Heer Fittings is a well-established manufacturer and exporter of Duplex Steel Buttweld Fittings in Delhi, India, offering high-strength and corrosion-resistant piping fittings for critical industrial processes. These Buttweld fittings—such as elbows, tees, reducers, caps, and crosses—are produced in accordance with ASME B16.9 and ASTM A815 specifications. Duplex stainless steel involves the characteristics of austenitic and ferritic stainless steels, having enhanced strength, very good resistance to corrosion, and good weldability. Heer Fittings provides duplex fittings in grades like UNS S31803 and S32205 that are suitable for resisting extreme conditions and corrosive chemical exposure.
| 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 steel often has approximately 22% chromium, 5–6% nickel, and 3% molybdenum, with a balanced ferrite-austenite microstructure. These fittings provide excellent mechanical strength, with yield strength being approximately twice the standard austenitic stainless steel—usually higher than 450 MPa, and tensile strength varying between 620 to 800 MPa. Duplex steel is also characterized by high resistance to chloride stress corrosion cracking, pitting, and crevice corrosion. Such mechanical and corrosion resistance makes duplex a suitable choice for severe service conditions without compromising formability and weldability.
| 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 |
Heer Fittings is a leading supplier of Duplex Steel Buttweld Fittings in Delhi, India. 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 Heer Fittings for superior quality, exceptional corrosion resistance, and reliable performance in extreme conditions. We offer customized solutions backed by expert support and industry experience.
Yes, custom sizes for Duplex Steel Buttweld Fittings are available at Heer Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@heerfittings.com
Duplex Steel Buttweld Fittings are extensively utilized in offshore oil and gas platforms, desalination plants, chemical processing systems, pulp and paper industries, and pressure vessel construction. Their low weight-to-strength ratio enables reduced wall thickness without sacrificing performance, leading to less overall system cost and weight. These fittings excel in brackish water, chloride environments, and acidic conditions where standard stainless steels are not suitable. Their excellent service life, resistance to localized corrosion, and better mechanical properties render duplex steel fittings a promising option for high-stakes and corrosive applications.
Get in touch with one of our Technical Sales Representatives to request a quote or get answers to any questions you may have.
©2024 Heer Fittings. All Rights Reserved.
