- sales@samiapipes.com
- Tunis, Tunisia
Home > Duplex Steel > Duplex Steel Welded Tubing
Samia Pipes and Tubes is a reliable manufacturer and supplier of Duplex Steel Welded Tubing, operating from Tunis, Tunisia. Engineered to combine strength and corrosion resistance in equal measure, this tubing is built for demanding industrial environments. Using advanced welding technology, strict quality control, and precise dimensional standards, Samia Pipes and Tubes delivers welded tubing with clean seams, uniform walls, and dependable performance. Trusted across energy, marine, and chemical sectors, the company provides tubing solutions that stand firm under pressure, resist corrosion, and deliver long-term operational confidence.
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 Samia 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.
Samia Pipes and Tubes, one of the largest suppliers of Duplex Steel Welded Tubing in the Tuniss, Tunisia. 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 Samia 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@samiapipes.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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