Devang Fittings, located in Kolkata, India, has built a solid reputation as a manufacturer and supplier of Super Duplex Steel Forged Fittings. They specialize in high-performance solutions designed to withstand the toughest industrial conditions. These fittings are celebrated for their remarkable strength, resistance to corrosion, and long-lasting durability, making them perfect for challenging environments like offshore oil rigs, desalination plants, and chemical processing facilities. Crafted with advanced forging techniques and rigorous quality checks, Devang Fittings offers a wide array of elbows, tees, unions, and couplings that meet international standards. Their Super Duplex products guarantee longevity, reliability, and cost-effectiveness for high-pressure and corrosive applications.
| Standards | ASTM A182 / ASME SA182 |
| Specifications | ASME B16.11, MSS SP-79, 83, 95, 97, BS 3799 |
| Size Range | NPS 1/8″- 4″ (DN 6~100) |
| Rating Pressure | Threaded End – 2000/3000/6000 LBS. Socket weld End – 3000/6000/9000 LBS. |
| Type | Socket Weld, Screwed, BSP Threaded & NPT Threaded |
Super Duplex Steel Forged Fittings generally consist of 24–26% chromium, 6–8% nickel, 3–5% molybdenum, along with nitrogen and a balanced amount of iron. This unique dual-phase microstructure, which includes both austenite and ferrite, provides outstanding corrosion resistance, particularly against chloride-induced stress corrosion cracking and pitting. These fittings boast a tensile strength of 750–850 MPa, a yield strength of around 550 MPa, and an elongation of 25–30%, with hardness levels between 250–290 HB. These impressive mechanical properties make them ideal for high-stress, corrosive, and temperature-variable environments, ensuring they remain durable and reliable even in harsh conditions.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| S32205 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 – 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 / S32205 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
Devang Fittings is a leading supplier of Duplex Steel Forged Fittings in Kolkata, India. We offer an extensive range of Duplex Steel Forged 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.
Choose Duplex Steel Forged Fittings from Devang Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
Super Duplex Steel Forged Fittings find extensive use in industries that demand exceptional mechanical strength and corrosion resistance. They are particularly well-suited for offshore oil and gas exploration, marine engineering, chemical processing, pulp and paper production, and desalination facilities. These fittings excel in chloride-rich and high-pressure settings, making them perfect for applications like heat exchangers, pressure vessels, subsea pipelines, and fire-fighting systems. Their superior resistance to crevice corrosion, pitting, and stress cracking ensures they perform reliably in even the most challenging environments.
Yes, custom sizes for Duplex Steel Forged Fittings are available at Devang Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@devangfittings.co.in.
| STANDARD | UNS | |
| Duplex Steel Forged Fittings | S31803 / S32205 |
| DN-NPT | MAJOR DIAMETER MM | TAPPING /DRILL SIZE MM | TPI | PITCH MM |
|---|---|---|---|---|
| 1/16″ | 7.895 | 6.00 | 27 | 0.941 |
| 1/8″ | 10.242 | 8.25 | 27 | 0.941 |
| 1/4″ | 13.616 | 10.70 | 18 | 1.411 |
| 3/8″ | 17.055 | 14.10 | 18 | 1.411 |
| 1/2″ | 21.223 | 17.40 | 14 | 1.814 |
| 3/4″ | 26.568 | 22.60 | 14 | 1.814 |
| 1″ | 33.228 | 28.50 | 11.5 | 2.209 |
| 1¼” | 41.985 | 37.00 | 11.5 | 2.209 |
| 1½” | 48.054 | 43.50 | 11.5 | 2.209 |
| 2″ | 60.092 | 55.00 | 11.5 | 2.209 |
| 2½” | 72.699 | 65.50 | 8 | 3.175 |
| 3″ | 88.608 | 81.50 | 8 | 3.175 |
| 3½” | 101.316 | 94.30 | 8 | 3.175 |
| 4″ | 113.973 | 107.00 | 8 | 3.175 |
| 5″ | 141.300 | 134.384 | 8 | 3.175 |
| 6″ | 168.275 | 161.191 | 8 | 3.175 |
| 8″ | 219.075 | 211.673 | 8 | 3.175 |
| 10″ | 273.050 | 265.311 | 8 | 3.175 |
| 12″ | 323.850 | 315.793 | 8 | 3.175 |
| Description | Class Designation | ||
|---|---|---|---|
| 3000 | 6000 | 9000 | |
| Elbows 45 and 90 degrees, Tees, Crosses, Couplings, Half-Couplings, End or Pipe Caps | 1/2 – 4 | 1/2 – 2 | 1/2 – 2 |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| Pipe Size by Wall Thickness | SCH 80 / XS | SCH 160 | XXS |
Duplex Steel Forged Fittings are widely used in industries requiring high strength and resistance to corrosion, particularly in harsh environments. Common applications include the oil and gas, chemical processing, and marine sectors, where they are employed in pipelines, pressure vessels, and heat exchangers. These fittings are also used in desalination plants, offshore platforms, and power generation facilities, offering excellent performance under high-pressure and high-temperature conditions. Their resistance to stress corrosion cracking and superior mechanical properties make them a reliable choice for critical applications in various industrial sectors.
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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