- sales@ojaspipesandtubes.co.in
- Kolkata, Kolkata
Home > Duplex Steel > Duplex Steel ERW Pipes
Ojas Pipes and Tubes stands out as a leading manufacturer and supplier of top-notch Duplex Steel ERW Pipes, proudly based in Kolkata, India. With a strong focus on excellence and innovation, Ojas specializes in Electric Resistance Welded (ERW) pipes made from duplex stainless steel, celebrated for its remarkable strength and resistance to corrosion. The company tailors solutions for various industries, including oil & gas, petrochemical, marine, and construction. Built to meet international standards, these pipes ensure durability, weldability, and cost-effectiveness. Ojas Pipes and Tubes has built a solid reputation for delivering quality products, timely service, and dependable customer support throughout India and beyond.
Duplex Steel ERW Pipes are characterized by a well-balanced microstructure of austenite and ferrite, featuring essential elements like 21–23% Chromium, 4.5–6.5% Nickel, 2.5–3.5% Molybdenum, and added Nitrogen to boost corrosion resistance. This unique composition results in impressive tensile strength (minimum 620 MPa), yield strength (minimum 450 MPa), and good elongation (around 25%). The dual-phase structure provides outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Duplex ERW pipes maintain their structural integrity even under high pressure and temperature, making them perfect for challenging and chloride-rich environments.
| Specifications | ASTM A790 / ASME SA790 |
| Sizes | 8″ NB to 24″ NB |
| Wall Thickness | 0.5 to 150mm Thick |
| Schedule | SCH 5S, 10S,10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS |
| Length | Single Random, Double Random & Required Length |
| Form | Round, Square, Rectangular, Hydraulic Pipes |
| Type | Electric Resistance Welded |
| End | Plain end, Bevelled end |
| Length | Single Random, Double Random & Cut Length |
| Material | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| Duplex Steel | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 – 26.00 | 3.00 – 4.00 | 6.00 – 8.00 | 0.20 – 0.30 | 57.61 min |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex 2205/ S31803 | S31803 | 1.4462 |
Choosing Duplex Steel ERW Pipes from Ojas Pipes and Tubes ensures high quality and durability, as these pipes offer excellent corrosion resistance and strength. Our commitment to exceptional service and reliable delivery guarantees customer satisfaction across various industrial applications. Our expertise in stainless steel products ensures you receive a top-tier solution tailored to your needs.
Ojas Pipes and Tubes, one of the largest suppliers of Duplex Steel ERW Pipes in Kolkata, India, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
Yes, we offer custom sizes for Duplex Steel ERW Pipes to meet your specific requirements. Our team at Ojas Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@ojaspipesandtubes.co.in.
Duplex Steel ERW Pipes find extensive use in industries that require high strength, corrosion resistance, and cost-effective piping solutions. These pipes are particularly suited for offshore oil drilling, subsea pipelines, desalination plants, and chemical processing units due to their ability to withstand chloride-induced corrosion. They also serve in structural applications, bridges, and storage tanks, offering an excellent strength-to-weight ratio and long service life. In the power generation sector, they are utilized in boiler and heat exchanger systems. Additionally, Duplex ERW pipes are a popular choice for various applications, thanks to their reliability and performance.
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