- sales@ojaspipesandtubes.co.in
- Kolkata, Kolkata
Home > Duplex Steel > Duplex Steel Welded Tubing
Ojas Pipes and Tubes stands out as a top manufacturer and supplier of Duplex Steel Welded Tubing in Kolkata, India. We specialize in delivering high-quality welded solutions tailored for tough structural and corrosion-resistant applications. Our Duplex welded tubes, including well-known grades like UNS S31803 (2205) and UNS S32205, are crafted using cutting-edge welding techniques and rigorous quality controls. They offer remarkable strength, stress corrosion resistance, and durability. Meeting international standards such as ASTM A789 and A790, our welded tubing finds its place in various industries, including oil & gas, petrochemicals, marine, and desalination. At Ojas, we guarantee consistent quality, corrosion resistance, and cost-effectiveness in every meter of our Duplex Steel Welded Tubing.
Duplex Steel Welded Tubing boasts a well-balanced chemical composition, featuring around 22% Chromium, 5–6.5% Nickel, 3% Molybdenum, along with Nitrogen and Manganese. This unique blend results in a dual-phase microstructure of austenite and ferrite, providing exceptional mechanical strength and corrosion resistance. The mechanical properties include a tensile strength ranging from 620 to 880 MPa, yield strength between 450 and 550 MPa, and an elongation of 25% or more. Our welded tubing excels in resisting pitting, crevice corrosion, and chloride-induced stress corrosion cracking, making it perfect for high-pressure, high-corrosion environments.
Pipe Range : 1 / 2″ NB – 8″ NB
Outer Diameter : 6.0-630mm
Wall Thickness : 0.3mm – 50 mm
Schedules : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Length : Single Random, Double Random & Required Length
Specifications : ASTM A789 / ASME SA789
Types : Welded / ERW / Fabricated
| Duplex | Welded |
|---|---|
| Ni | 4.50 – 6.50 |
| Fe | 63.72 min |
| Cr | 22.0 – 23.0 |
| C | 0.030 max |
| Si | 1.00 max |
| Mn | 2.00 max |
| P | 0.030 max |
| S | 0.020 max |
| N | 0.14 – 0.20 |
| Duplex | Welded |
| Density (g/cm 3) | 7.805 |
| Density (lb/in 3) | 0.285 |
| Melting Point (°C) | 1420 – 1465 |
| Melting Point (°F) | 2588 – 2669; |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Duplex Steel Welded Tubes from Ojas Pipes and Tubes ensures superior quality and durability, offering outstanding corrosion resistance and high strength. Our dedication to delivering exceptional service and reliable products guarantees customer satisfaction across a wide range of industrial applications. With our expertise in Duplex steel solutions, you can trust us to provide a top-tier, customized piping solution that meets your specific requirements.
Ojas Pipes and Tubes, one of the largest suppliers of Duplex Steel Welded Tubing in the Kolkatas, India. Offers a wide range of high-quality pipes and tubes designed for various industrial applications. Their extensive inventory and dedication to exceptional service make them a trusted choice for Duplex steel products in the region, delivering reliable solutions to meet diverse project requirements.
Yes, we provide custom sizes for Duplex Steel Welded Tubing to meet your specific requirements. At Ojas Pipes and Tubes, our team is dedicated to delivering tailored solutions for all your piping and tubing needs. For more information, please contact us at sales@ojaspipesandtubes.co.in.
Duplex Steel Welded Tubing is a go-to choice in industries that demand high strength and resilience against harsh conditions. It’s commonly found in heat exchangers, desalination plants, chemical processing, marine equipment, and offshore oil & gas platforms. This tubing performs exceptionally well in environments rich in chlorides and sour service, ensuring long-term reliability and resistance to corrosion fatigue. Additionally, it’s utilized in the pulp and paper industries, pressure vessels, and power generation systems. The combination of cost-effectiveness and durability makes it an ideal solution for various applications.
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