Girgaon, Mumbai - 400004
Kamal Steels is a leading Manufacturer and Stockist of Duplex Steel UNS S32205 Seamless Tubes, supplying premium-quality seamless tubing solutions for offshore oil & gas, petrochemical, marine, chemical processing, desalination, pulp & paper, and power generation industries. Manufactured from Duplex Stainless Steel UNS S32205 (WNR 1.4462), our seamless tubes are produced in accordance with ASTM A789, ASTM A790, and ASME SA789 standards, ensuring exceptional dimensional accuracy, outstanding corrosion resistance and superior mechanical strength. Duplex UNS S32205 is an enhanced version of UNS S31803 with tighter control of chromium, molybdenum and nitrogen, providing improved pitting resistance and more consistent corrosion performance in aggressive chloride-containing environments.
Our Duplex Steel UNS S32205 Seamless Tubes are manufactured from premium-quality solid billets using advanced hot extrusion, rotary piercing, solution annealing, pickling, and precision finishing processes to produce seamless tubes without welded joints. This manufacturing method provides superior pressure-handling capability, excellent structural integrity, smooth surface finishes, and extended service life. These seamless tubes are widely used in heat exchangers, condensers, instrumentation systems, hydraulic lines, offshore platforms, seawater handling systems, pressure vessels, and critical process piping where maximum reliability and corrosion resistance are essential.
At Kamal Steels, we maintain a comprehensive inventory of ASTM A789 Duplex Steel UNS S32205 Seamless Tubes in various outside diameters, wall thicknesses, schedules, and custom lengths to meet urgent domestic and international project requirements. Every tube undergoes rigorous quality inspections, including Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing, Eddy Current Testing, Dimensional Inspection, 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 Duplex Steel UNS S32205 Seamless Tubes for critical industrial applications worldwide.

Duplex Steel UNS S32205 Seamless Tubes are widely recognized for their exceptional combination of high mechanical strength, superior corrosion resistance, and excellent durability in aggressive industrial environments. Manufactured with a balanced austenitic-ferritic microstructure and produced without welded joints, these seamless tubes provide outstanding structural integrity, superior pressure-handling capability, and excellent resistance to chloride stress corrosion cracking, pitting, crevice corrosion, and general corrosion.
One of the major advantages of Duplex Steel UNS S32205 Seamless Tubes is their ability to withstand high-pressure and high-temperature operating conditions while maintaining excellent toughness and long service life. Compared to UNS S31803, UNS S32205 offers tighter chemical composition control for improved corrosion resistance and more consistent mechanical properties. These seamless tubes are widely used in offshore oil & gas platforms, marine engineering, desalination systems, chemical processing plants, heat exchangers, pressure vessels, instrumentation tubing, and power generation facilities.
At Kamal Steels, we manufacture and supply premium-quality ASTM A789 Duplex Steel UNS S32205 Seamless Tubes produced according to international quality standards. Every seamless tube undergoes comprehensive quality inspections, including Mechanical Testing, Chemical Analysis, Positive Material Identification (PMI), Hydrostatic Testing, Ultrasonic Testing, Eddy Current Testing, Dimensional Inspection, and Visual Inspection to ensure exceptional product quality, reliability, and complete customer satisfaction.
Kamal Steels manufactures and supplies Duplex Steel UNS S32205 Seamless Tubes in accordance with internationally recognized ASTM and ASME standards. Manufactured from premium-quality Duplex Stainless Steel UNS S32205 (WNR 1.4462), these seamless tubes offer exceptional mechanical strength, superior corrosion resistance, outstanding dimensional accuracy, and excellent performance in high-pressure and highly corrosive environments. Our Duplex Steel UNS S32205 Seamless Tubes are available in various outside diameters, wall thicknesses, schedules, finishes, and custom lengths to meet the requirements of offshore oil & gas, marine engineering, petrochemical, chemical processing, desalination, and power generation industries.
| Product | Duplex Steel UNS S32205 Seamless Tubes |
|---|---|
| Material Grade | Duplex Stainless Steel UNS S32205 (WNR 1.4462) |
| Specifications | ASTM A789, ASTM A790, ASME SA789, ASME SA790 |
| Tube Type | Seamless |
| 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) |
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 22.00 – 23.00 |
| Nickel (Ni) | 4.50 – 6.50 |
| Molybdenum (Mo) | 3.00 – 3.50 |
| Nitrogen (N) | 0.14 – 0.20 |
| Manganese (Mn) | 2.00 Max |
| Silicon (Si) | 1.00 Max |
| Carbon (C) | 0.03 Max |
| Phosphorus (P) | 0.03 Max |
| Sulfur (S) | 0.02 Max |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 620 MPa Minimum |
| Yield Strength | 450 MPa Minimum |
| Elongation | 25% Minimum |
| Hardness | 290 HB Max |
| Density | 7.80 g/cm³ |
| Standard | Equivalent Grade |
|---|---|
| UNS | S32205 |
| Werkstoff No. | 1.4462 |
| EN | X2CrNiMoN22-5-3 |
| DIN | 1.4462 |
| AFNOR | Z3 CND22.05Az |
Duplex Steel UNS S32205 Seamless Tubes are extensively used in industries operating under highly corrosive, high-pressure, and chloride-rich environments. Their seamless construction, combined with excellent mechanical strength, superior resistance to pitting, crevice corrosion, chloride stress corrosion cracking, and outstanding durability, makes them one of the most reliable tubing solutions for critical industrial applications. These seamless tubes provide exceptional pressure-handling capability, long service life, and reduced maintenance costs even in the harshest operating conditions.
At Kamal Steels, every Duplex Steel UNS S32205 Seamless Tube undergoes comprehensive inspection and testing to ensure compliance with ASTM, ASME, and customer specifications. Each seamless tube is carefully inspected for chemical composition, dimensional accuracy, mechanical properties, surface quality, and overall product performance before dispatch.
Kamal Steels follows international export packaging standards to ensure that Duplex Steel UNS S32205 Seamless 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 seamless 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.
Kamal Steels is a trusted manufacturer, supplier, stockist, and exporter of Duplex Steel UNS S32205 Seamless Tubes, supplying premium-quality duplex stainless steel tubing solutions for offshore oil & gas, petrochemical, marine, desalination, chemical processing, power generation, and other critical industrial applications. Manufactured according to ASTM and ASME standards, our seamless tubes provide exceptional mechanical strength, outstanding corrosion resistance, superior dimensional accuracy, and dependable long-term performance in highly demanding service environments.
We maintain a comprehensive inventory of ASTM A789 Duplex Steel UNS S32205 Seamless Tubes in various outside diameters, wall thicknesses, schedules, surface finishes, and custom lengths to meet urgent domestic and international project requirements. Every seamless tube undergoes comprehensive quality inspections, including Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing, Eddy Current Testing, Dimensional Inspection, Surface 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 Duplex Steel UNS S32205 Seamless Tubes across international markets. Our commitment to quality, technical support, prompt delivery, and complete documentation enables us to provide dependable duplex stainless steel tubing solutions for the most demanding industrial applications worldwide.
Duplex Steel UNS S32205 Seamless Tubes are high-strength stainless steel tubes manufactured without welded joints. They provide excellent corrosion resistance, superior mechanical strength, and reliable performance in high-pressure and highly corrosive industrial applications.
Our Duplex Steel UNS S32205 Seamless Tubes are manufactured according to ASTM A789, ASTM A790, ASME SA789, and ASME SA790 standards.
These seamless tubes offer excellent mechanical strength, outstanding resistance to chloride stress corrosion cracking, pitting, crevice corrosion, superior pressure resistance, and long service life.
They are widely used in offshore oil & gas platforms, marine engineering, desalination plants, chemical processing facilities, petrochemical industries, heat exchangers, pressure vessels, and power generation systems.
UNS S32205 has tighter chemical composition limits with optimized chromium, molybdenum, and nitrogen content, providing improved corrosion resistance and more consistent mechanical properties compared to UNS S31803.
Each tube undergoes PMI Testing, Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Dimensional Inspection, Surface Inspection, and Visual Inspection.
Yes. Duplex Steel UNS S32205 provides excellent 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 Duplex Steel UNS S32205 Seamless Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Duplex Steel UNS S32205 Seamless Tubes with ready stock, certified quality, competitive pricing, stringent quality control, export-standard packaging, complete documentation, and dependable worldwide delivery for critical industrial applications.