Water Treatment ASTM A790 UNS S32750 Seamless Super Duplex Stainless Steel Pipes
ASTM A790 S32750 is a specification for Seamless Super Duplex Steel Pipes. Super Duplex Steel is a type of stainless steel that has a higher strength and corrosion resistance compared to traditional duplex stainless steel. Super Duplex Steel Seamless Pipes are commonly used in industries such as oil and gas, petrochemical, and chemical processing due to their superior mechanical properties and resistance to corrosion in harsh environments. The seamless construction of these pipes ensures a smooth and uniform surface finish, as well as high strength and durability. They are typically available in various sizes and thicknesses to meet the specific requirements of different applications.
Features:
1. High Corrosion Resistance: ASTM A790 S32750 seamless super duplex steel pipes offer excellent resistance to corrosion in harsh environments, making them suitable for use in industries such as oil and gas, chemical processing, and marine applications.
2. High Strength: Super duplex steel pipes have a higher strength compared to traditional duplex stainless steel, allowing them to withstand high pressure and temperature conditions.
3. Excellent Weldability: ASTM A790 S32750 seamless super duplex steel pipes can be easily welded using common welding techniques, making them versatile and easy to work with.
4. Superior Toughness: Super duplex steel pipes exhibit superior toughness and impact resistance, making them ideal for applications where resistance to stress corrosion cracking is important.
5. Cost-effective: While super duplex steel pipes may have a higher initial cost compared to traditional materials, their long-term durability and low maintenance requirements make them a cost-effective choice in the long run.
6. Extended Service Life: Due to their high corrosion resistance and durability, ASTM A790 S32750 seamless super duplex steel pipes have a longer service life compared to other materials, reducing the need for frequent replacements and repairs.
Chemical Composition:
| Carbon Max. | 0.030 |
| Manganese Max. | 1.20 |
| Phosphorous Max. | 0.035 |
| Sulphur Max. | 0.020 |
| Silicon Max. | 0.80 |
| Chromium | 24.0–26.0 |
| Nickel | 6.0–8.0 |
| Molybdenum | 3.0–5.0 |
| Nitrogen | 0.24–0.32 |
| Iron | Bal. |
| Copper | 0.50 |
Mechanical Properties:
| 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 % |
Applications Of S32750 Super Duplex Steel Pipes:
1. Oil And Gas Industry: ASTM A790 S32750 seamless super duplex steel pipes are commonly used in the oil and gas industry for applications such as offshore drilling, subsea pipelines, and oil refineries. The high corrosion resistance and strength of super duplex steel make it ideal for these harsh environments.
2. Chemical Processing: Super duplex steel pipes are also used in chemical processing plants where they are exposed to corrosive chemicals and high temperatures. The superior corrosion resistance of ASTM A790 S32750 pipes make them well-suited for this application.
3. Water Treatment: Super duplex steel pipes are used in the water treatment industry for applications such as desalination plants, wastewater treatment plants, and water distribution systems. The high strength and corrosion resistance of super duplex steel make it a reliable choice for these critical infrastructure projects.
4. Pulp And Paper Industry: ASTM A790 S32750 seamless super duplex steel pipes are commonly used in the pulp and paper industry for applications such as bleaching plants, paper mills, and chemical processing. The high corrosion resistance and durability of super duplex steel make it well-suited for these demanding environments.
5. Power Generation: Super duplex steel pipes are used in power generation plants for applications such as steam generation, turbines, and heat exchangers. The high temperature and corrosion resistance of ASTM A790 S32750 pipes make them ideal for these high-stress applications.
6. Construction: Super duplex steel pipes are also used in construction projects where high strength and corrosion resistance are required. Applications include bridges, tunnels, and building structures where durability and reliability are essential.
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