Nguyen Fittings and Plates, based in Da Nang, Vietnam, offers high-performance Duplex Steel Buttweld Fittings, designed for situations that require both corrosion resistance and strength. Our fittings are produced from duplex stainless steel with a balanced ferrite-austenite composition and adhere to ASTM A815 and ASME B16.9 standards. Through precision forging and hot forming, we supply fittings with superior performance in aggressive chemical and marine environments. Nguyen’s commitment to excellence ensures reliable quality and long-term service in demanding infrastructure.
| Size | : | 1/2″ to 36″ |
| Standard | : | ASTM / ASME A815 / SA815. |
| Dimensions | : | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
| Grade | : | UNS No. S31803, S32205, S32550, S32750, S32760. |
| Type | : | Seamless & Welded |
| Schedule | : | Sch 5 TO Sch XXS. |
Duplex stainless steel typically comprises 22% chromium, 5% nickel, 3% molybdenum, 0.14% nitrogen, and the remainder iron. It delivers tensile strength of 620–800 MPa, yield strength of 450–550 MPa, and excellent toughness. The microstructure confers high pitting and stress corrosion cracking resistance, along with good ductility and weldability. Its two-phase structure optimizes strength and corrosion resistance.
| 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 |
Nguyen Fittings is a leading supplier of Duplex Steel Buttweld Fittings in Da Nang, Vietnam. We offer an extensive range of Duplex Steel Buttweld 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 | WERKSTOFF NR. | UNS |
| Duplex 2205 | 1.4462 | S31803 / S32205 |
Choose Duplex Steel Buttweld Fittings from Nguyen 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 Buttweld Fittings offer numerous advantages, including exceptional strength, high corrosion resistance, and excellent resistance to pitting and stress corrosion cracking. Their unique composition, combining both austenitic and ferritic structures, provides superior mechanical properties, such as high tensile and yield strength, making them suitable for high-pressure and high-temperature applications. These fittings are highly durable in aggressive environments, including those exposed to seawater, chemicals, and other corrosive substances. Duplex Steel Buttweld Fittings are also cost-effective, offering enhanced performance with reduced material costs compared to other stainless steels. They are ideal for critical industrial applications.
Yes, custom sizes for Duplex Steel Buttweld Fittings are available at Nguyen Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@nguyenfittings.com
Duplex buttweld fittings find applications in offshore platforms, desalination, chemical processing, power generation, and marine engineering. They are used in elbows, tees, reducers, and stub ends in corrosive fluid systems. They resist chloride-containing environments, acidic media, and high-pressure pipelines. They also find applications in oil & gas subsea systems, storage terminal, and coastal structures exposed to the sea and requiring mechanical as well as environment toughness.
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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