High Quality Duplex/Super Duplex Round Bars & Rods

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Duplex Steel Round Bars Manufacturer & Exporter S31803 S32205 S32750 S32760

Duplex & Super Duplex Steel Round Bars Manufacturer & Exporter | Duplex S31803 / S32205 & Super Duplex S32750 / S32760

Ratnadeep Steel & Engg. Co. is a trusted manufacturer, exporter, and supplier of Duplex Steel and Super Duplex Steel Round Bars designed for high-strength and corrosion-critical applications. Duplex and super duplex round bars combine the best properties of austenitic and ferritic stainless steels, offering superior strength, excellent resistance to stress corrosion cracking, and outstanding durability in aggressive environments.

Duplex Steel S31803 / S32205 Round Bars provide high yield strength, excellent resistance to pitting and crevice corrosion, and superior performance in chloride-rich environments. These grades are widely used in offshore structures, heat exchangers, pressure vessels, desalination plants, and chemical processing equipment where both mechanical strength and corrosion resistance are essential.

Super Duplex Steel S32750 / S32760 Round Bars are premium alloys engineered for the most demanding service conditions. With enhanced chromium, molybdenum, and nitrogen content, super duplex round bars deliver exceptional resistance to seawater, sour gas, acids, and high-pressure environments. These grades are extensively used in oil & gas exploration, marine engineering, subsea pipelines, pumps, valves, and power generation applications.

Duplex Steel S31803 Round Bars
Duplex Steel S32205 Round Bars
Super Duplex Steel S32750 Round Bars
Super Duplex Steel S32760 Round Bars

Our duplex and super duplex steel round bars are manufactured and supplied in accordance with ASTM, ASME, EN, DIN, and ISO standards. We offer a wide range of diameters, lengths, surface finishes, and precision-cut sizes with complete mill test certificates (MTC), ensuring consistent quality and reliable performance for critical industrial applications.

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Our Range of Duplex & Super Duplex Steel Round Bars

Explore Duplex Steel S31803 / S32205 Round Bars

Duplex Steel S31803 / S32205
Round Bars

Explore Super Duplex Steel S32750 / S32760 Round Bars

Super Duplex Steel S32750 / S32760
Round Bars

Duplex Steel S31803 / S32205 Round Bar

Duplex stainless steel with austenitic + ferritic structure
Excellent strength compared to austenitic grades
Very good resistance to pitting and crevice corrosion
High resistance to stress corrosion cracking
Good weldability with proper procedures
Min tensile strength: ~620–750 MPa
High yield strength allows thinner sections
Used in oil & gas, marine, pressure vessels, heat exchangers
Cost-effective alternative to high-nickel alloys

Super Duplex Steel S32750 / S32760 Round Bar

Super duplex stainless steel with enhanced alloy content
Extremely high strength and superior corrosion resistance
Excellent resistance to chloride stress corrosion cracking
Outstanding pitting and crevice corrosion resistance (high PREN)
High resistance to erosion and abrasion
Min tensile strength: ~800–950 MPa
Excellent performance in seawater and harsh environments
Used in offshore platforms, desalination, chemical processing
Long service life in extreme operating conditions

The stainless steel round bars we supply undergo a comprehensive quality assurance process, including ultrasonic testing (UT), eddy current testing (ECT), and other essential non-destructive testing (NDT) methods, along with detailed chemical composition analysis and mechanical property evaluation. Each round bar is inspected at multiple stages of production to ensure freedom from surface and internal defects, dimensional accuracy, and consistent metallurgical quality. All materials are manufactured and tested in accordance with applicable ASTM, ASME, EN, DIN, and ISO standards, ensuring reliable performance and full acceptance in demanding industrial applications across domestic and international markets.

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Looking for high-quality Duplex Steel Grade S31803/S32205 & Super Duplex Steel Grade S32750/S32760 round bars & rods? Get in touch with us today.