Home > Duplex Steel > Duplex Steel S31803 Tube Fittings
At Nasir Nickel Alloys in Manama, Bahrain, Duplex Steel S31803 Tube Fittings are engineered to deliver exceptional strength, corrosion resistance, and long-term reliability for demanding industrial applications. Manufactured from high-quality duplex stainless steel, these fittings feature a balanced austenitic-ferritic microstructure, providing superior mechanical properties and excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Each fitting is precision-crafted to ensure secure, leak-proof connections and consistent performance. Designed for chemical, petrochemical, marine, and industrial systems, Duplex Steel S31803 Tube Fittings provide dependable solutions for high-pressure and aggressive environments, ensuring safe and efficient operation in critical applications.
Duplex Steel S31803 Tube Fittings are composed of approximately 22% chromium, 5–6% nickel, 3% molybdenum, and nitrogen, offering outstanding resistance to chloride-induced corrosion, pitting, and stress corrosion cracking. The duplex microstructure provides excellent tensile and yield strength, superior toughness, and fatigue resistance under fluctuating pressures and elevated temperatures. These fittings maintain dimensional stability under thermal cycling and mechanical stress. Their combination of high strength and corrosion resistance makes them ideal for industrial systems that require long-term durability and reliable performance in harsh chemical, marine, and high-pressure environments.
| 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 Nasir Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Duplex Steel S31803Tube Fittings in Manama, Bahrain, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Bahrain, 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 industries that require superior corrosion resistance and mechanical strength. They are ideal for chemical processing units, petrochemical plants, desalination facilities, offshore platforms, and power generation systems. Their resistance to chloride-induced corrosion and stress corrosion cracking makes them suitable for marine and coastal applications. These fittings are also used in high-pressure piping networks, heat exchangers, and process equipment handling aggressive chemicals. By providing secure, leak-proof connections and long-term durability, Duplex Steel S31803 Tube Fittings ensure safe, efficient, and reliable operation across demanding industrial, chemical, and marine applications.
