Super Duplex Steel S32750 Buttweld Fittings Supplier
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Midland Alloys Inc. is a trusted manufacturer and supplier of Super Duplex Steel S32750 Buttweld Fittings for demanding industrial applications. Our Super Duplex Steel UNS S32750 fittings are ideal for harsh environments such as chemical processing units, offshore platforms and desalination plants because of their exceptional strength and exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. We provide a large range of S32750 Super Duplex Buttweld Fittings in seamless and welded forms such as elbows, tees, reducers, caps and stub ends. Every fitting meet international standards like ASTM A815 and ASME B16.9 guaranteeing superior dimensional accuracy and mechanical performance. To meet the needs of their project, customers can request custom dimensions or select from a range of types and sizes. With the support of our ISO-certified quality management system, we guarantee on-time delivery, maintain ready stock and provide competitive pricing.
What are Super Duplex S32750 Buttweld Fittings?
Super Duplex S32750 Buttweld Fittings are welded parts that join or reroute super duplex steel pipes. Super Duplex Steel S32750 a ferritic austenitic stainless steel known for its balanced dual-phase microstructure used to make these fittings. The alloy primarily contains chromium, nickel, molybdenum, and nitrogen, which contribute to its structural integrity.
This grade maintains a stable ferrite-austenite structure throughout forming and fabrication processes. It supports common welding and forming techniques without losing mechanical consistency or dimensional accuracy. These fittings conform to ASTM A815 for wrought ferritic/austenitic stainless steel and ASME B16.9 for factory-made buttweld connections. Even after standard heat treatment, Super Duplex 2750 Buttweld Fittings retain their structural characteristics and are ready for integration into pressure-rated systems.
Advantages of Super Duplex Steel S32750 Buttweld Fittings
- A high concentration of chromium, nickel and molybdenum improves resistance to failure brought on by stress.
- Overall mechanical stability is enhanced by a dual phase ferritic austenitic microstructure.
- Maintains its dimensional stability even after extended exposure to heat.
- Retains toughness and grain structure following standard solution annealing.
- Non magnetic behaviour in annealed condition supports specialized service needs.
- Nitrogen stabilized structure refines phase balance and mechanical uniformity.
Specification of Super Duplex S32750 Butt Weld Pipe Fittings
Super Duplex S32750 butt weld pipe fittings follow precise standards to ensure consistent mechanical performance and dimensional accuracy. The table below includes key technical specifications for material grade, dimensions, standards, and types available.
Seamless Butt Weld Fittings: 1/2" - 10" Welded Butt Weld Fittings: 1/2" - 48"
ASTM A815 / ASME SA815
Seamless / Welded / Fabricated
90º Elbows, 45º Elbows, Tees, Crosses, Reducers, Pipe Cap, Stub End, Pipe Bend
SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Beveled Ends, Plain Ends
SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Pickled Finish,Sand/Shot Blasted Finish, Polished Finish
Type of Super Duplex Steel S32750 Buttweld Fittings
Super Duplex Steel UNS S32750 Buttweld Fittings are heavy-duty welded components used in pipelines to manage direction, flow, and connection strength. These fittings are appropriate for demanding pipeline layout because of their high tensile strength and superior dimensional control. They come in a variety of forms and assist engineers in creating adaptable, pressure rated piping systems in different arrangement.
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ElbowChanges the direction of flow by 45° or 90° in long or short radius design.
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TeeDivides or combines flow at a 90° angle in equal or reducing sizes.
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ReducerConnects pipes of different diameters, either concentrically or eccentrically.
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stub endWorks with lap joint flanges for easy assembly and disassembly.
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CrossJoins four pipes together in a single plane for balanced flow distribution.
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End CapCloses the a pipe end to halt flow or get ready for additional connection.
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BendOffers choices like a 3D or 5D radius for a more seamless direction change.
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nipplesA brief pipe segment used to connect component at close range.
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Collar / CouplingJoins two straight pipe segment to allow fluid to flow continuously.
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Return Bend180° flow direction reversal in a small package.
Technical Details & Delivery Condition
| 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 |
| STANDARD | WERKSTOFF NR. | UNS |
| Super Duplex 2507 | 1.4410 | S32750 |
Duplex & Super Duplex Steel Buttweld Fittings Grades We Offer
Super Duplex Steel S32750 Buttweld Fittings Schedule
| NB | OD | SCH XXS | SCH 80S | SCH 5S | SCH 160S | SCH 10S | SCH 40S | |||||||
| mm | in. | mm | WT (mm) | Weight (kg/m) | WT (mm) | Weight (kg/m) | Weight (kg/m) | WT (mm) | Weight (kg/m) | WT (mm) | WT (mm) | Weight (kg/m) | WT (mm) | Weight (kg/m) |
| 10 | 3/8 | 17.1 | – | – | 3.20 | 1.10 | 0.490 | 1.24 | – | – | 1.65 | 0.63 | 2.31 | 0.845 |
| 25 | 1 | 33.4 | 9.09 | 5.45 | 4.55 | 3.24 | 1.30 | 1.65 | 4.24 | 6.35 | 2.77 | 2.09 | 3.38 | 2.50 |
| 150 | 6 | 168.3 | 21.95 | 79.22 | 10.97 | 42.7 | 11.32 | 2.77 | 67.56 | 18.2 | 3.40 | 13.84 | 7.11 | 28.3 |
| 15 | 1/2 | 21.3 | 7.47 | 2.55 | 3.75 | 1.62 | 0.800 | 1.65 | 1.94 | 4.75 | 2.11 | 1.00 | 2.77 | 1.27 |
| 40 | 1 1/2 | 48.3 | 10.16 | 9.54 | 5.08 | 5.41 | 1.91 | 1.65 | 7.25 | 7.14 | 2.77 | 3.11 | 3.68 | 4.05 |
| 32 | 1 1/4 | 42.2 | 9.70 | 7.77 | 4.85 | 4.47 | 1.65 | 1.65 | 5.61 | 6.35 | 2.77 | 2.70 | 3.56 | 3.38 |
| 50 | 2 | 60.3 | 11.07 | 13.44 | 5.54 | 7.48 | 2.40 | 1.65 | 11.1 | 8.74 | 2.77 | 3.93 | 3.91 | 5.44 |
| 600 | 24 | 609.6 | – | – | 30.96 | 442.08 | 82.47 | 5.54 | 808.22 | 59.54 | 6.35 | 94.45 | 17.48 | 255.41 |
| 65 | 2 1/2 | 73.0 | 14.2 | 20.39 | 7.01 | 11.4 | 3.69 | 2.11 | 14.9 | 9.53 | 3.05 | 5.26 | 5.16 | 8.63 |
| 80 | 3 | 88.9 | 15.24 | 27.65 | 7.62 | 15.2 | 4.51 | 2.11 | 21.3 | 11.1 | 3.05 | 6.45 | 5.49 | 11.30 |
| 300 | 12 | 323.9 | 25.40 | 186.97 | 12.7 | 132.0 | 31.25 | 3.96 | 238.76 | 33.32 | 4.57 | 36.00 | 9.52 | 73.88 |
| 3 | 1/8 | 10.3 | – | – | 2.41 | 0.47 | 0.276 | 1.24 | – | – | 1.24 | 0.28 | 1.73 | 0.37 |
| 100 | 4 | 114.3 | 17.12 | 41.03 | 8.56 | 22.3 | 5.84 | 2.11 | 33.54 | 13.49 | 3.05 | 8.36 | 6.02 | 16.07 |
| 125 | 5 | 141.3 | 19.05 | 57.43 | 9.53 | 31.97 | 9.47 | 2.77 | 49.11 | 15.88 | 3.40 | 11.57 | 6.55 | 21.8 |
| 250 | 10 | 273.1 | 25.40 | 155.15 | 12.7 | 96.0 | 22.63 | 3.40 | 172.4 | 28.6 | 4.19 | 27.78 | 9.27 | 60.5 |
| 200 | 8 | 219.1 | 22.23 | 107.8 | 12.7 | 64.6 | 14.79 | 2.77 | 111.2 | 23.0 | 3.76 | 19.96 | 8.18 | 42.6 |
| 350 | 14 | 355.6 | – | – | 19.05 | 158.08 | 34.36 | 3.96 | 281.70 | 35.71 | 4.78 | 41.3 | 11.13 | 94.59 |
| 6 | 1/4 | 13.7 | – | – | 3.02 | 0.80 | 0.390 | 1.24 | – | – | 1.65 | 0.49 | 2.24 | 0.631 |
| 400 | 16 | 406.4 | – | – | 21.41 | 203.33 | 41.56 | 4.19 | 365.11 | 40.46 | 4.78 | 47.29 | 12.7 | 123.30 |
| 20 | 3/4 | 26.7 | 7.82 | 3.63 | 3.91 | 2.20 | 1.03 | 1.65 | 2.89 | 5.54 | 2.11 | 1.28 | 2.87 | 1.68 |
| 500 | 20 | 508.0 | – | – | 26.19 | 311.2 | 59.25 | 4.78 | 564.68 | 49.99 | 5.54 | 68.71 | 15.09 | 183.42 |
| 450 | 18 | 457.2 | – | – | 23.8 | 254.36 | 46.80 | 4.19 | 466.40 | 45.71 | 4.78 | 53.42 | 14.27 | 155.80 |
Super Duplex Steel S32750 Buttweld Fittings Schedule Weight Chart
| Pipe Elbow Nominal Size | Pipe Elbow Outside Diameter Y | Wall Thickness T (Pipe Elbow Schedule) | 45 Deg. Elbow LR Centre to Face B | 45 Deg. Elbow LR Weight | 90 Deg. Elbow LR Centre to Face A | 90 Deg. Elbow LR Weight | 90 Deg. Elbow SR Centre to Face A | 90 Deg. Elbow SR Weight | ||
| mm | in | mm | mm | Schedule | mm | kg | mm | kg | mm | kg |
| 15 | 1/2” | 21.3 | 2.78 | STD | 15.9 | 0.04 | 38.1 | 0.08 | – | – |
| 3.73 | X.S | 15.9 | 0.05 | 38.1 | 0.10 | – | – | |||
| 20 | 3/4” | 26.7 | 2.87 | STD | 11.1 | 0.04 | 28.6 | 0.08 | – | – |
| 3.91 | X.S | 11.1 | 0.05 | 28.6 | 0.11 | – | – | |||
| 25 | 1” | 33.4 | 3.38 | STD | 22.2 | 0.09 | 38.1 | 0.15 | 25.4 | 0.11 |
| 4.55 | X.S | 22.2 | 0.11 | 38.1 | 0.19 | 25.4 | 0.14 | |||
| 32 | 11/4” | 42.2 | 3.56 | STD | 25.4 | 0.14 | 47.6 | 0.28 | 31.75 | 0.18 |
| 4.85 | X.S | 25.4 | 0.2 | 47.6 | 0.39 | 31.75 | 0.24 | |||
| 40 | 11/2” | 48.3 | 3.68 | STD | 28.6 | 0.2 | 57.1 | 0.4 | 38.1 | 0.26 |
| 5.08 | X.S | 28.6 | 0.25 | 57.1 | 0.5 | 38.1 | 0.35 | |||
| 50 | 2” | 60.3 | 3.91 | STD | 34.9 | 0.36 | 76.2 | 0.72 | 50.8 | 0.5 |
| 5.54 | X.S | 34.9 | 0.5 | 76.2 | 1.0 | 50.8 | 0.68 | |||
| 65 | 21/2” | 73.0 | 5.16 | STD | 44.4 | 0.73 | 95.2 | 1.46 | 63.5 | 0.95 |
| 7.01 | X.S | 44.4 | 0.91 | 95.2 | 1.82 | 63.5 | 1.27 | |||
| 80 | 3” | 88.9 | 5.49 | STD | 50.8 | 1.1 | 114.3 | 2.18 | 76.2 | 1.45 |
| 7.62 | X.S | 50.8 | 1.45 | 114.3 | 2.86 | 76.2 | 1.95 | |||
| 100 | 4” | 114.3 | 6.02 | STD | 63.5 | 2.1 | 152.4 | 4.2 | 101.6 | 2.8 |
| 8.56 | X.S | 63.5 | 2.9 | 152.4 | 5.7 | 101.6 | 3.9 | |||
| 125 | 5” | 141.3 | 6.65 | STD | 79.4 | 3.4 | 190.0 | 6.8 | 127.0 | 4.8 |
| 9.5 | X.S | 79.4 | 5.0 | 190.0 | 10.0 | 127.0 | 6.5 | |||
| 150 | 6” | 168.3 | 7.11 | STD | 95.2 | 5.1 | 229.0 | 10.1 | 152.4 | 6.8 |
| 10.97 | X.S | 95.2 | 7.7 | 229.0 | 15.3 | 152.4 | 10.2 | |||
| 200 | 8” | 219.1 | 8.18 | STD | 127.0 | 10.2 | 305.0 | 20.4 | 203.0 | 13.6 |
| 12.7 | X.S | 127.0 | 15.5 | 305.0 | 30.9 | 203.0 | 20.9 | |||
| 250 | 10” | 273.9 | 9.27 | STD | 159.0 | 18.1 | 381.0 | 36.1 | 254.0 | 24.1 |
| 12.7 | X.S | 159.0 | 24.4 | 381.0 | 48.8 | 254.0 | 32.5 | |||
| 300 | 12” | 323.9 | 9.52 | STD | 190.0 | 26.6 | 457.0 | 53.1 | 305.0 | 35.4 |
| 12.7 | X.S | 190.0 | 35.0 | 457.0 | 70.0 | 305.0 | 46.7 | |||
| 350 | 14” | 355.6 | 9.52 | STD | 222.0 | 34.1 | 533.0 | 68.1 | 356.0 | 45.4 |
| 12.7 | X.S | 222.0 | 45.0 | 533.0 | 90.0 | 356.0 | 60.0 | |||
| 400 | 16” | 406.4 | 9.52 | STD | 254.0 | 45.0 | 610.0 | 89.3 | 406.0 | 59.5 |
| 12.7 | X.S | 254.0 | 59.0 | 610.0 | 118.0 | 406.0 | 78.7 | |||
| 450 | 18” | 457.0 | 9.52 | STD | 286.0 | 56.5 | 686.0 | 113.0 | 457.0 | 75.6 |
| 12.7 | X.S | 286.0 | 75.0 | 686.0 | 150.0 | 457.0 | 100.0 | |||
| 500 | 20” | 508.0 | 9.52 | STD | 318.0 | 85.0 | 762.0 | 140.0 | 508.0 | 93.5 |
| 12.7 | X.S | 318.0 | 112.5 | 762.0 | 186.0 | 508.0 | 124.0 | |||
| 600 | 24” | 610.00 | 9.52 | STD | 381.0 | 101.5 | 914.0 | 203.0 | 610.0 | 135.0 |
| 12.7 | X.S | 381.0 | 134.5 | 914.0 | 269.0 | 610.0 | 179.0 | |||
Manufacturing Process of Super Duplex S32750 Buttweld Fitting
The manufacturing process of Super Duplex S32750 buttweld fittings begins with selecting certified raw material that meets ASTM A815 S32750 standards. Band saws or CNC machines are used to cut the material into the necessary sizes while keeping strict tolerances. Depending on the size and type of fitting, the cut pieces are then heated and shaped using either hot forming or cold forming techniques. Fittings are solution-annealed at approximately 1100°C after forming, and then quickly quenched with water to regain their mechanical strength and resistance to corrosion.
Once cooled, the surface is cleaned using pickling or shot blasting to remove scale and improve finish. To make sure there are no cracks or flaws, each fitting is then subjected to dimension checks, a 100% visual inspection and non destructive testing such as Ultrasonic Testing (UT) or Dye Penetrant Testing (DPT). Before shipping, we also use PMI, hardness, and hydro tests to confirm the material’s characteristics.
Pipe
Cutting
Forming
Sizing
Heat Treatment
Pickling
Beveling
Polishing
Sand Blasting
Elbow
Inspection
Analytic
Marking
Packing & Shipping
Industrial Applications for S32750 Super Duplex Buttweld Fittings
S32750 Duplex Buttweld Fittings are widely used in industries that demand resistance to corrosion, stress, and pressure. In offshore oil and gas platforms, they are installed in flowlines and risers. Chemical plants use them in corrosive process piping. Desalination systems apply them in seawater intake and discharge lines. In the pulp and paper industry, they serve in bleaching and chemical tanks. Marine systems use them for seawater transport. Super Duplex 2750 Buttweld Fittings ensure safe performance in demanding environments.
With its headquarters located in India, Midland Alloys Inc. exports Super Duplex Steel S32750 Buttweld Fittings to more than 35 nations. Due to the high demand for infrastructure and oil and gas, we continue to ship frequently to Gulf countries like the United Arab Emirates, Saudi Arabia, Qatar, Oman and Kuwait. With regular deliveries to Germany, the UK, France, and Italy, as well as increasing orders from the Asia-Pacific region which includes Singapore, Malaysia, Indonesia and South Korea, our export network is growing throughout Europe. With recurring exports to South Africa, Nigeria, Egypt, and Brazil, we’re also steadily expanding into Africa and Latin America. All fittings are packed using export-grade methods, backed by accurate customs paperwork and reliable port handling. We ensure fast delivery timelines, helping us build long-term ties with OEMs, EPC contractors, industrial distributors, and public-sector agencies worldwide.
Why Choose Midland Alloys Inc.
Midland Alloys Inc. is an ISO 9001 certified manufacturer focused on quality and compliance. We maintain a wide global export network with a strong record of on-time delivery. Our fittings are available in custom lengths, finishes, and coil forms to match specific project needs. Clients benefit from 24/7 customer support and responsive communication at every stage. We also ensure full material traceability, providing heat numbers and test certificates with every order.
FAQs –Super Duplex Steel S32750 Buttweld Fittings
It has higher chromium, molybdenum, and nitrogen, giving better corrosion and strength properties.
Common standards include ASTM A815, ASME B16.9, and NACE MR0175.
Yes, with proper welding techniques and temperature control.
