Super Duplex Stainless Steel UNS S32750 Pipes Manufacturer in India
Super Duplex Stainless Steel UNS S32750 Pipes Manufacturer in India
Sachiya Steel International is a trusted Super Duplex Stainless Steel UNS S32750 Pipes Manufacturer in India, supplying industrial piping products for demanding operating conditions. Established in 2005 and headquartered in Mumbai, we bring over 20 years of experience in manufacturing, supplying and exporting steel pipes and tubes to customers in 85+ countries. Our ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 and applicable TÜV certifications reflect our commitment to quality, safety and industry standards.
S32750, also called 2507, carries about 25% chromium, 4% molybdenum and a high nitrogen level. That gives it a minimum yield strength of 550 MPa and pitting resistance well above the 2205 duplex family. It is the pipe engineers choose for seawater, high-chloride brine and sour process lines. Each length is made to ASTM A790 and ships with an EN 10204 3.1 certificate showing real test data.
What Are Super Duplex Stainless Steel UNS S32750 Pipes?
Super Duplex Stainless Steel UNS S32750 Pipes are steel pipes made from a super duplex stainless steel alloy that contains chromium, nickel, molybdenum and nitrogen. This combination gives the pipes high strength and excellent resistance to corrosion, especially in environments exposed to seawater, chlorides and harsh chemicals. Also known as Super Duplex 2507, UNS S32750 has a balanced ferritic-austenitic structure that supports reliable performance under demanding operating conditions.
These pipes are commonly used in oil and gas plants, offshore platforms, desalination units, chemical processing facilities and marine industries. They help transport fluids in systems where both strength and corrosion resistance are important. Their properties make them suitable for applications that require durable piping materials and dependable performance in harsh environments.
Super Duplex Stainless Steel UNS S32750 Pipes
Super duplex stainless steel UNS S32750 pipes for demanding applications in oil & gas, marine, offshore, chemical processing and desalination industries. Available in different sizes, wall thicknesses, and specifications to meet project requirements.
Types of Super Duplex Stainless Steel UNS S32750 Pipes
As a Super Duplex Stainless Steel UNS S32750 Pipes Manufacturer, we offer different pipe types to meet industrial requirements for strength, corrosion resistance and reliable performance. Our range includes various manufacturing processes, wall thicknesses and dimensions for offshore, marine, oil and gas, and chemical processing applications.
- Seamless Super Duplex Stainless Steel UNS S32750 Pipes: Manufactured without a welded seam, these pipes suit high-pressure systems and demanding offshore applications.
- Welded Super Duplex Stainless Steel UNS S32750 Pipes: Made by welding steel plates or strips, these pipes provide options for larger diameters and industrial piping systems.
- EFW Super Duplex Stainless Steel UNS S32750 Pipes: Suitable for large-diameter applications and available according to applicable manufacturing standards.
- Heavy-Wall Super Duplex Stainless Steel UNS S32750 Pipes: Designed for systems that require greater wall thickness, such as pressure headers and manifolds.
- Thin-Wall Super Duplex Stainless Steel UNS S32750 Pipes: Offer a lighter piping option where the design permits reduced wall thickness while meeting operating requirements.
- Cut-to-Length Super Duplex Stainless Steel UNS S32750 Pipes: Supplied in specified lengths with plain or beveled ends for easier installation.
- Fabricated Super Duplex Stainless Steel UNS S32750 Pipes: Produced to project-specific dimensions and designs for applications requiring non-standard configurations.
We supply these pipe types according to applicable standards, required dimensions and project specifications to support a wide range of industrial needs.
Types of Pipes & Tubes
Explore our range of industrial pipes and tubes, manufactured for different applications, materials, specifications and engineering requirements.
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Copper Nickel Alloy Pipe
→Get Certified Super Duplex Stainless Steel UNS S32750 Pipes at Competitive Factory Prices
Super Duplex Stainless Steel UNS S32750 Pipes Specifications
| Property | Detail |
|---|---|
| Grade | UNS S32750 (2507) |
| EN Number | 1.4410 (X2CrNiMoN25-7-4) |
| Standard | ASTM A790 / ASME SA790 |
| Manufacture | Seamless, welded, EFW |
| Size | ½" to 24" NB; custom sizes on request |
| Wall | Sch 5S to XXS, or to drawing |
| Condition | Solution annealed and quenched |
| Length | Single random, double random, cut length |
| Ends | Plain, beveled, threaded |
| Finish | Annealed and pickled |
| Hardness | 310 HBW / 32 HRC max |
| Testing | PMI, hydrostatic, ET or UT, flattening, ferrite check, A923 |
| Certificate | EN 10204 3.1; 3.2 on request |
Standards and Approvals for Super Duplex Stainless Steel UNS S32750 Pipes
ASTM A790 / ASME SA790 is the main standard, covering seamless and straight-seam welded pipe. Large fusion-welded pipe falls under ASTM A928. General rules for tolerances, marking and testing come from ASTM A999, and pipe dimensions follow ASME B36.19M. European projects can use EN 10216-5 for seamless and EN 10217-7 for welded pipe in 1.4410.
Offshore and sour-service jobs usually add their own layers. NORSOK requirements and NACE MR0175 / ISO 15156 set limits on hardness, ferrite and operating conditions. If your project calls for either, tell us at the enquiry stage so we can confirm what we can meet before you commit.
S32750 vs S32760 vs 2205: Choosing the Right Duplex Pipe
Three grades come up in nearly every duplex enquiry. S32750 and S32760 are both super duplex, and 2205 is the standard grade underneath them.
| Point | 2205 (S32205) | S32750 | S32760 |
|---|---|---|---|
| Chromium | 22.0 – 23.0% | 24.0 – 26.0% | 24.0 – 26.0% |
| Molybdenum | 3.0 – 3.5% | 3.0 – 5.0% | 3.0 – 4.0% |
| Nitrogen | 0.14 – 0.20% | 0.24 – 0.32% | 0.20 – 0.30% |
| Tungsten | None | None | 0.5 – 1.0% |
| Typical PREN | About 35 | About 42 | About 41 – 43 |
| Yield (min) | 450 MPa | 550 MPa | 550 MPa |
S32750 and S32760 perform very similarly. S32760 adds tungsten and copper, while S32750 gets more of its strength from nitrogen. Most specifications accept either, so ask your engineer whether the drawing really names one grade. Stepping up from 2205 pays off when chloride levels or temperature push 2205 near its limit. In milder chloride service, 2205 is the more economical pick.
Super Duplex Stainless Steel UNS S32750 Pipes Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 1.20 max |
| Silicon (Si) | 0.80 max |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.020 max |
| Chromium (Cr) | 24.00 – 26.00 |
| Nickel (Ni) | 6.00 – 8.00 |
| Molybdenum (Mo) | 3.00 – 5.00 |
| Nitrogen (N) | 0.24 – 0.32 |
| Copper (Cu) | 0.50 max |
| Iron (Fe) | Balance |
Limits per ASTM A790 for UNS S32750.
Mechanical and Physical Properties of Super Duplex Stainless Steel UNS S32750 Pipes
| Property | Requirement |
|---|---|
| Tensile Strength | 800 MPa (116 ksi) min |
| Yield Strength (0.2% offset) | 550 MPa (80 ksi) min |
| Elongation | 15% min |
| Hardness | 310 HBW / 32 HRC max |
| Density | approx. 7.80 g/cm³ |
| Elastic Modulus | approx. 200 GPa |
| Thermal Expansion (20–100 °C) | approx. 13.0 µm/m·°C |
| Thermal Conductivity (20 °C) | approx. 14 W/m·K |
| Magnetic Response | Magnetic, because of the ferrite phase |
The yield strength is about three times that of 316L. A pipe that holds the same pressure with a thinner wall saves weight and cuts support and handling costs, which matters on offshore and subsea jobs.
Corrosion Resistance and Temperature Limits of Super Duplex Stainless Steel UNS S32750 Pipes
In chloride, S32750 resists pitting far beyond 2205. In ASTM G48 testing, its critical pitting temperature is typically around 70–80 °C, compared with about 35 °C for 2205 and under 15 °C for 316L. It also stands up well to chloride stress corrosion cracking, even in warm seawater and sour brine.
The trade-off is temperature. Most designs keep super duplex below about 250 °C, and design codes list stress values only up to roughly 315 °C. Between about 300 and 525 °C, the ferrite phase slowly embrittles, and above about 600 °C, brittle sigma phase forms faster than in 2205. Toughness also falls at very low temperature, so confirm impact test requirements below −50 °C.
Because of these limits, S32750 is not the grade for hot steam or furnace service. For those jobs, P91, P92 or 347H are the right picks.
Buying Super Duplex Stainless Steel UNS S32750 Pipes from a Manufacturer and Supplier in India
Super duplex punishes sloppy production. If the anneal runs too cool or the quench is slow, brittle phases form, and the pipe can pass a visual check and still fail in service. That is why the source matters more than the price list.
As a Super Duplex Stainless Steel UNS S32750 Pipes Supplier in India that also makes the pipe, we keep solution annealing, quenching and testing under our own control. Buyers comparing Super Duplex Stainless Steel UNS S32750 Pipes Suppliers should ask for four items: the heat treatment record, hardness results, a ferrite count and positive material identification. We provide all four as standard. Matching A182 F53 flanges, A815 fittings and A240 plate can be quoted with the pipe.
Super Duplex Stainless Steel UNS S32750 Pipes Size and Weight Chart
Weight per metre = (OD − wall) × wall × 0.0245, with OD and wall in mm. This uses a density of 7.80 g/cm³. Treat the results as estimates, since wall tolerance moves the real weight.
OD and wall are in mm. Multiply the result by the pipe length to obtain the total weight.
| NPS | OD (mm) | Sch 10S (wall / kg/m) | Sch 40S (wall / kg/m) | Sch 80S (wall / kg/m) |
|---|---|---|---|---|
| 1¼" | 42.2 | 2.77 / 2.68 | 3.56 / 3.37 | 4.85 / 4.44 |
| 2½" | 73.0 | 3.05 / 5.23 | 5.16 / 8.58 | 7.01 / 11.33 |
| 3½" | 101.6 | 3.05 / 7.36 | 5.74 / 13.48 | 8.08 / 18.51 |
| 6" | 168.3 | 3.40 / 13.74 | 7.11 / 28.08 | 10.97 / 42.28 |
| 10" | 273.1 | 4.19 / 27.60 | 9.27 / 59.92 | 12.70 / 81.03 |
| 12" | 323.9 | 4.57 / 35.75 | 10.33 / 79.21 | 12.70 / 96.83 |
For other sizes and walls, we can send a full chart on request.
Super Duplex Stainless Steel UNS S32750 Pipes Common Materials
Super Duplex Stainless Steel UNS S32750 Pipes are available under different material designations used in industrial drawings, purchase orders and engineering specifications. Our product range follows applicable material standards, with related grades and components available to meet project requirements. As Super Duplex Stainless Steel UNS S32750 Pipes Suppliers, we provide products with material identification and documentation according to the agreed specifications.
Common Name: Super Duplex 2507, 25Cr Super Duplex
UNS Grade: S32750
Alternative Grade: S32760, subject to application requirements
EN / DIN Grade: 1.4410, X2CrNiMoN25-7-4
Forged Flange Grade: ASTM A182 F53
Pipe Fitting Grade: ASTM A815 WP-S32750
Plate Grade: ASTM A240 S32750
Bar Grade: ASTM A276 S32750
These material designations help identify the required grade for pipes, fittings, flanges, plates and bars used in industrial piping systems. Since S32750 and S32760 have different chemical composition requirements, we supply materials according to the specified grade and applicable standard. Material test certificates and inspection documentation can be provided as required by the order.
Super Duplex Stainless Steel UNS S32750 Pipes We Manufacture and Supply
We make super duplex pipe in seamless, welded and EFW forms, in light and heavy walls. Flanges, fittings and plate can ride on the same order, so one heat family covers the whole package and the certificates match.
Solution annealing, quenching, pickling, straightening, cutting and inspection are handled at our own plant, which lets us cut lengths and prepare ends to your spool drawings and keep every length traceable to its heat. As a Super Duplex Stainless Steel UNS S32750 Pipes Manufacturer, we pack for your route as well, from bundled lengths to crated export loads.
Super Duplex Stainless Steel UNS S32750 Pipes Applications
- Subsea and Offshore: Seawater injection, firewater and topside process lines.
- Oil and Gas: High-chloride produced water and sour-service piping.
- Desalination Plants: High-pressure reverse osmosis feed and brine lines.
- Chemical Processing: Lines handling hot chlorides and acidic streams.
- Heat Exchangers: Seawater-cooled exchanger piping where 2205 is too close to its limit.
- Pulp and Paper: Bleach plant and chloride-rich liquor lines.
- Flue Gas Scrubbers: Wet scrubber piping in power plant desulfurization.
- Marine Systems: Ballast water treatment and scrubber piping on vessels.
Why Choose Us as Your Super Duplex Stainless Steel UNS S32750 Pipes Manufacturer in India?
We offer Super Duplex Stainless Steel UNS S32750 Pipes in a wide range of sizes, outside diameters, schedules and wall thicknesses to meet different industrial requirements. With a monthly production and supply capacity of up to 100 tons, we handle bulk orders, standard dimensions and custom specifications based on project drawings. Our focus on material quality, dimensional accuracy and product documentation helps meet the requirements of demanding piping applications.
Since 2005, Sachiya Steel International has supplied industrial steel products to customers in 85+ countries, including markets across Asia, Europe, the Middle East, Africa and the Americas. Our ISO 9001:2015, ISO 14001:2015, ISO 45001:2018 and applicable TÜV certifications support our commitment to quality and safety. We also coordinate material testing, inspection, certification and export documentation according to order requirements, helping customers manage procurement for oil and gas, offshore, marine and chemical processing projects.
Countries We Export Super Duplex Stainless Steel UNS S32750 Pipes To
Sachiya Steel International supplies Super Duplex Stainless Steel UNS S32750 Pipes to customers across 85+ countries, supporting industrial projects in major international markets. As a Super Duplex Stainless Steel UNS S32750 Pipes Manufacturer, we serve oil and gas companies, offshore engineering projects, marine industries, chemical plants and petrochemical facilities with products suited to demanding operating conditions.
North America: USA, Canada, Mexico
Europe: Germany, United Kingdom, France, Italy, Netherlands, Spain, Poland
Middle East: UAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain
Asia-Pacific: Singapore, Malaysia, Indonesia, Australia, Japan, South Korea, Vietnam
Africa: South Africa, Nigeria, Egypt, Kenya, Morocco
South America: Brazil, Argentina, Chile, Peru
Our export services include suitable packaging, pipe-end protection, shipping coordination and export documentation, such as commercial invoices, packing lists and material test certificates, according to order requirements. We also coordinate third-party inspections when agreed upon. With a monthly production and supply capacity of up to 100 tons, we support standard orders, bulk quantities and project-specific requirements for customers worldwide.