ASTM A790 UNS S32750 Super Duplex Steel Pipe For Oil And Gas
ASTM Standard:ASTM A790 / ASME SA790
Pipe Type:Seamless & Welded Pipe
Heat Treatment:Solution Annealed & Water Quenched
Outside Diameter (OD):1/2" – 24" (Seamless); Up to 48" (Welded)
Wall Thickness:SCH 5S – SCH 160 / Custom Thickness
Length:SRL (Single Random Length), DRL (Double Random Length), Fixed Length
Standard Length:5.8 m / 6 m / 11.8 m / 12 m
Ends:Plain End (PE), Beveled End (BE), Threaded End
Surface Finish:Annealed & Pickled, Pickled & Passivated, Polished (Optional)
Inspection & Testing :Hydrostatic Test, UT, Eddy Current Test, PMI, Mechanical Testing
Certification:EN 10204 3.1 / 3.2 Mill Test Certificate Available
ASTM A790 UNS S32750 Super Duplex Steel Pipe supplier
If you are looking for high-strength, corrosion-resistant ASTM A790 UNS S32750 super duplex stainless steel tubing for offshore and onshore oil and gas projects, we can provide you with fully compliant heavy-duty super duplex stainless steel tubing solutions designed for acidic, high-pressure, and high-chloride environments.
ASME SA790 UNS S32750 stainless steel tubing has twice the mechanical strength of standard stainless steel, a PREN value ≥40, and exhibits excellent resistance to pitting/crevice corrosion, outstanding resistance to stress corrosion cracking, and a stable ferrite-austenite phase balance.
We supply UNS S32750 seamless steel tubing, UNS S32750 welded steel tubing, UNS S32750 EFW steel tubing, UNS S32750 round tubing, sleeves, and custom lengths conforming to ASTM A790, ASME SA790, and NACE MR0175 standards. Product specifications include outer diameters from 5mm to 1219mm and wall thicknesses from 0.3mm to 50mm. Key advantages include tight dimensional tolerances, full UT/ET/hydraulic testing, full MTC certification, long service life under H₂S/CO₂/Cl⁻ conditions, and suitability for subsea pipelines, risers, oil pipelines, and process equipment.
Specification
| Item | Specification / Available Range |
|---|---|
| Product Name | Super Duplex Stainless Steel Pipe |
| Material Grade | UNS S32750 |
| Trade Name | Super Duplex 2507 |
| EN/DIN Equivalent | 1.4410 / X2CrNiMoN25-7-4 |
| ASTM Standard | ASTM A790 / ASME SA790 |
| Pipe Type | Seamless & Welded Pipe |
| Material Family | Ferritic-Austenitic Duplex Stainless Steel |
| UNS Designation | S32750 |
| Common Grade | F53 |
| Manufacturing Process | Seamless, ERW, EFW, Welded |
| Heat Treatment | Solution Annealed & Water Quenched |
| Application | Corrosive service, chloride environments, high-pressure systems |
| Outside Diameter (OD) | 1/2" – 24" (Seamless); Up to 48" (Welded) |
| Wall Thickness | SCH 5S – SCH 160 / Custom Thickness |
| Length | SRL (Single Random Length), DRL (Double Random Length), Fixed Length |
| Standard Length | 5.8 m / 6 m / 11.8 m / 12 m |
| Ends | Plain End (PE), Beveled End (BE), Threaded End |
| Surface Finish | Annealed & Pickled, Pickled & Passivated, Polished (Optional) |
| Inspection & Testing | Hydrostatic Test, UT, Eddy Current Test, PMI, Mechanical Testing |
| Certification | EN 10204 3.1 / 3.2 Mill Test Certificate Available |
Heat Treatment Specifications for UNS S32750 Seamless Pipe
| Parameter | Requirement |
| UNS Designation | S32750 |
| Type | 2507 |
| Heat Treatment Temperature | 1880–2060°F (1025–1125°C) |
| Quenching Method | Rapid cooling in air or water |
Chemical Composition of UNS S32750
| Element | Requirement (%) |
| Carbon (C), max | 0.03 |
| Manganese (Mn), max | 1.2 |
| Phosphorus (P), max | 0.035 |
| Sulfur (S), max | 0.02 |
| Silicon (Si), max | 0.8 |
| Nickel (Ni) | 6.0–8.0 |
| Chromium (Cr) | 24.0–26.0 |
| Molybdenum (Mo) | 3.0–5.0 |
| Nitrogen (N) | 0.24–0.32 |
| Copper (Cu), max | 0.5 |
| Tungsten (W) | 0.50–1.00 |
Mechanical Properties of UNS S32750
| Property | Requirement |
| UNS Designation | S32750 |
| Type | 2507 |
| Tensile Strength, min | 116 ksi [800 MPa] |
| Yield Strength, min | 80 ksi [550 MPa] |
| Elongation, min | 15% |
| Hardness, max (HBW) | 300 |
| Hardness, max (HRC) | 32 |
Applications for ASTM A790 S32750 Super Duplex Steel Pipe
1.Oil & Gas: Underwater pipes, process systems, and equipment handling salty water and sour gases.
2.Chemical Processing: Transporting highly corrosive acids, salts, and chemicals in reactors, heat exchangers, and process piping systems.
3.Seawater Systems: Pipes for seawater cooling, firefighting, and desalination plants.
4.Power & FGD Industry:Flue Gas Desulfurization (FGD) systems in power plants to handle corrosive scrubber environments.
If you have any project needs, please feel free to contact us. We can provide professional guidance and solutions for your project!
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inspection
Each batch of steel pipes undergoes chemical composition analysis (OES), hardness testing, and microstructure verification. All finished steel pipes are then subjected to 100% hydrostatic testing, and non-destructive testing (NDT) methods such as ultrasonic and eddy current testing are used to detect internal or surface defects. We maintain detailed test certificates and factory reports (MTC EN 10204 3.1/3.2) for each heat number to ensure complete material traceability.
The Inner Wall
PMI Test
UNS S32750 Tube Factory
Our production process is ISO 9001 certified, and material testing results consistently comply with ASTM A790 / ASME SA790 standards. We utilize advanced cold drawing machines, fully automated heat treatment furnaces, and precision machining equipment.
high quality packaging
Our ASTM A790 UNS S32750 super duplex stainless steel pipes are packaged in strict export-grade protective packaging to ensure zero surface damage during international transport and full traceability. Each pipe is equipped with impact-resistant plastic end caps, covered with a moisture-proof PE film and VCI rust-proof paper, and secured with reinforced steel straps.
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