Super Duplex Pipe Supplier UAE
Super duplex stainless steel pipe is a high-alloy stainless steel pipe containing a balanced ferritic-austenitic microstructure with increased chromium, molybdenum, and nitrogen content.
Compared with conventional austenitic stainless steels, super duplex grades provide:
- Higher yield strength
- Excellent chloride corrosion resistance
- High resistance to pitting and crevice corrosion
- Strong resistance to stress corrosion cracking
- Excellent mechanical performance
- Long service life in severe environments
The most commonly specified grades are UNS S32750 and UNS S32760
UNS S32750, commonly known as Duplex 2507, is one of the most widely used super duplex stainless steel grades.
It offers excellent resistance to:
- Chloride-induced corrosion
- Pitting
- Crevice corrosion
- Stress corrosion cracking
- Erosion-corrosion
- Offshore oil & gas
- Desalination
- Seawater systems
- Chemical processing
- Heat exchangers
- Marine piping
- Offshore oil & gas
- Desalination
- Seawater systems
- Chemical processing
- Heat exchangers
- Marine piping
Seamless super duplex pipes are manufactured without a longitudinal welded seam and are widely selected for high-pressure and critical-service applications.
They are commonly used for:
- High-pressure process piping
- Oil & gas applications
- Hydraulic systems
- Offshore piping
- Chemical processing
Welded super duplex pipes are available for larger diameters and applications where specific dimensions and cost efficiency are important.
Suitable for:
- Water systems
- Desalination
- Marine piping
- Process plants
- Large-diameter industrial pipelines
Our super duplex pipes can be supplied according to applicable international standards, including:
- ASTM A790
- ASTM A928
- ASME SA790
- ASME SA928
- ASTM A789, where applicable to product requirements
- ASME B36.19M
- ASTM A999
The applicable standard depends on the pipe manufacturing method, grade, dimensions, and project specification
Available schedules may include:
- SCH 10S
- SCH 20S
- SCH 40S
- SCH 80S
- SCH 100S
- SCH 120S
- SCH 160S
- Custom wall thickness
Availability depends on pipe size, grade, and manufacturing method
Super duplex pipes can be supplied with:
- Plain Ends (PE)
- Beveled Ends (BE)
- Threaded Ends
- Customized End Preparation
Butt-weld end preparation is commonly used for process piping and fabrication applications
Available finishes include:
- Pickled & Passivated
- Solution Annealed
- Bright Annealed
- Mill Finish
- Polished Finish, where applicable
Proper surface treatment is particularly important for maintaining corrosion resistance in super duplex stainless steel
| Specification | Details |
|---|---|
| Product | Super Duplex SS Pipe |
| Grades | UNS S32750 / S32760 |
| Common Grade | Super Duplex 2507 |
| Manufacturing | Seamless & Welded |
| Standards | ASTM A790 / A928 |
| Size | ½” and above |
| Schedule | SCH 10S–160S |
| Material | Super Duplex SS |
| End Type | Plain / Beveled / Customized |
| Finish | Pickled, Passivated, Mill Finish |
| Certification | EN 10204 3.1 / 3.2 |
| Element | Composition (%) |
|---|---|
| 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) | 24.0–26.0 |
| Nickel (Ni) | 6.0–8.0 |
| Molybdenum (Mo) | 3.0–5.0 |
| Nitrogen (N) | 0.24–0.32 |
Note: Values should always be verified against the applicable material standard and project specification.
Typical minimum mechanical requirements for UNS S32750 include:
| Property | Requirement |
|---|---|
| Tensile Strength | 800 MPa Min |
| Yield Strength | 550 MPa Min |
| Elongation | 15% Min |
Note: Actual requirements should be verified against the applicable ASTM/ASME specification and product form.
Super duplex pipes are widely used in offshore and onshore oil & gas facilities because of their excellent resistance to chloride-containing environments.
Applications include:
- Seawater injection
- Process piping
- Produced water systems
- Offshore piping
- Gas processing
- Desalination units
Super duplex is particularly suitable for marine environments where high chloride exposure and corrosion are major concerns.
Used in:
- Offshore platforms
- FPSOs
- Shipbuilding
- Subsea systems
- Seawater piping
OIS Middle East supplies super duplex pipes with appropriate quality inspection and documentation for industrial projects.
Depending on the applicable specification and project requirements, testing may include:
- Visual Inspection
- Dimensional Inspection
- Chemical Analysis
- Tensile Testing
- Hardness Testing
- Hydrostatic Testing
- Ultrasonic Testing
- Eddy Current Testing
- PMI
- Intergranular Corrosion Testing
- Ferrite Testing
- Third-Party Inspection
Available documentation may include:
- EN 10204 3.1 Mill Test Certificate
- EN 10204 3.2 Certificate
- Material Test Reports
- Heat Number Traceability
- PMI Reports
- Hydrostatic Test Reports
- NDT Reports
- Dimensional Inspection Reports
- Third-Party Inspection Reports
- UNS S32750 and S32760 availability
- Seamless and welded options
- Multiple sizes and schedules
- Competitive pricing
- Quality documentation
- Material traceability
- Technical support
- Project-specific sourcing
- UAE-wide delivery
- GCC and international export support
Our super duplex pipes are supplied for:
- Oil & Gas
- Offshore
- Marine
- Petrochemical
- Chemical Processing
- Desalination
- Water Treatment
- Power Generation
- Shipbuilding
- Industrial Manufacturing
- EPC Projects
OIS Middle East supplies super duplex stainless steel pipes throughout:
- Dubai
- Abu Dhabi
- Sharjah
- Ajman
- Ras Al Khaimah
- Fujairah
- Umm Al Quwain
We also support customers across Saudi Arabia, Oman, Qatar, Kuwait, Bahrain, Africa, and other international markets
A super duplex pipe is a high-alloy stainless steel pipe with a ferritic-austenitic microstructure that provides high strength and excellent resistance to corrosion, particularly in chloride-rich environments.
The most commonly specified grades include UNS S32750 (2507) and UNS S32760
Yes. OIS Middle East supplies seamless super duplex pipes in different sizes, wall thicknesses, and schedules.
ASTM A790 is a commonly specified standard for seamless and welded ferritic/austenitic stainless steel pipe, including applicable super duplex grades.
Yes. Super duplex stainless steel is widely used in seawater and marine applications because of its strong resistance to chloride-induced corrosio
Yes. EN 10204 3.1 and 3.2 documentation can be provided according to project requirements
Yes. We can source super duplex pipes according to the required grade, size, schedule, standard, quantity, testing requirements, and certification requirements
