- sales@ojaspipesandtubes.co.in
- Kolkata, Kolkata
Home > Duplex Steel > Duplex Steel Instrumentation Tubing
Ojas Pipes and Tubes stands out as a reliable manufacturer and supplier of top-notch Duplex Steel Instrumentation Tubing, proudly based in Kolkata, India. These tubes are crafted for precision and built to last, even in the toughest environments. Made from high-quality duplex stainless steel grades like UNS S32205 and S31803, they boast remarkable corrosion resistance and mechanical strength. Industries such as oil & gas, chemical processing, power generation, and marine systems rely on these tubes. Ojas is committed to delivering consistent quality, precise dimensions, and compliance with global standards, ensuring dependable tubing solutions for critical control and instrumentation systems.
Duplex Steel Instrumentation Tubing typically consists of around 22% Chromium, 5–6% Nickel, 3% Molybdenum, and a touch of Nitrogen, resulting in a well-balanced ferritic-austenitic microstructure. This unique blend provides outstanding corrosion resistance, especially against stress corrosion cracking and pitting. The tubing boasts a tensile strength of about 620 MPa, a yield strength of around 450 MPa, and an elongation of roughly 25%. It holds up well under pressure and high temperatures, while also offering excellent fatigue strength and weldability—making it perfect for applications that demand long-lasting performance and mechanical reliability.
| 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 | : | Instrumentation |
| 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 |
| 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 Instrumentation Tubes from Ojas 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.
Ojas Pipes and Tubes, one of the largest suppliers of Duplex Steel Instrumentation Tubing in the Kolkatas, India. 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 Instrumentation Tubing to meet your specific requirements. At Ojas 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@ojaspipesandtubes.co.in.
Duplex Steel Instrumentation Tubing finds its place in various instrumentation, control, and process measurement systems where precision and corrosion resistance are paramount. You’ll often see it in chemical injection systems, hydraulic and pneumatic control lines, and sampling lines on offshore platforms, in refineries, and chemical plants. It’s also utilized in nuclear and thermal power plants, desalination systems, and marine engineering, especially in high-pressure and corrosive environments. Its ability to resist chlorides and harsh chemicals makes it a great fit for saline conditions.
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