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In the heart of Naypyidaw, Tun Pipes has built a reputation for supplying industrial materials that meet the rigorous demands of modern engineering. We take particular pride in our Duplex Steel Tubing S31803, a product engineered for situations where both strength and corrosion resistance are non-negotiable. Our commitment is to provide reliable, high-performance solutions that support the ambitious infrastructure and industrial projects taking shape across Myanmar, ensuring our clients receive tubing they can trust for their most critical applications.
The strength of Duplex Steel S31803 comes from its balanced composition of chromium, nickel, molybdenum, and nitrogen. This blend gives the tubing a two-phase microstructure that combines the best qualities of austenitic and ferritic steels. The result is a material with outstanding mechanical properties, including exceptionally high tensile and yield strength, along with excellent toughness. This makes it significantly stronger than standard stainless steels, allowing for thinner, lighter-weight tubes without any sacrifice in performance or durability.
| Standard | : | ASTM A790 / ASME SA790 UNS S31803, S32205, S32550, S32750, S32760 |
| Materials | : | ASTM A815 – UNS S31803 |
| Size | : | 1/2″NB TO 12 “NB IN |
| Seamless Pipes & Tubes Sizes | : | 1/2” NB – 8” NB |
| Welded Pipes & Tubes Sizes | : | 6” NB – 24” NB |
| Schedule | : | SCH20, SCH30, SCH40, STD, SCH80 |
| Type | : | Welded / Fabricated / Seamless |
| Length | : | Single Random, Double Random & Cut Length. |
| Thickness | : | 0.5-45mm |
| Outer Diameter | : | 6.0-630mm |
| Dimensions | : | OD(6.0-630)*WT(0.5-45)mm |
| Duplex Steel | Ni | Fe | C | Mn | Si | Mo | Cr | P | S |
| Bal | 0.03 | 1.o | 3.0 – 3.5 | 2.0 | 22.0 – 23.0 | 4.5 – 6.5 | 0.02 | 0.14 – 0.2 |
| STANDARD | UNS | WERKSTOFF NR. |
| Duplex Steel | S31803 | 1.4462 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 116000 , MPa – 800 | Psi – 80000 , MPa – 550 | 15 % |
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 Tubing S31803 from Tun 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.
Tun Pipes and Tubes, one of the largest suppliers of Duplex Steel Tubing S31803 in the Naypyidaws, Myanmar. 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 Tubing S31803 to meet your specific requirements. At Tun 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@tunpipes.com.
Duplex Steel Tubing S31803 finds extensive use in industries that require both high strength and corrosion resistance. In the oil and gas sector, it’s commonly used in pipelines, risers, and subsea equipment due to its ability to endure seawater and chloride-induced stress. The chemical and petrochemical industries rely on it for heat exchangers, process piping, and pressure vessels. Additionally, it’s utilized in marine applications, power plants, and desalination plants where durability and resistance to harsh environments are crucial. The long service life and cost-effectiveness of this tubing make it a favored material for critical operations.
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