Super Duplex Steel S32750 Flanges are engineered to dominate the most aggressive industrial environments where strength, corrosion resistance, and absolute reliability are essential. Manufactured from premium Super Duplex stainless steel, these flanges deliver exceptional mechanical strength and outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Designed to perform under extreme pressure, high temperature, and chloride-rich conditions, they ensure secure, leak-free connections in critical piping systems. Widely trusted in offshore, oil and gas, petrochemical, and marine industries, Super Duplex Steel S32750 Flanges represent durability, safety, and uncompromising performance across global industrial applications today.
Super Duplex Steel S32750 flanges have approximately 25% chromium, 7% nickel, 4% molybdenum, and traces of nitrogen and manganese and possess good pitting and corrosion resistance. They possess the ferritic steel’s strength and the austenitic steel’s corrosion resistance. They have good tensile strength of approximately 800 MPa and yield strength of roughly 550 MPa. S32750 flanges have excellent fatigue and toughness strength, respectively, even in aggressive conditions, for which they are ideally used in high-pressure and corrosive processes in the marine, chemical, and oil & gas industries.
Specifications : ASTM A182 / ASME SA182
Dimensions : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Size : 1/8″ NB TO 24″ NB
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Grades : S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Faizan Flanges, a leading supplier in Doha, Qatar, offers an extensive selection of Super Duplex Steel S32750 Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S32750 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S32750 | 7.8 | 0.281 | 1350 | 2460 |
Super Duplex Steel S32750 flanges have extensive uses in industries where strength, corrosion resistance, and durability are the top priorities. They are typically employed in the offshore oil and gas exploration operations, subsea equipment, and desalination plants due to their good seawater and chloride stress corrosion resistance. They have extensive applications in chemical processing, pressure vessels, heat exchangers, and pulp and paper industries too. These flanges are best for high-temperature and pressure use, with long life and reliability. Their superior mechanical and anti-corrosion properties render them ideal for use in mission-critical power generation, marine, and environmental engineering applications.
| Nom. Pipe Size | O | T | R | X | No./Dia. of Holes | Bolt Circle Dia. | L2 | H | B2 | L | B | r | L3 | B3 | D |
| 1/2 | 3.5 | 0.44 | 1.38 | 1.19 | 4-0.62 | 2.38 | 1.88 | 0.84 | 0.62 | 0.62 | 0.88 | 0.12 | 0.62 | 0.9 | 0.38 |
| 3/4 | 3.88 | 0.5 | 1.69 | 1.5 | 4-0.62 | 2.75 | 2.06 | 1.05 | 0.82 | 0.62 | 1.09 | 0.12 | 0.62 | 1.11 | 0.44 |
| 1 | 4.25 | 0.56 | 2 | 1.94 | 4-0.62 | 3.12 | 2.19 | 1.32 | 1.05 | 0.69 | 1.36 | 0.12 | 0.69 | 1.38 | 0.5 |
| 1-1/4 | 4.62 | 0.62 | 2.5 | 2.31 | 4-0.62 | 3.5 | 2.25 | 1.66 | 1.38 | 0.81 | 1.7 | 0.19 | 0.81 | 1.72 | 0.56 |
| 1-1/2 | 5 | 0.68 | 2.88 | 2.56 | 4-0.62 | 3.88 | 2.44 | 1.9 | 1.61 | 0.88 | 1.95 | 0.25 | 0.88 | 1.97 | 0.62 |
| 2 | 6 | 0.75 | 3.62 | 3.06 | 4-0.75 | 4.75 | 2.5 | 2.38 | 2.07 | 1 | 2.44 | 0.31 | 1 | 2.46 | 0.69 |
| 2-1/2 | 7 | 0.88 | 4.12 | 3.56 | 4-0.75 | 5.5 | 2.75 | 2.88 | 2.47 | 1.12 | 2.94 | 0.31 | 1.12 | 2.97 | 0.75 |
| 3 | 7.5 | 0.94 | 5 | 4.25 | 4-0.75 | 6 | 2.75 | 3.5 | 3.07 | 1.19 | 3.57 | 0.38 | 1.19 | 3.6 | 0.81 |
| 3-1/2 | 8.5 | 0.94 | 5.5 | 4.81 | 8-0.75 | 7 | 2.81 | 4 | 3.55 | 1.25 | 4.07 | 0.38 | 1.25 | 4.1 | 0.88 |
| 4 | 9 | 0.94 | 6.19 | 5.31 | 8-0.75 | 7.5 | 3 | 4.5 | 4.03 | 1.31 | 4.57 | 0.44 | 1.31 | 4.6 | 0.94 |
| 5 | 10 | 0.94 | 7.31 | 6.44 | 8-0.88 | 8.5 | 3.5 | 5.56 | 5.05 | 1.44 | 5.66 | 0.44 | 1.44 | 5.69 | 0.94 |
| 6 | 11 | 1 | 8.5 | 7.56 | 8-0.88 | 9.5 | 3.5 | 6.63 | 6.07 | 1.56 | 6.72 | 0.5 | 1.56 | 6.75 | 1.06 |
| 8 | 13.5 | 1.12 | 10.62 | 9.69 | 8-0.88 | 11.75 | 4 | 8.63 | 7.98 | 1.75 | 8.72 | 0.5 | 1.75 | 8.75 | 1.25 |
| 10 | 16 | 1.19 | 12.75 | 12 | 12-1.00 | 14.25 | 4 | 10.75 | 10.02 | 1.94 | 10.88 | 0.5 | 1.94 | 10.92 | 1.31 |
| 12 | 19 | 1.25 | 15 | 14.38 | 12-1.00 | 17 | 4.5 | 12.75 | 12 | 2.19 | 12.88 | 0.5 | 2.19 | 12.92 | 1.56 |
| 14 | 21 | 1.38 | 16.25 | 15.75 | 12-1.12 | 18.75 | 5 | 14 | 13.25 | 2.25 | 14.14 | 0.5 | 3.12 | 14.18 | 1.63 |
| 16 | 23.5 | 1.44 | 18.5 | 18 | 16-1.12 | 21.25 | 5 | 16 | 15.25 | 2.5 | 16.16 | 0.5 | 3.44 | 16.19 | 1.75 |
| 18 | 25 | 1.56 | 21 | 19.88 | 16-1.25 | 22.75 | 5.5 | 18 | 17.25 | 2.69 | 18.18 | 0.5 | 3.81 | 18.2 | 1.94 |
| 20 | 27.5 | 1.69 | 23 | 22 | 20-1.25 | 25 | 5.69 | 20 | 19.25 | 2.88 | 20.2 | 0.5 | 4.06 | 20.25 | 2.13 |
| 22 | 29.5 | 1.81 | 25.25 | 24.25 | 20-1.38 | 27.25 | 5.88 | 22 | 21.25 | 3.13 | 22.22 | 0.5 | 4.25 | 22.25 | 2.38 |
| 24 | 32 | 1.88 | 27.25 | 26.12 | 20-1.38 | 29.5 | 6 | 24 | 23.25 | 3.25 | 24.25 | 0.5 | 4.38 | 24.25 | 2.5 |
Yes, we offer custom sizes for Super Duplex Steel S32750 Flanges to meet specific project needs. Our team at Faizan Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@faizanflanges.com.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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