Harry Fittings is a reliable supplier and manufacturer of superior Duplex Steel Buttweld Fittings from Houston, USA. Renowned for their high-precision engineering and top-of-the-line materials, the company deals in various buttweld fittings including elbows, tees, reducers, and caps. All these are manufactured from Duplex stainless steel with both superior mechanical strength and excellent corrosion resistance. Having compliance with ASTM A815 and ASME B16.9 standards, Harry Fittings ensures every product adheres to the top-level industry standards. Their Duplex Steel Buttweld Fittings find perfect applications in high-demand sectors of oil & gas, petrochemicals, marine, and chemical industries, where durability and extended performance are guaranteed.
| 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 Buttweld Fittings are made from austenitic-ferritic stainless steel, typically containing 22–25% chromium, 4–7% nickel, 2.5–3.5% molybdenum, and nitrogen. This composition offers excellent resistance to pitting, stress corrosion cracking, and crevice corrosion. Duplex steel exhibits a high tensile strength of approximately 620 MPa and a yield strength of about 450 MPa—nearly double that of standard stainless steels. The alloy sustains good toughness, even at subzero temperatures, and exhibits excellent fatigue resistance. Both these characteristics make Duplex Steel Buttweld Fittings ideal for use in structural and pressure-containing applications under hostile operating conditions.
| 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 |
Harry Fittings is a leading supplier of Duplex Steel Buttweld Fittings in Houston, USA. 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 Harry 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 Harry Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@harryfittings.us
Duplex Steel Buttweld Fittings are commonly employed in applications where strength, corrosion resistance, and toughness are needed. Some of them include offshore petroleum and gas platforms, petrochemical plants, chemical processing equipment, marine components, and heat exchangers. Their chloride corrosion resistance makes them suitable for seawater piping, desalination plant equipment, and ship construction. They find application in the pulp and paper industry in bleaching processes. Their superior mechanical properties and resistance to corrosion minimize maintenance and maximize the working life of pipeline systems. They are also selected for structural applications where high strength-to-weight ratio and cost-effectiveness are essential.
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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