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Girgaon, Mumbai - 400004
Super Duplex Steel UNS S32750 Welded Tubes Manufacturer in India
What Are Super Duplex Steel UNS S32750 Welded Tubes?
Super Duplex Steel UNS S32750 Welded Tubes are tubular products manufactured from a super duplex stainless steel grade with a balanced austenitic and ferritic microstructure. UNS S32750, commonly known as Super Duplex 2507, offers a combination of very high mechanical strength, excellent corrosion resistance, good toughness and superior resistance to chloride-containing environments.
Super Duplex Steel UNS S32750 Welded Tubes are known for their excellent resistance to pitting and crevice corrosion, chloride-induced stress corrosion cracking, high strength-to-weight ratio and reliable performance in severe marine and chemical environments. These properties make them suitable for demanding applications where conventional stainless steel and standard duplex grades may not provide the required performance.
These welded tubes are used in offshore oil and gas equipment, marine systems, desalination plants, chemical processing equipment, petrochemical plants, heat exchangers and wastewater treatment systems. Tube dimensions, wall thickness, finish, length and testing requirements are selected according to the application and applicable material specifications.
Kamal Steels is a reliable Super Duplex Steel UNS S32750 Welded Tubes Manufacturer and Stockist in India, supplying welded tubes in different sizes, wall thicknesses, lengths and finishes according to customer and project requirements. We also cater to international requirements with suitable export packaging, MTC and documentation.
Table of Contents
- Super Duplex Steel UNS S32750 Welded Tube Specifications
- Super Duplex Steel UNS S32750 Welded Tube Size Chart
- Super Duplex Steel UNS S32750 Welded Tube Weight Chart
- Super Duplex Steel UNS S32750 Welded Tube Standards
- Super Duplex Steel UNS S32750 Welded Tube Features
- Super Duplex Steel UNS S32750 Chemical Composition
- Super Duplex Steel UNS S32750 Mechanical Properties
- Super Duplex Steel UNS S32750 Equivalent Grades
- Super Duplex Steel UNS S32750 vs UNS S32205 Welded Tubes
- Super Duplex Steel UNS S32750 Welded Tube Applications
- Industries Using UNS S32750 Welded Tubes
- Frequently Asked Questions
Super Duplex Steel UNS S32750 Welded Tube Specifications
Super Duplex Steel UNS S32750 Welded Tubes are supplied according to applicable ASTM, ASME and international specifications. They are available in different outside diameters, wall thicknesses, schedules, lengths and finishes according to project requirements.
| Specification | UNS S32750 Welded Tubes |
|---|---|
| Material | Super Duplex Stainless Steel |
| Grade | UNS S32750 |
| Common Name | Super Duplex 2507 |
| Tube Type | Welded |
| ASTM Standard | ASTM A789 |
| ASME Standard | ASME SA789 |
| Outside Diameter | As per requirement |
| Wall Thickness | As per requirement |
| Schedule | As required |
| Length | Random, Fixed or Customized |
| Finish | Pickled, Polished or As required |
Super Duplex Steel UNS S32750 Welded Tube Size Chart
Super Duplex Steel UNS S32750 Welded Tubes are available in various outside diameters and wall thicknesses for process, marine, offshore and chemical applications. Custom sizes can also be supplied according to customer drawings and project requirements.
| Tube Size | Outside Diameter (mm) | Wall Thickness | Length |
|---|---|---|---|
| 1/2" | 12.70 | As required | As required |
| 3/4" | 19.05 | As required | As required |
| 1" | 25.40 | As required | As required |
| 1-1/2" | 38.10 | As required | As required |
| 2" | 50.80 | As required | As required |
| 3" | 76.20 | As required | As required |
| 4" | 101.60 | As required | As required |
| 6" | 152.40 | As required | As required |
| 8" | 203.20 | As required | As required |
Super Duplex Steel UNS S32750 Welded Tube Weight Chart
The weight of Super Duplex Steel UNS S32750 Welded Tubes depends on outside diameter, wall thickness and length. The values below are approximate theoretical references; actual weight may vary according to dimensions and manufacturing tolerances.
| Outside Diameter (mm) | Wall Thickness (mm) | Inside Diameter (mm) | Approx. Weight (kg/m) |
|---|---|---|---|
| 12.70 | 1.00 | 10.70 | 0.35 |
| 19.05 | 1.50 | 16.05 | 0.83 |
| 25.40 | 2.00 | 21.40 | 1.52 |
| 31.75 | 2.50 | 26.75 | 2.39 |
| 38.10 | 3.00 | 32.10 | 3.36 |
| 50.80 | 3.00 | 44.80 | 4.66 |
| 63.50 | 3.00 | 57.50 | 5.96 |
| 76.20 | 4.00 | 68.20 | 9.52 |
| 101.60 | 5.00 | 91.60 | 15.48 |
Note: Weight values are approximate theoretical references. Final weight should be verified against actual dimensions and material test documentation.
Super Duplex Steel UNS S32750 Welded Tube Standards
Super Duplex Steel UNS S32750 Welded Tubes can be supplied according to applicable ASTM, ASME and other international standards depending on product dimensions, application and customer requirements.
| Standard / Designation | Details |
|---|---|
| UNS | S32750 |
| Common Name | Super Duplex 2507 |
| ASTM | ASTM A789 |
| ASME | ASME SA789 |
| Product Form | Welded Tube |
Super Duplex Steel UNS S32750 Welded Tube Features
UNS S32750 is selected for applications requiring a combination of very high strength and excellent corrosion resistance, particularly in chloride-containing and marine environments.
- Very high mechanical strength
- Excellent resistance to pitting corrosion
- Excellent resistance to crevice corrosion
- Excellent resistance to chloride-induced stress corrosion cracking
- High strength-to-weight ratio
- Good toughness and durability
- Excellent resistance in seawater environments
- Good resistance to general corrosion
- Suitable for severe offshore and chemical applications
- Reliable performance under demanding operating conditions
Super Duplex Steel UNS S32750 Chemical Composition
The chemical composition of UNS S32750 includes controlled amounts of chromium, nickel, molybdenum and nitrogen. This alloying balance contributes to its high strength and enhanced resistance to localized and chloride-related corrosion.
| Element | Composition (%) |
|---|---|
| Chromium | 24.0 - 26.0 |
| Nickel | 6.0 - 8.0 |
| Molybdenum | 3.0 - 5.0 |
| Nitrogen | 0.24 - 0.32 |
| Carbon | 0.030 max. |
| Manganese | 1.20 max. |
| Silicon | 0.80 max. |
| Phosphorus | 0.035 max. |
| Sulfur | 0.020 max. |
| Copper | 0.50 max. |
| Iron | Balance |
Super Duplex Steel UNS S32750 Mechanical Properties
UNS S32750 provides very high tensile and yield strength with good ductility and toughness. Actual mechanical properties depend on product condition, dimensions, heat treatment and the applicable material specification.
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 795 MPa min. |
| Yield Strength | 550 MPa min. |
| Elongation | 15% min. |
| Density | Approx. 7.8 g/cm³ |
Note: Mechanical properties may vary according to product dimensions and applicable specifications. Certified material test reports should be used for final verification.
Super Duplex Steel UNS S32750 Equivalent Grades
| Designation | Equivalent / Related Grade |
|---|---|
| UNS | S32750 |
| Common Name | Super Duplex 2507 |
| EN Material Number | 1.4410 |
| EN Grade | X2CrNiMoN25-7-4 |
Super Duplex Steel UNS S32750 vs UNS S32205 Welded Tubes
UNS S32750 is a super duplex stainless steel grade, while UNS S32205 is a standard duplex stainless steel grade commonly known as Duplex 2205. UNS S32750 contains higher levels of chromium, molybdenum and nitrogen, providing enhanced resistance to localized corrosion and higher mechanical strength for more severe service environments.
| Property | UNS S32750 | UNS S32205 |
|---|---|---|
| Material Type | Super Duplex Stainless Steel | Duplex Stainless Steel |
| Common Name | Super Duplex 2507 | Duplex 2205 |
| Corrosion Resistance | Very High | Excellent |
| Strength | Very High | High |
| Typical Application | Severe chloride and offshore environments | General demanding duplex applications |
Super Duplex Steel UNS S32750 Welded Tube Applications
Super Duplex Steel UNS S32750 Welded Tubes are used where high mechanical strength and superior resistance to corrosion are required, particularly in severe chloride, marine and offshore environments.
Offshore Oil & Gas
Used in offshore process equipment, tubular systems and components exposed to seawater and corrosive operating conditions.
Marine Systems
Used in marine equipment and seawater systems requiring excellent resistance to chloride-induced corrosion.
Desalination Plants
Used in desalination and water-treatment equipment exposed to high-chloride environments.
Chemical Processing
Used in chemical processing equipment requiring high strength and resistance to aggressive environments.
Heat Exchangers
Used in heat-transfer equipment operating in demanding corrosive environments.
Petrochemical Equipment
Used in process equipment and tubular systems requiring high strength and corrosion resistance.
Industries Using Super Duplex Steel UNS S32750 Welded Tubes
Kamal Steels supplies Super Duplex Steel UNS S32750 Welded Tubes to industries requiring high-strength and highly corrosion-resistant tubular products for demanding operating environments.
Oil & Gas Industry
Used in offshore platforms, subsea equipment and process systems exposed to severe corrosive conditions.
Marine Industry
Used in seawater systems, marine equipment and offshore applications requiring high corrosion resistance.
Chemical Industry
Used in chemical processing systems exposed to aggressive chemicals and chloride-containing environments.
Water Treatment Industry
Used in desalination, seawater treatment and wastewater processing systems.
Power Generation Industry
Used in selected cooling and power-generation systems requiring corrosion-resistant tubular products.
Petrochemical Industry
Used in process equipment and piping systems operating under demanding corrosive conditions.
Frequently Asked Questions
Super Duplex Steel UNS S32750 Welded Tubes are high-performance stainless steel tubes manufactured using advanced welding processes. They provide exceptional corrosion resistance, very high mechanical strength, and outstanding performance in highly aggressive environments.
Our Super Duplex Steel UNS S32750 Welded Tubes are manufactured according to ASTM A789, ASTM A790, ASTM A928, ASME SA789, and ASME SA790 standards.
These welded tubes offer outstanding resistance to pitting, crevice corrosion, chloride stress corrosion cracking, seawater corrosion, superior mechanical strength, excellent weldability, and extended service life.
They are widely used in offshore oil & gas platforms, subsea pipelines, marine engineering, desalination plants, chemical processing facilities, heat exchangers, pressure vessels, and power generation industries.
UNS S32750 contains higher levels of chromium, molybdenum, and nitrogen than standard duplex grades, providing significantly better corrosion resistance, higher strength, and improved performance in aggressive chloride-rich environments.
Each tube undergoes PMI Testing, Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Weld Integrity Testing, Dimensional Inspection, and Visual Inspection.
Yes. Super Duplex Steel UNS S32750 offers exceptional resistance to seawater corrosion, chloride-induced pitting, crevice corrosion, and stress corrosion cracking, making it ideal for offshore and marine applications.
Yes. Every shipment includes EN 10204 3.1/3.2 Mill Test Certificates, inspection reports, complete material traceability, and third-party inspection certificates upon request.
Yes. Kamal Steels exports Super Duplex Steel UNS S32750 Welded Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Super Duplex Steel UNS S32750 Welded Tubes with ready stock, certified quality, competitive pricing, stringent quality control, export-standard packaging, complete documentation, and dependable worldwide delivery for critical industrial applications.