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Based in Chennai, India, Kunj Sheets and Plates is a well-known manufacturer and supplier that specialises in providing high-quality Duplex Steel Circles to satisfy the various demands of industrial customers. Our Duplex Steel Circles are designed to function dependably in demanding environments and are renowned for their exceptional strength and superior resistance to corrosion. We serve industries like oil and gas, chemical processing, and marine by providing these circles in a range of sizes, thicknesses, and grades. Our reputation as a reliable partner for high-performance steel solutions stems from our strict quality control and adherence to international standards, which guarantee that every product offers the best possible performance, longevity, and value.
Around 22–25% chromium, 4.5–7% nickel, and 3–5% molybdenum are normally present in duplex steel circles, along with balanced levels of manganese and nitrogen. Austenitic and ferritic qualities are combined in this dual-phase microstructure. These circles have outstanding elongation (up to 25%), good yield strength (about 450 MPa), and high tensile strength (up to 620 MPa). They are perfect for extremely corrosive environments because they also offer remarkable resistance to stress corrosion cracking, pitting, and crevice corrosion. Even at high temperatures and pressures, duplex steel continues to perform exceptionally well mechanically.
| Standard | ASTM A240, ASME SA240 |
| Dimensions | ASTM, ASME and API |
| Standard | JIS, AISI, ASTM, GB, DIN, EN, etc. |
| Thickness | 1 Mm To 100 mm. |
| Diameter | Upto 2000 Mm. |
| Circle Diameter | 3″ DIA up to 38″ DIA 1500 lbs max. |
| Circles Form | Cold Rolled, Small Flat, Industrial, Proof Machined, Perforated, Forged Steel, Cnc Finish, Polished Unique, Hot Rolled Circle.. |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Kunj Sheets and Plates based in Chennai, India, is a leading supplier and stockist of high-quality metal products, including Sheets, Plates, Coils, Foils, Angles, Channels, Circles, and Slitting Coils, all offered with exceptional service and tailored to meet our customers specific requirements. With a focus on delivering superior products, we cater to a wide range of industries, providing reliable solutions for diverse applications. Our extensive inventory includes Known for our unique finishing techniques and commitment to quality. We are dedicated to ensuring customer satisfaction through dependable service and top-notch products.
Duplex Steel Circles offer numerous advantages, making them highly sought-after for industrial applications. They combine the best properties of austenitic and ferritic stainless steels, delivering superior strength and corrosion resistance, especially against stress corrosion cracking and pitting. Their high tensile and yield strength allow for thinner, lighter designs, reducing material costs. Duplex Steel Circles exhibit excellent weldability and machinability, making them versatile for various manufacturing needs. Additionally, their durability and resistance to extreme temperatures and harsh chemicals make them ideal for use in marine, oil & gas, and chemical processing industries.
Yes, we offer custom sizes for Duplex Steel Circle to meet specific project needs. Our team at Kunj Sheets and Plates is dedicated to providing tailored solutions for all your requirements. For more details, contact us at sales@kunjsheetsplates.com.
Duplex steel circles are extensively utilised in sectors where exceptional strength and resistance to corrosion are essential. Because of their longevity and resistance to corrosion caused by chloride stress, they are utilised in offshore platforms, pressure vessels, and subsea equipment in the oil and gas industry. They are used in piping systems, tanks, and heat exchangers in the chemical and petrochemical industries. Their strong resistance to corrosion in saltwater is advantageous for marine applications. Duplex Steel Circles are also used in desalination facilities, paper and pulp manufacturing, and architectural projects that call for both environmental resilience and structural strength. They are a popular option due to their long service life and affordability.
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