- sales@liampipes.us
- Houston , USA
Home > Duplex Steel > Duplex Steel Pipe
Liam Pipes and Tubes is a reliable manufacturer and supplier of Duplex Steel Welded Pipes based in Houston, USA. We serve industries that demand exceptional strength and corrosion resistance. Our duplex welded pipes are crafted from top-notch materials like UNS S31803 and UNS S32205, blending the advantages of both austenitic and ferritic stainless steels. These pipes are designed to withstand stress corrosion cracking, pitting, and crevice corrosion, making them perfect for tough chemical and marine environments. Available in a range of sizes and thicknesses, our pipes are produced in accordance with ASTM, ASME, and international standards. At Liam Pipes and Tubes, we prioritize precision, reliability, and timely delivery for our clients around the globe.
Our Duplex Steel Welded Pipes contain about 22% chromium, 5–6% nickel, 3% molybdenum, and the rest is iron, with nitrogen added to boost strength. This unique dual-phase microstructure gives them impressive tensile strength (620–850 MPa), outstanding yield strength (almost double that of austenitic stainless steel), and good weldability. These pipes maintain their structural integrity even under high pressure and in corrosive conditions, particularly in environments rich in chlorides. Liam Pipes and Tubes produces duplex welded pipes that comply with ASTM A790 and A928 standards, ensuring full material traceability and strict quality assurance for demanding applications.
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 Liam 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.
Liam Pipes and Tubes, one of the largest suppliers of Duplex Steel Welded Pipes in Houston , USA, 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 Liam Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@liampipes.us.
Duplex Steel Welded Pipes are extensively used in industries that encounter extreme operating conditions. In the oil and gas sector, they are essential for offshore platforms, subsea pipelines, and processing systems due to their strength and resistance to corrosion. In chemical and petrochemical plants, they are perfect for transporting aggressive fluids. They also play a vital role in desalination plants, marine environments, pulp and paper mills, and as structural components in construction. Liam Pipes and Tubes provides duplex welded pipes designed for durability, safety, and long-lasting performance in highly corrosive and mechanically challenging environments.
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