- sales@davidpipes.com
- Canberra, Australia
Home > Duplex Steel > Duplex Steel Pipe
David Pipes and Tubes, located in Canberra, Australia, stands out as a top manufacturer and supplier of high-quality Duplex Steel Welded Pipes. These pipes cleverly blend the impressive strength of ferritic steel with the corrosion resistance of austenitic steel, making them incredibly durable and reliable for tough industrial settings. Crafted with precision and advanced welding techniques, they ensure a consistent structure, accurate dimensions, and long-lasting performance. Catering to clients in sectors like oil and gas, chemical processing, marine, and desalination, David Pipes and Tubes provides welded pipes that not only meet strict international standards but also serve both critical and structural needs.
The Duplex Steel Welded Pipes are produced from grades like 2205 (UNS S31803/S32205) and 2507 (UNS S32750), featuring 22–25% chromium, 4–7% nickel, 3–4% molybdenum, and nitrogen. They boast impressive tensile strength (620–880 MPa), yield strength (450–650 MPa), and an elongation of 25–35%. Thanks to their duplex microstructure, these pipes offer outstanding resistance to pitting, stress corrosion cracking, and corrosion from chlorides, combining toughness, mechanical strength, and durability even in the harshest conditions.
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 |
| Grade | S31803 |
| 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 Pipes from David 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.
David Pipes and Tubes, one of the largest suppliers of Duplex Steel Welded Pipes in Canberra, Australia, 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 Welded Pipes to meet your specific requirements. Our team at David Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@davidpipes.com.
These pipes find extensive use in oil and gas pipelines, chemical processing plants, desalination facilities, marine applications, and the pulp and paper industry. They are particularly well-suited for high-pressure systems and the handling of corrosive fluids, especially in environments rich in chlorides. With their exceptional corrosion resistance and mechanical strength, Duplex Steel Welded Pipes are perfect for structural and critical piping applications, ensuring long-term efficiency, safety, and performance.
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