Super Duplex Stainless Steel Pipe
At Stellanox Steel, we manufacture and supply Super Duplex Stainless Steel Pipes designed to withstand the most demanding environments. Combining extreme strength, superior corrosion resistance, and excellent durability, our Super Duplex pipes are ideal for critical applications in offshore, chemical, marine, power generation, and desalination industries.
Engineered to exceed performance expectations, Stellanox Steel’s Super Duplex pipes offer cost-effective, long-lasting solutions for aggressive conditions where conventional stainless steels cannot perform.
What are Super Duplex Stainless Steel Pipe?
Super Duplex Stainless Steel Pipes are tubular products made from super duplex alloys like UNS S32750 (2507) and S32760 (Zeron 100).
Their dual-phase ferritic-austenitic microstructure offers outstanding mechanical strength (up to twice that of standard austenitic stainless steels) and unmatched corrosion resistance — especially against pitting, crevice corrosion, and stress corrosion cracking in high-chloride and acidic environments.
These pipes are widely used for transporting corrosive fluids and gases at high pressures and temperatures in critical industries.
| Products |
|---|
|
Stainless Steel |
|
Carbon Steel |
|
Duplex Stainless Steel |
|
Super Duplex Stainless Steel |
|
Alloy Steel |
|
Titanium |
|
Hastelloy |
|
Inconel |
|
Monel |
|
Aluminium |
|
Copper |
|
Pure Nickel |
|
Flanges |
|
Forged Fittings |
|
Valves |
|
Fasteners |
Key Features of Super Duplex Stainless Steel Pipe
- Ultra-High Yield and Tensile Strength: Reduces wall thickness and overall weight.
- Exceptional Corrosion Resistance: Superior performance in chloride-rich, sour gas, and acidic environments.
- Excellent Resistance to Stress Corrosion Cracking: Even under high-stress and thermal cycling conditions.
- Good Weldability and Fabricability: Allows for reliable on-site installation.
- Superior Fatigue and Impact Resistance: Performs under cyclic and impact loads.
- Cost-Effective Long-Term Material: Lower lifecycle costs compared to high-end nickel alloys.
Super Duplex Stainless Steel Pipe Products
Super Duplex Stainless Steel Sheet
Super Duplex Stainless Steel Plate
Super Duplex Stainless Steel Pipe
Super Duplex Stainless Steel Tube
Super Duplex Stainless Steel Bar
Specification Chart –Super Duplex Stainless Steel Pipe
| Property | Details |
|---|---|
| Product | Super Duplex Stainless Steel Pipe |
| Common Grades | UNS S32750 (2507), UNS S32760 (Zeron 100) |
| Manufacturing Standards | ASTM A790 (Seamless & Welded), ASTM A928 (Welded SAW), EN 10216-5 |
| Pipe Types | Seamless (SMLS), Welded (ERW, LSAW, HFW, SSAW) |
| Size Range (OD) | 1/2” NB to 48” NB (21.3 mm to 1219 mm OD) |
| Wall Thickness | SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, SCH XXS |
| Length Options | 5–7 meters (SRL), 11–13 meters (DRL), Custom Lengths |
| Surface Finish Options | Pickled & Passivated, Polished, Annealed, Bead Blasted |
| End Types | Plain End (PE), Beveled End (BE), Threaded End (TE) |
| Testing and Certification | Hydrostatic Test, Ultrasonic Test, PMI, EN 10204 3.1/3.2 Certification, NACE MR0175/ISO 15156 |
Chemical Composition Chart –Super Duplex Stainless Steel Pipe
| Element | Symbol | Composition (%) |
|---|---|---|
| Carbon | C | ≤ 0.030 |
| Chromium | Cr | 24.0 – 26.0 |
| Nickel | Ni | 6.0 – 8.0 |
| Molybdenum | Mo | 3.0 – 5.0 |
| Nitrogen | N | 0.24 – 0.32 |
| Manganese | Mn | ≤ 1.2 |
| Silicon | Si | ≤ 0.8 |
| Phosphorus | P | ≤ 0.035 |
| Sulfur | S | ≤ 0.020 |
| Iron | Fe | Balance |
Mechanical Properties Chart –Super Duplex Stainless Steel Pipe
| Property | Value |
|---|---|
| Tensile Strength (MPa) | ≥ 795 |
| Yield Strength (0.2% Proof, MPa) | ≥ 550 |
| Elongation (%) | ≥ 15 |
| Hardness (Brinell HB) | ≤ 300 |
| Impact Energy (Charpy @ -46°C) | ≥ 45 Joules |
Equivalent Grades Chart – Super Duplex Stainless Steel Pipe
| Standard | Equivalent Grade |
|---|---|
| ASTM | A790 S32750 / S32760 |
| UNS | S32750 (2507), S32760 (Zeron 100) |
| EN | 1.4501, 1.4410 |
| DIN | X2CrNiMoCuWN25-7-4 |
| JIS | SUS 329J4L |
Super Duplex Stainless Steel Pipe Weight Chart (kg/m²)
| Size (inches) | OD (mm) | WT (mm) | Weight per Meter (kg) |
|---|---|---|---|
| 1" | 33.4 | 3.38 | 2.45 |
| 1.5" | 48.3 | 3.68 | 4.34 |
| 2" | 60.3 | 3.91 | 5.96 |
| 3" | 88.9 | 5.49 | 11.27 |
| 4" | 114.3 | 6.02 | 17.02 |
| 6" | 168.3 | 7.11 | 31.79 |
| 8" | 219.1 | 8.18 | 50.06 |
Applications of Super Duplex Stainless Steel Pipe in Various Industries
Stellanox Steel’s Carbon Steel products are valued for their strength, machinability, and cost-effectiveness across multiple sectors:
Oil And Gas Industry
Marine Industry
Building And Structural Steel
Power and Energy
Aerospace
Defence
Benefits of Super Duplex Stainless Steel Pipe
- Reduced Material Weight with Increased Strength: Lighter designs for heavy structures.
- Superior Corrosion and Erosion Resistance: Longer lifespan in harsh environments.
- High Toughness and Fatigue Resistance: Withstands cyclic and impact loading.
- Excellent Fabrication and Welding Capabilities: Easy field fabrication when using controlled procedures.
- Lower Total Lifecycle Costs: Savings in maintenance, downtime, and replacement.
- Eco-Friendly Material: Fully recyclable and energy-efficient in production.
Frequently Asked Questions
Explore our FAQs for insights on materials, customization, and delivery.
What is the difference between Super Duplex pipes and standard Duplex pipes?
Super Duplex pipes have higher chromium, molybdenum, and nitrogen contents, offering greater corrosion resistance and mechanical strength compared to standard duplex pipes.
Are Super Duplex pipes suitable for sour gas service?
Yes. Pipes compliant with NACE MR0175/ISO 15156 standards are suitable for sour service applications involving hydrogen sulfide (H₂S).
Can Super Duplex pipes be used at cryogenic temperatures?
Yes. They retain excellent impact toughness even at subzero temperatures.
What surface finishes are available for Super Duplex pipes?
We offer pickled & passivated, polished, bead blasted, and custom finishes depending on project needs
GET IN TOUCH
Our factory’s complete control ensures top-notch quality, prices, and service, reflecting our pride in what we do.
2025 Stellanox Steel |