- sales@bosegapipes.co.za
- Cape Town, South Africa
Home > Super Duplex Steel > Super Duplex Steel Boiler Tubing
Bosega Pipes and Tubes is a reputable manufacturer and supplier of Super Duplex Steel Boiler Tubing based in Cape Town, South Africa. They provide top-notch tubing solutions that are engineered for exceptional strength, corrosion resistance, and thermal performance. This type of tubing is specifically designed to handle extreme pressure and temperature conditions, making it perfect for critical heat transfer applications. Bosega takes pride in their precision manufacturing, ensuring smooth internal surfaces and accurate dimensions, all while adhering to international quality standards. This commitment results in durable and efficient tubing solutions suitable for power plants, chemical industries, and marine environments.
Super Duplex Steel Boiler Tubing is primarily made up of iron, chromium (24–26%), nickel (6–8%), molybdenum (3–4%), and nitrogen, which together provide remarkable corrosion resistance and mechanical strength. It boasts high tensile and yield strength, excellent fatigue resistance, and outstanding protection against pitting, crevice, and stress corrosion cracking. The balanced microstructure of ferrite and austenite contributes to its impressive toughness and thermal stability, ensuring it maintains structural integrity even under the demanding conditions of high-pressure and high-temperature boiler operations.
| 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 Bosega 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.
Bosega Pipes and Tubes, one of the largest suppliers of Super Duplex Steel Boiler Tubing in the Cape Towns, South Africa. 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 Bosega 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@bosegapipes.co.za.
This type of tubing is widely utilized in power generation, petrochemical, and marine industries for applications such as boilers, heat exchangers, condensers, and superheater systems. Its exceptional resistance to chloride-rich and high-temperature environments makes it particularly well-suited for desalination plants and offshore platforms. Additionally, it finds use in chemical processing and the pulp and paper industries, providing a long service life, low maintenance, and reliable performance in highly corrosive and thermally challenging applications.
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