- sales@davidpipes.com
- Canberra, Australia
Home > Duplex Steel > Duplex Steel Coil Tubing
David Pipes and Tubes, located in Canberra, Australia, stands out as a top manufacturer and supplier of Duplex Steel Coil Tubing. They specialize in high-performance stainless steel tubes that are expertly designed to offer exceptional corrosion resistance, mechanical strength, and flexibility. Crafted with precision, these coiled tubes boast uniform wall thickness, smooth internal surfaces, and precise dimensions. The Duplex Steel Coil Tubing from David Pipes and Tubes is perfect for industries like chemical processing, petrochemical, offshore oil and gas, desalination, and power generation, where long-lasting reliability, resistance to chloride stress corrosion, and easy installation in intricate systems are essential.
This Duplex Steel Coil Tubing is made up of 22% chromium, 5–6% nickel, 3% molybdenum, and 0.14–0.20% nitrogen, creating a well-balanced duplex microstructure. This unique composition provides remarkable resistance to pitting, crevice corrosion, and stress-corrosion cracking, especially in chloride-rich and corrosive settings. The tubing showcases a tensile strength ranging from 620 to 850 MPa, a yield strength of 450 to 550 MPa, and impressive ductility. Its coiled design not only enhances flexibility but also minimizes the need for fittings, making installation in tight or complex piping systems much easier.
| Specifications | ASTM A790 / ASME SA790, ASTM A789 / ASME SA A789 |
| Standard | ASTM, ASME and API |
| Coil Tubes Sizes | 1 / 2″ NB – 8″ NB |
| Duplex Tubes Sizes | 6″ NB – 24″ NB |
| Outer Diameter | 6.0-630mm |
| Thickness | 0.3mm – 50 mm |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Types | Heat Exchanger/ Instrumentation/ Precision Tubing/ Long Coiled Tubing/ Multi-core Coiled |
| Duplex | Coiled |
|---|---|
| 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 Coil Tubing from David 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.
David Pipes and Tubes, one of the largest suppliers of Duplex Steel Coil Tubing in the Canberras, Australia. 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 Coil Tubing to meet your specific requirements. At David 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@davidpipes.com.
Duplex Steel Coil Tubing finds extensive use in heat exchangers, hydraulic and pneumatic lines, chemical transfer systems, offshore installations, and instrumentation applications. Its blend of corrosion resistance, mechanical strength, and flexibility makes it the go-to choice for industries that demand durable, high-performance, and maintenance-free tubing solutions in challenging and corrosive environments.
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