- sales@rithavpipesandtubes.co.in
- Delhi, India
Home > Super Duplex Steel > Super Duplex Steel Boiler Tubing
Rithav Pipes and Tubes stands out as a top manufacturer and supplier of Super Duplex Steel Boiler Tubing, proudly based in Delhi, India. We focus on delivering high-performance boiler tubes crafted from Super Duplex stainless steel, designed to endure extreme temperatures, high pressures, and harsh corrosive environments. Our boiler tubing is known for its exceptional strength, thermal resistance, and durability, making it perfect for critical heat exchange and steam generation systems. With rigorous quality controls and a commitment to international standards, Rithav Pipes and Tubes caters to industries like power generation, petrochemicals, oil and gas, and marine, providing dependable and efficient boiler tubing solutions throughout India and beyond.
Super Duplex Steel Boiler Tubing typically contains 25% chromium, 7% nickel, 3.5% molybdenum, along with added nitrogen, copper, and tungsten. This unique blend offers remarkable resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. The dual-phase ferritic-austenitic microstructure ensures high tensile strength (up to 800 MPa) and yield strength (around 550 MPa). These tubes maintain their structural integrity even under high temperatures and pressures, boasting excellent weldability and resistance to thermal fatigue, making them ideal for demanding boiler and heat exchanger applications in challenging service conditions.
| Specifications | ASTM A789 ASME SA789 |
| Dimensions | ASTM, ASME and API |
| Tube Size | 1/2″NB TO 12 “NB IN |
| Specialized in | Large Diameter Size |
| Schedule | SCH20, SCH30, SCH40, STD, SCH80 |
| Type | Fire Boiler Tubing/ Hot Rolled Boiler Tube/ Heat Expansion Boiler Tube/ IBR Seamless Boiler Tubes |
| Material | Super Duplex Steel |
|---|---|
| Carbon (C) Max. | 0.030 |
| Manganese (Mn) Max. | 1.20 |
| Phosphorous (P) Max. | 0.035 |
| Sulphur (S) Max. | 0.020 |
| Silicon (Si) Max. | 0.80 |
| Chromium (Cr) | 24.0–26.0 |
| Nickel (Ni) | 6.0–8.0 |
| Molybdenum (Mo) | 3.0–5.0 |
| Nitrogen (N) | 0.24–0.32 |
| Iron (Fe) | Bal. |
| Copper (Cu) | 0.50 |
| Other Elements | — |
| Tensile Strength | Yield Strength | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | UNS Designation | Spec. | psi | MPa | ksi | psi | MPa | ksi | Elongation in 2 in. (min.) % | Grain Size Req. | Max. Hardness | Modulus of Elasticity (x106psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Conductivity (BTU-in/ ft2-h-°F) |
| Super Duplex | – | A789, A790 | 100,000 | 690 | 100 | 70,000 | 485 | 70 | 20 | — | 30.5 Rc | — | — | — |
| Super Duplex | – | A789, A790 | 116,000 | 800 | 116 | 80,000 | 550 | 80 | 15 | — | 32 Rc | 27.5 | 7.2 | |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Super Duplex Steel Boiler Tubing from Rithav 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.
Rithav Pipes and Tubes, one of the largest suppliers of Super Duplex Steel Boiler Tubing in the Delhis, 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 Super Duplex steel products in the region, delivering reliable solutions to meet diverse project requirements.
Yes, we provide custom sizes for Super Duplex Steel Boiler Tubing to meet your specific requirements. At Rithav 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@rithavpipesandtubes.co.in.
Super Duplex Steel Boiler Tubing is extensively utilized in power plants for steam boilers, superheaters, and reheaters, thanks to its ability to withstand high temperatures and thermal stress. In the oil and gas and petrochemical industries, it’s employed for high-pressure boilers and heat exchangers where corrosive media and intense heat are common. Marine and desalination facilities benefit from its resistance to seawater corrosion, even under thermal cycling. Additionally, it finds applications in chemical processing units and the pulp and paper industry, where reliable thermal performance and long-lasting corrosion resistance are crucial for smooth and efficient operations.
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