress-corrosion cracking, particularly in chloride-rich and acidic environments. These fittings maintain dimensional stability under high pressure and thermal fluctuations. With excellent ductility, weldability, and mechanical performance, S31803 tube fittings are ideal for critical applications in harsh industrial and offshore conditions.
| ASTM A815 WPS S31803 Pipe Fittings Standard Dimensions | ASME/ ANSI B16.9, ASME B16.28, MSS-SP-43, BS1560, BS4504, BS10 ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799 |
|---|---|
| Specifications | ASTM A815 / ASME SA815 |
| Duplex Steel S31803 Elbow | Angle : 22.5 deg, 30deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D. Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO |
| A815 WPS S31803 Pipe Fittings Thickness | SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75 |
| ASTM A815 WPS 31803 Pipe fittings Thread | NPT, BSPT, BSPP |
| Duplex Steel S31803 Forged Fittings Types | Seamless / Welded / ERW / Fabricated UNS S31803 DSS Pipe Fittings |
| C | N | P | Si | Mn | Mo | Fe | Cr | S | Ni |
|---|---|---|---|---|---|---|---|---|---|
| 1.0 | 0.03 | 0.02 | 2.0 | 3.0 – 3.5 | 22.0 – 23.0 | 0.03 | 4.5 – 6.5 | 0.14 – 0.2 | Bal |
| Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
|---|---|---|---|---|
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
At Olwan Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803Tube Fittings in Amman, Jordan, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Jordan, 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.
Duplex Steel S31803 tube fittings are widely used in chemical processing, petrochemical plants, offshore oil and gas, marine industries, and water treatment facilities due to their high strength and corrosion resistance. They are ideal for connecting pipelines, valves, pumps, heat exchangers, and pressure vessels exposed to chlorides, acids, and extreme conditions. These fittings are also used in desalination plants and industrial systems requiring durable, maintenance-free connections. Engineers and fabricators rely on S31803 tube fittings for safe, reliable, and long-lasting tube assemblies, ensuring operational efficiency, structural integrity, and reduced maintenance costs in critical piping and industrial applications.