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Home > Duplex Steel > Duplex Steel Welded Tubing
Esha Steel, based in Kolkata, is a trusted manufacturer and supplier of high-quality Duplex Steel Welded Tubing, serving diverse industries with precision-engineered solutions. Known for its commitment to excellence, the company delivers tubing that meets global standards of strength, corrosion resistance, and durability. With advanced manufacturing facilities and a skilled technical team, Esha Steel ensures each product offers superior performance in demanding environments. Their Duplex Steel Welded Tubing is widely used in applications requiring exceptional mechanical properties and long service life. Through consistent quality, timely delivery, and customer-centric service, Esha Steel has earned a strong reputation in the steel industry.
The composition of Duplex Steel Welded Tubing includes chromium (22–23%), nickel (4.5–6.5%), molybdenum (2.5–3.5%), nitrogen, manganese, and small amounts of other alloys, creating a balanced microstructure of austenite and ferrite. This unique blend significantly boosts corrosion resistance, especially against chloride stress corrosion and pitting. On the mechanical side, it boasts impressive tensile strength (minimum 620 MPa), yield strength (minimum 450 MPa), and excellent fatigue resistance. Plus, it maintains good weldability and toughness across a wide temperature range, making it perfect for demanding industrial settings.
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 Rashdan 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.
Duplex Steel Welded Tubing contains a balanced microstructure of austenite and ferrite, giving it enhanced strength and corrosion resistance. Typical composition includes chromium (21–23%), nickel (4.5–6.5%), molybdenum (2.5–3.5%), nitrogen, and low carbon content, ensuring excellent pitting and crevice corrosion resistance. Mechanically, it offers high tensile strength, superior yield strength, and impressive toughness even at low temperatures. Its weldability and stress-corrosion cracking resistance make it suitable for harsh operating conditions. The combination of strength and corrosion resistance allows Duplex Steel Welded Tubing to perform reliably in chemical, marine, and industrial environments.
Yes, we provide custom sizes for Duplex Steel Welded Tubing to meet your specific requirements. At Rashdan 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@rashdanpipes.com.
Duplex Steel Welded Tubing is extensively utilized in industries that require both strength and corrosion resistance in harsh conditions. It’s commonly found in oil and gas pipelines, chemical processing plants, desalination facilities, heat exchangers, and marine environments where exposure to chlorides is prevalent. Additionally, sectors like power generation, paper and pulp, and structural applications depend on these tubes for their durability and long service life. Their remarkable weldability and resistance to localized corrosion ensure reliable performance in both offshore and onshore projects, making them a top choice for critical engineering and industrial applications.
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