Zain Fittings stands out as a top-notch manufacturer and supplier of Super Duplex Steel Buttweld Fittings, proudly based in Surabaya, Indonesia. The company has earned a solid reputation for crafting high-quality buttweld fittings that boast remarkable strength, corrosion resistance, and durability. Super Duplex Steel features a well-balanced microstructure of austenite and ferrite, which gives it exceptional resistance to pitting, crevice, and stress corrosion cracking, especially in challenging chloride and marine environments. Zain Fittings provides a comprehensive selection of Super Duplex Steel Buttweld Fittings, including elbows, tees, reducers, crosses, and caps, all designed to meet the rigorous demands of industries like oil and gas, petrochemical, marine, and power generation.
Specifications ASTM A815 / ASME SA815
Dimensions ASME/ANSI B16.9, ASME B16.28, MSS-SP-43
Size 1/2″ NB to 24″NB in
Type Seamless / Welded / Fabricated
Bending Radius R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Thickness Sch 5s, Sch 10s, Sch 40s, Sch 80s, Sch 160s, Sch XXS
These Super Duplex Steel Buttweld Fittings are made up of roughly 25% chromium, 7% nickel, 3.6–4% molybdenum, and a touch of nitrogen to enhance strength and corrosion resistance. Thanks to their dual-phase structure, they achieve impressive tensile strength of around 750–800 MPa, yield strength of about 550 MPa, and an elongation of 25%. Even in low temperatures, these fittings maintain excellent impact toughness and show outstanding resistance to chloride-induced corrosion, making them perfect for aggressive and high-pressure settings. Their metallurgical balance also ensures they resist fatigue and erosion exceptionally well.
| Grade | C | Mn | Si | P | S | Cr | Ni | Mo | N | Fe |
| Super Duplex S32750 | 0.030 max. | 2.00 max. | 1.00 max. | 0.030 max. | 0.020 max. | 22.0 – 23.0 | 4.50 – 6.50 | 3.0 – 3.5 | 0.14 – 0.20 | 63.72 min. |
| Super Duplex S32760 | 0.030 max. | 2.00 max. | 1.00 max. | 0.030 max. | 0.020 max. | 21.0 – 23.0 | 4.50 – 6.50 | 2.50 – 3.50 | 0.08 – 0.20 | 63.54 min |
| UNS No | Grade | Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S32750 | 7.8 | 0.281 | 1350 | 2460 | ||
| S32750 | 2507 | 550 | 795 | 15 | 310 | 32* |
Zain Fittings is a leading supplier of Super Duplex Steel Buttweld Fittings in Jakarta, Indonesia. We offer an extensive range of Super 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 | UNS | WERKSTOFF NR. |
| Super Duplex 2507 | S32750 / S32760 | 1.4410 |
Choose Super Duplex Steel Buttweld Fittings from Zain 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 Buttweld Fittings offer numerous advantages, including exceptional corrosion resistance, particularly in chloride-rich environments, making them ideal for marine, chemical, and petrochemical industries. Their high strength, with yield strength up to 500 MPa and tensile strength ranging from 750-1000 MPa, ensures durability under high pressure. These fittings are resistant to stress corrosion cracking, pitting, and crevice corrosion. Super Duplex Steel also has excellent weldability, making installation and maintenance easier. Their versatility, combined with superior performance, makes them a preferred choice for critical applications in demanding industries.
Yes, custom sizes for Super Duplex Steel Buttweld Fittings are available at Zain Fittings. We offer tailored solutions to meet your specific requirements, ensuring optimal performance for your projects. For more information, please contact us at sales@zainfittings.id
| Nominal Pipe Size | Outside Diameter | Caps | Straight Tees | Straight Crosses | Stub Ends | |||
| inch | mm | inch | Length (inch) | Center to End (inch) | Center to End (inch) | Lap Diameter (inch) | Long Length (inch) | Short Length (inch) |
| 1/2 | 21.3 | 0.840 | 1 | 1 | – | 1 3/8 | 3 | 2 |
| 3/4 | 26.7 | 1.050 | 1 | 1 1/8 | – | 1 11/16 | 3 | 2 |
| 1 | 33.4 | 1.315 | 1 1/2 | 1 1/2 | 1 1/2 | 2 | 4 | 2 |
| 1 1/4 | 42.2 | 1.660 | 1 1/2 | 1 7/8 | 1 7/8 | 2 1/2 | 4 | 2 |
| 1 1/2 | 48.3 | 1.900 | 1 1/2 | 2 1/4 | 2 1/4 | 2 7/8 | 4 | 2 |
| 2 | 60.3 | 2.375 | 1 1/2 | 2 1/2 | 2 1/2 | 3 5/8 | 6 | 2 1/2 |
| 2 1/2 | 73.0 | 2.875 | 1 1/2 | 3 | 3 | 4 1/8 | 6 | 2 1/2 |
| 3 | 88.9 | 3.500 | 2 | 3 3/8 | 3 3/8 | 5 | 6 | 2 1/2 |
| 3 1/2 | 101.6 | 4.000 | 2 1/2 | 3 3/4 | 3 3/4 | 5 1/2 | 6 | 3 |
| 4 | 114.3 | 4.500 | 2 1/2 | 4 1/8 | 4 1/8 | 6 3/16 | 6 | 3 |
| 5 | 141.3 | 5.563 | 3 | 4 7/8 | 4 7/8 | 7 5/16 | 8 | 3 |
| 6 | 168.3 | 6.625 | 3 1/2 | 5 5/8 | 5 5/8 | 8 1/2 | 8 | 3 1/2 |
| 8 | 219.1 | 8.625 | 4 | 7 | 7 | 10 5/8 | 8 | 4 |
| 10 | 273.1 | 10.750 | 5 | 8 1/2 | 8 1/2 | 12 3/4 | 10 | 5 |
| 12 | 323.9 | 12.750 | 6 | 10 | 10 | 15 | 10 | 6 |
| DN | Schedule 10S | Schedule 40S | Schedule 80S | ||||||
| 900 Elbow | 450 Elbow | Equal tee | 900 Elbow | 450 Elbow | Equal tee | 900 Elbow | 450 Elbow | 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 Buttweld Fittings are extensively utilized in industries that demand reliable performance in harsh and corrosive conditions. They are particularly well-suited for offshore oil platforms, subsea pipelines, desalination plants, chemical processing systems, and heat exchangers. Their remarkable resistance to seawater and chloride attack makes them ideal for marine engineering and pressure vessels. Additionally, these fittings are also used in the paper and pulp, wastewater treatment, and food processing industries, where durability, corrosion resistance, and mechanical strength are crucial for safe and long-lasting operations.
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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