Duplex Steel UNS S32750 Welded Tubes

Manufacturer & Stockist of Super Duplex Steel UNS S32750 Welded Tubes

Kamal Steels is a leading Manufacturer and Stockist of Super Duplex Steel UNS S32750 Welded Tubes, supplying high-performance tubing solutions for offshore oil & gas, petrochemical, marine, desalination, chemical processing, pulp & paper and power generation industries. Manufactured from Super Duplex Stainless Steel UNS S32750 (WNR 1.4410), our welded tubes are produced in accordance with ASTM A789, ASTM A790, ASTM A928, and ASME SA789 standards, ensuring exceptional dimensional accuracy, superior mechanical strength and outstanding resistance to highly corrosive environments. Super Duplex UNS S32750 contains higher levels of chromium, molybdenum and nitrogen than standard duplex grades, providing outstanding resistance to pitting, crevice corrosion, chloride stress corrosion cracking and seawater corrosion.

Our Super Duplex Steel UNS S32750 Welded Tubes are manufactured using premium-quality super duplex stainless steel coils with advanced automatic welding technology, precision forming, solution annealing, pickling and finishing processes to produce tubes with excellent weld integrity, smooth surface finishes and long-term durability. These welded tubes are extensively used in offshore platforms, subsea pipelines, heat exchangers, condensers, pressure vessels, desalination plants, seawater handling systems, chemical processing equipment and critical process piping applications where maximum corrosion resistance and high mechanical strength are required.

At Kamal Steels, we maintain a comprehensive inventory of ASTM A789 Super Duplex Steel UNS S32750 Welded Tubes in various outside diameters, wall thicknesses, schedules, and custom lengths to meet urgent domestic and international project requirements. Every tube undergoes stringent quality inspections, including Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Eddy Current Testing, Ultrasonic Testing, Weld Integrity Testing, and Visual Inspection before dispatch. With certified quality, competitive pricing, export-standard packaging, and prompt worldwide delivery, Kamal Steels has established itself as a trusted manufacturer and supplier of Super Duplex Steel UNS S32750 Welded Tubes for the world's most demanding industrial applications.

Super Duplex Steel UNS S32750 Welded Tubes

Why Choose Super Duplex Steel UNS S32750 Welded Tubes?

Super Duplex Steel UNS S32750 Welded Tubes are designed for the most demanding industrial environments where exceptional corrosion resistance, superior mechanical strength, and long-term reliability are essential. Manufactured with a balanced austenitic-ferritic microstructure and higher chromium, molybdenum, and nitrogen content, these welded tubes provide outstanding resistance to pitting, crevice corrosion, chloride stress corrosion cracking, erosion, and seawater corrosion while maintaining excellent toughness and durability.

One of the major advantages of Super Duplex Steel UNS S32750 Welded Tubes is their outstanding weldability, excellent fatigue strength, high-pressure capability, and superior performance in highly aggressive chloride-containing environments. These tubes are extensively used in offshore oil & gas platforms, subsea pipelines, marine engineering, desalination plants, chemical processing facilities, heat exchangers, pressure vessels, and power generation industries where maximum corrosion resistance and structural integrity are critical.

At Kamal Steels, we manufacture and supply premium-quality ASTM A789 Super Duplex Steel UNS S32750 Welded Tubes produced according to international quality standards. Every tube undergoes comprehensive quality inspections, including Mechanical Testing, Chemical Analysis, Positive Material Identification (PMI), Hydrostatic Testing, Eddy Current Testing, Ultrasonic Testing, Weld Integrity Testing, and Dimensional Inspection to ensure exceptional product quality, reliability, and complete customer satisfaction.

Features & Benefits of Super Duplex Steel UNS S32750 Welded Tubes

  • Exceptional resistance to pitting and crevice corrosion.
  • Outstanding resistance to chloride stress corrosion cracking.
  • Superior resistance to seawater and marine environments.
  • Very high mechanical strength and pressure resistance.
  • Excellent weldability and fabrication characteristics.
  • Outstanding fatigue strength and impact toughness.
  • Excellent performance in aggressive chemical processing environments.
  • Long service life with reduced maintenance costs.
  • Available in welded and custom dimensions.
  • Supplied with complete material traceability and EN 10204 3.1 certification.
  • Cost-effective solution for critical industrial applications.
  • Ideal for offshore, marine, petrochemical, desalination, and power generation industries.

Super Duplex Steel UNS S32750 Welded Tube Specifications

Kamal Steels manufactures and supplies Super Duplex Steel UNS S32750 Welded Tubes in accordance with internationally recognized ASTM and ASME standards. Manufactured from premium-quality Super Duplex Stainless Steel UNS S32750 (WNR 1.4410), these welded tubes offer exceptional mechanical strength, outstanding corrosion resistance, superior weldability, and excellent performance in highly aggressive chloride-containing and seawater environments. Our Super Duplex Steel UNS S32750 Welded Tubes are available in various outside diameters, wall thicknesses, schedules, finishes, and custom lengths to meet the requirements of offshore oil & gas, marine engineering, desalination, petrochemical, chemical processing, and power generation industries.

Product Super Duplex Steel UNS S32750 Welded Tubes
Material Grade Super Duplex Stainless Steel UNS S32750 (WNR 1.4410)
Specifications ASTM A789, ASTM A790, ASTM A928, ASME SA789, ASME SA790
Tube Type Welded
Outside Diameter 6.35 mm to 219.10 mm (1/4" NB to 8" NB)
Wall Thickness 0.5 mm to 12.7 mm (SCH 5S to SCH XXS)
Length Single Random, Double Random, 6 Meter & Custom Cut Lengths
Surface Finish Annealed, Pickled, Bright Annealed (BA), Polished
End Finish Plain End, Beveled End, Threaded
Certification EN 10204 3.1 / 3.2 Mill Test Certificate (MTC)

Chemical Composition of Super Duplex Steel UNS S32750

Element Composition (%)
Chromium (Cr)24.00 – 26.00
Nickel (Ni)6.00 – 8.00
Molybdenum (Mo)3.00 – 5.00
Nitrogen (N)0.24 – 0.32
Manganese (Mn)1.20 Max
Silicon (Si)0.80 Max
Carbon (C)0.03 Max
Phosphorus (P)0.035 Max
Sulfur (S)0.020 Max
Iron (Fe)Balance

Mechanical Properties of Super Duplex Steel UNS S32750 Welded Tubes

Property Value
Tensile Strength 800 MPa Minimum
Yield Strength 550 MPa Minimum
Elongation 15% Minimum
Hardness 310 HB Max
Density 7.80 g/cm³

Equivalent Grades of Super Duplex Steel UNS S32750

Standard Equivalent Grade
UNS S32750
Werkstoff No. 1.4410
EN X2CrNiMoN25-7-4
DIN 1.4410
AFNOR Z3 CN 25.06 Az

Applications of Super Duplex Steel UNS S32750 Welded Tubes

Super Duplex Steel UNS S32750 Welded Tubes are extensively used in industries operating under extremely corrosive, high-pressure, and chloride-rich environments. Their exceptional combination of very high mechanical strength, outstanding resistance to pitting, crevice corrosion, chloride stress corrosion cracking, erosion, and seawater corrosion makes them one of the most reliable tubing solutions for the most demanding industrial applications. These welded tubes provide superior durability, reduced maintenance costs, and long service life in severe operating conditions.

  • Offshore Oil & Gas Platforms
  • Subsea Pipeline Systems
  • Marine & Shipbuilding Industries
  • Seawater Handling Systems
  • Desalination Plants
  • Chemical Processing Plants
  • Petrochemical Refineries
  • Heat Exchangers & Condensers
  • Pressure Vessels & Process Equipment
  • Power Generation Facilities
  • Pulp & Paper Industries
  • General Corrosion-Resistant Industrial Applications

Inspection & Testing of Super Duplex Steel UNS S32750 Welded Tubes

At Kamal Steels, every Super Duplex Steel UNS S32750 Welded Tube undergoes comprehensive inspection and testing to ensure compliance with ASTM, ASME, and customer specifications. Each tube is carefully inspected for chemical composition, dimensional accuracy, mechanical properties, weld integrity, and overall product quality before dispatch.

  • Positive Material Identification (PMI)
  • Chemical Composition Analysis
  • Mechanical Property Testing
  • Hydrostatic Testing
  • Eddy Current Testing (ECT)
  • Ultrasonic Testing (UT)
  • Weld Integrity Testing
  • Dimensional Inspection
  • Surface Finish Inspection
  • Visual Inspection
  • Third-Party Inspection Available on Request

Packaging, Marking & Documentation

Kamal Steels follows international export packaging standards to ensure that Super Duplex Steel UNS S32750 Welded Tubes reach customers safely without damage during transportation and storage. Tubes are protected with plastic end caps, securely bundled, wrapped with protective materials, and packed in fumigated wooden boxes, export-quality crates, or pallets to prevent moisture, scratches, dents, and transit damage.

Each tube is permanently marked with the material grade, specification, size, schedule, heat number, manufacturer's identification, and batch details for complete material traceability. Every shipment is supplied with EN 10204 3.1/3.2 Mill Test Certificates, inspection reports, packing lists, commercial invoices, certificates of compliance, and third-party inspection certificates whenever requested, ensuring complete documentation for domestic and international industrial projects.

Why Choose Kamal Steels for Super Duplex Steel UNS S32750 Welded Tubes?

Kamal Steels is a trusted manufacturer, supplier, stockist, and exporter of Super Duplex Steel UNS S32750 Welded Tubes, supplying premium-quality super duplex stainless steel tubing solutions for offshore oil & gas, marine engineering, petrochemical, desalination, chemical processing, and power generation industries. Manufactured according to ASTM and ASME standards, our welded tubes provide exceptional mechanical strength, outstanding corrosion resistance, excellent weld integrity, and dependable long-term performance in the harshest industrial environments.

We maintain a comprehensive inventory of ASTM A789 Super Duplex Steel UNS S32750 Welded Tubes in various outside diameters, wall thicknesses, schedules, surface finishes, and custom lengths to meet urgent domestic and international project requirements. Every tube undergoes comprehensive quality inspections, including Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Eddy Current Testing, Ultrasonic Testing, Weld Integrity Testing, Dimensional Inspection, and Visual Inspection to ensure complete compliance with international quality standards and customer specifications.

With decades of manufacturing expertise, ready stock availability, competitive pricing, certified quality, export-standard packaging, and a strong global supply network, Kamal Steels has become the preferred manufacturer and supplier of Super Duplex Steel UNS S32750 Welded Tubes across international markets. Our commitment to quality, technical support, prompt delivery, and complete documentation enables us to provide dependable super duplex stainless steel tubing solutions for the world's most demanding industrial applications.

Why Industries Trust Kamal Steels

  • Leading manufacturer, supplier, stockist, and exporter of Super Duplex Steel UNS S32750 Welded Tubes.
  • Large ready stock for immediate domestic and international supply.
  • Manufactured according to ASTM A789, ASTM A790, ASTM A928, ASME SA789, and ASME SA790 standards.
  • Precision welded tubes with excellent dimensional accuracy and weld quality.
  • Comprehensive quality inspection before every shipment.
  • EN 10204 3.1/3.2 Mill Test Certificates with complete material traceability.
  • Competitive pricing with consistent product availability.
  • Export-standard packaging for safe worldwide transportation.
  • Technical support for offshore, marine, desalination, and chemical processing applications.
  • Prompt worldwide delivery with complete export documentation.

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.