Teerasil Fittings and Plates is a trusted manufacturer and supplier located in Thailand, Bangkok, specializing in high-quality Duplex Steel UNS S31803 Forged Fittings. These fittings are designed for industries that require exceptional strength, corrosion resistance, and durability in critical piping systems. With a reputation for precision engineering and a commitment to international standards, the company prioritizes customer satisfaction by providing leak-proof, dimensionally accurate, and long-lasting forged fittings. Their products cater to sectors such as oil and gas, petrochemical, chemical processing, desalination, and power generation. Thanks to advanced forging techniques, rigorous quality control, and comprehensive testing, Teerasil Fittings and Plates guarantees safe, efficient, and cost-effective solutions for challenging industrial environments around the globe.
| Size | : | 1/2″NB TO 4″NB IN |
| Standard | : | ASTM A182 / ASME SA182 |
| Dimensions | : | ANSI/ASME B16.11 & BS3799, etc. |
| Grade | : | UNS S31803, S32205, S2205, S32550, S32750, S32760. |
| Class | : | 2000LBS, 3000LBS, 6000LBS, 9000LBS, etc. |
The Duplex Steel UNS S31803 Forged Fittings are crafted from a well-balanced austenitic-ferritic microstructure, which offers outstanding tensile and yield strength, enhanced toughness, and exceptional resistance to stress corrosion cracking, pitting, and crevice corrosion. These fittings are known for their good weldability, dependable structural integrity, and consistent mechanical properties across various temperatures and pressures, making them perfect for high-stress and corrosive applications.
| UNS S31803 | Ni | Cr | Mo | Mn | Si | C | N | S | P | Fe |
| min | 4.5 | 22.0 | 3.0 | – | – | – | 0.14 | – | – | – |
| max | 6.5 | 23.0 | 3.5 | 2.0 | 1.0 | 0.03 | 0.2 | 0.02 | 0.03 | Balance |
| Grade | S31803 |
| Density (g/cm 3) | 7.805 |
| Density (lb/in 3) | 0.285 |
| Melting Point (°C) | 1420 – 1465 |
| Melting Point (°F) | 2588 – 2669; |
Teerasil Fittings is a leading supplier of Duplex Steel UNS S31803 Forged Fittings in Bangkok, Thailand. We offer an extensive range of Duplex Steel UNS S31803 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 UNS S31803 Forged Fittings from Teerasil 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 Forged Fittings offer numerous advantages, including exceptional corrosion resistance, especially in chloride-rich environments, making them ideal for industries such as oil and gas, chemical processing, and marine. Their unique duplex structure provides high strength, excellent resistance to stress corrosion cracking, and superior fatigue resistance. These fittings also exhibit excellent weldability, ensuring easy installation and maintenance. With impressive toughness and the ability to withstand high-pressure and high-temperature conditions, Duplex Steel UNS S31803 Forged Fittings deliver long-lasting durability and reliable performance in critical applications.
Yes, custom sizes for Duplex Steel UNS S31803 Forged Fittings are available at Teerasil Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@teerasilfittings.com.
| 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 |
You’ll find Duplex Steel UNS S31803 Forged Fittings in a variety of settings, including offshore platforms, chemical processing plants, heat exchangers, marine engineering systems, and water treatment facilities. They’re also utilized in the pulp and paper industry, power generation units, and subsea pipelines, where resistance to harsh chemicals and seawater is essential. Their unique blend of high mechanical strength, corrosion resistance, and long operational life ensures safe, continuous, and efficient performance in some of the most demanding industrial conditions worldwide.
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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