Tim Fittings is your go-to manufacturer and supplier of Duplex Steel Forged Fittings right here in Wellington, New Zealand. We take pride in delivering strong and corrosion-resistant forged components, offering high-quality fittings that are perfect for critical applications in tough industries. Our Duplex Steel forged fittings are designed to provide excellent mechanical strength and outstanding corrosion resistance, making them a top choice for offshore, petrochemical, marine, and chemical processing environments. At Tim Fittings, we’re dedicated to delivering precision-engineered solutions that meet global quality standards, ensuring efficient and reliable operations across New Zealand.
| 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 |
Our Duplex Steel Forged Fittings are crafted from a unique two-phase microstructure of austenite and ferrite, typically containing about 22–25% chromium, 4–7% nickel, along with added molybdenum and nitrogen to boost performance. This special structure gives Duplex Steel impressive tensile strength (usually around 620–800 MPa) and remarkable resistance to stress corrosion cracking, pitting, and erosion. Plus, these fittings are known for their good weldability and thermal conductivity, maintaining their integrity even in high-pressure and high-temperature situations.
| 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 |
Tim Fittings is a leading supplier of Duplex Steel Forged Fittings in Wellington, New Zealand. 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 Tim Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
You’ll find Duplex Steel Forged Fittings in a variety of applications that demand strength, durability, and resistance to harsh chemicals and seawater. They’re commonly used in offshore oil and gas platforms, desalination plants, chemical processing lines, heat exchangers, and marine engineering systems. These fittings are especially suited for environments rich in chlorides and corrosive substances, where standard stainless steel might fail. In Wellington and across New Zealand, Tim Fittings provides Duplex Steel forged fittings that guarantee a long service life, leak-proof performance, and dependable operation in the most challenging industrial settings.
Yes, custom sizes for Duplex Steel Forged Fittings are available at Tim Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@timfittings.co.nz.
| 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.
©2024 Tim Fittings. All Rights Reserved.
