Ferdi Fittings, based in Istanbul, Turkey, is a top-notch manufacturer and supplier of high-performance pipe fittings, specializing in a wide array of Super Duplex Steel Forged Fittings. Known for their remarkable strength and resistance to corrosion, these fittings are designed to excel in the toughest conditions. Ferdi Fittings follows strict international standards, guaranteeing quality, durability, and reliability in every product. With a commitment to advanced metallurgy and precision forging, the company caters to sectors like offshore oil & gas, petrochemicals, marine, and chemical processing. Ferdi Fittings is a dependable partner for critical applications that demand robust and long-lasting solutions.
Specifications : ASTM A182 / ASME SA182
Size : 1/2″NB TO 4″NB IN
Class : 2000LBS, 3000LBS, 6000LBS, 9000LBS, etc.
Type : Socket Weld (S/W) and SCREWED (SCRD) – NPT, BSP, BSPT, Threaded Fittings
Super Duplex Steel Forged Fittings from Ferdi Fittings are crafted from top-quality materials like UNS S32750 and UNS S32760. These alloys boast a high content of chromium (24–26%), nickel (6–8%), and molybdenum (3–5%), providing exceptional resistance to corrosion, particularly against chloride-induced stress corrosion cracking. They feature impressive mechanical properties, including a tensile strength of about 750 MPa and a yield strength of roughly 550 MPa, along with excellent impact toughness. The duplex structure significantly enhances resistance to pitting and crevice corrosion, making these fittings perfect for high-pressure, high-temperature, and highly corrosive environments.
| UNS | Grade | C | Si | Mn | P | S | Cr | Mo | Ni | N | Other |
| S32750 | 2507 | 0.030 | 0.80 | 1.20 | 0.035 | 0.020 | 24.0/26.0 | 3.0/5.0 | 6.00/8.00 | 0.24/0.32 | Cu:0.50 |
| UNS | Grade | Proof Stress 0.2% (MPa) | Tensile Strength (MPa) | Elongation A5(%) | Hardness Max | |
| HB | HRB | |||||
| S32750 | 2507 | 550 | 795 | 15 | 310 | 32* |
Ferdi Fittings is a leading supplier of Super Duplex Steel Forged Fittings in Istanbul, Turkey. We offer an extensive range of Super 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.
| STANDARD | UNS | WERKSTOFF NR. |
| Super Duplex S2750 | S32750 | 1.4410 |
Choose Super Duplex Steel Forged Fittings from Ferdi 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 offer several key advantages, including exceptional resistance to corrosion, especially in chloride and seawater environments, making them ideal for marine and chemical processing applications. Their high strength-to-weight ratio ensures durability and reliability even in high-pressure systems. These fittings also resist stress corrosion cracking, pitting, and crevice corrosion. With excellent weldability and toughness at both high and low temperatures, Super Duplex Steel Forged Fittings provide superior performance in harsh conditions, extending the life of the equipment and reducing maintenance costs.
Yes, custom sizes for Super Duplex Steel Forged Fittings are available at Ferdi Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@ferdifittings.com
| NPS (Normal Pipe Size) | O.D. (Outside Daimeter) | Elbow 90 Deg | Elbow 45 Deg | Return Elbow 180 Deg | ||||
|---|---|---|---|---|---|---|---|---|
| (inch) | Long Radius Elbow | Short Radius | Long Radius Elbow | Long Radius Elbow | ||||
| (millimeter/ MM) | (inch./ Inches) | Center to Face (Inches) | Center to Face (Inches) | Center to Face (Inches) | Radius (Inches) | Center to Center (Inches) | Back to face (Inches) | |
| 1/2 | 21.3 | 0.840 | 1 1/2 | – | 5/8 | 2 | 1 7/8 | |
| 3/4 | 26.7 | 1.050 | 1 1/8 | – | 7/16 | 2 1/4 | 1 11/16 | |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 | 7/8 | 3 | 2 3/16 | |
| 1 1/4 | 42.2 | 1.660 | 1 7/8 | 1 1/4 | 1 | 3 3/4 | 2 3/4 | |
| 1 1/2 | 48.3 | 1.900 | 2 1/4 | 1 1/2 | 1 1/8 | 3 | 4 1/2 | 3 1/4 |
| 2 | 60.3 | 2.375 | 3 | 2 | 1 3/8 | 4 | 6 | 4 3/16 |
| 2 1/2 | 73.0 | 2.875 | 3 3/4 | 2 1/2 | 1 3/4 | 5 | 7 1/2 | 5 3/16 |
| 3 | 88.9 | 3.500 | 4 1/2 | 3 | 2 | 6 | 9 | 6 1/4 |
| 3 1/2 | 101.6 | 4.000 | 5 1/4 | 3 1/2 | 2 1/4 | 7 | 10 1/2 | 7 1/4 |
| 4 | 114.3 | 4.500 | 6 | 4 | 2 1/2 | 8 | 12 | 8 1/4 |
| 5 | 141.3 | 5.563 | 7 1/2 | 5 | 3 1/8 | 10 | 15 | 10 5/16 |
| 6 | 168.3 | 6.625 | 9 | 6 | 3 3/4 | 12 | 18 | 12 5/16 |
| 8 | 219.1 | 8.625 | 12 | 8 | 5 | 12 | 24 | 16 5/16 |
| 10 | 273.1 | 10.750 | 15 | 10 | 6 1/4 | 15 | 30 | 20 3/8 |
| 12 | 323.9 | 12.750 | 18 | 12 | 7 1/2 | 18 | 36 | 24 3/8 |
| DN (Normal Pipe Size) For ASME B16.9 | Schedule 10S | Schedule 40S | Schedule 80S | ||||||
| Elbow 90 Deg | Elbow 45 Deg | B16.9 Equal Tee | Elbow 90 Deg | Elbow 45 Deg | B16.9 Equal Tee | Elbow 90 Deg | Elbow 45 Deg | B16.9 Equal Tee | |
| 8 | 0.02 | 0.01 | 0.03 | 0.03 | 0.02 | 0.06 | 0.04 | 0.03 | 0.07 |
| 10 | 0.03 | 0.02 | 0.05 | 0.03 | 0.02 | 0.03 | 0.06 | 0.04 | 0.09 |
| 15 | 0.06 | 0.03 | 0.09 | 0.08 | 0.04 | 0.10 | 0.10 | 0.05 | 0.14 |
| 20 | 0.07 | 0.03 | 0.13 | 0.08 | 0.04 | 0.17 | 0.11 | 0.05 | 0.20 |
| 25 | 0.14 | 0.08 | 0.28 | 0.15 | 0.11 | 0.29 | 0.22 | 0.14 | 0.38 |
| 32 | 0.23 | 0.11 | 0.49 | 0.26 | 0.17 | 0.59 | 0.40 | 0.23 | 0.68 |
| 40 | 0.30 | 0.17 | 0.68 | 0.40 | 0.23 | 0.86 | 0.51 | 0.29 | 1.02 |
| 50 | 0.50 | 0.25 | 0.85 | 0.70 | 0.4 | 1.28 | 0.91 | 0.59 | 1.59 |
| 65 | 0.85 | 0.48 | 1.41 | 1.40 | 0.77 | 2.19 | 1.81 | 0.99 | 3.13 |
| 80 | 1.25 | 0.63 | 1.77 | 2.20 | 1.08 | 3.31 | 2.97 | 1.50 | 4.45 |
| 90 | 1.70 | 0.75 | 2.67 | 2.83 | 1.42 | 4.08 | 4.00 | 2.00 | 5.44 |
| 100 | 2.10 | 1.08 | 3.46 | 4.47 | 2.09 | 5.27 | 6.18 | 2.81 | 7.71 |
| 150 | 5.45 | 2.72 | 8.07 | 10.89 | 5.44 | 10.99 | 16.32 | 8.16 | 13.61 |
| 200 | 10.20 | 5.33 | 15.65 | 21.54 | 10.77 | 20.91 | 33.11 | 16.56 | 28.12 |
| 250 | 18.15 | 9.75 | 26.46 | 38.56 | 19.27 | 35.38 | 51.71 | 25.86 | 49.90 |
| 300 | 25.80 | 13.62 | 39.46 | 59.42 | 29.71 | 62.14 | 79.38 | 39.69 | 83.91 |
Super Duplex Steel Forged Fittings play a crucial role in industries where extreme mechanical strength and outstanding corrosion resistance are vital. They’re commonly found in offshore oil rigs, subsea equipment, desalination plants, petrochemical refineries, and marine engineering, ensuring reliable performance even in harsh conditions. Their ability to endure high pressure and resist corrosion from chlorides and acidic substances makes them ideal for aggressive fluid environments.
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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