Reliable Steel is a leading manufacturer and exporter of ASTM/ASME SA 790 Super Duplex Pipes in mostly countries. We offer best quality ASTM/ASME SA 790 pipes which is most durable and cost-effective. We fabricated ASTM/ASME SA 790 pipes in various sizes and lengths. Our Super Duplex ASTM/ASME SA 790 pipes has magnetic property, yields strength, tensile strength, outstanding durability, high toughness, long-term working ability etc.
Email us Whatsapp us Call usSuper Duplex A/SA A790 pipes are a type of seamless or welded pipe made from a super duplex stainless steel alloy (often UNS S32750 or UNS S32760) that combines high strength with excellent corrosion resistance. This is achieved through a unique duplex microstructure and high concentrations of chromium, molybdenum, and nitrogen, making them ideal for demanding industrial applications like chemical processing, offshore oil and gas, and seawater systems.
Super Duplex A/SA A790 pipes feature a mixed microstructure of austenite and ferrite, which provides high mechanical strength and excellent resistance to localized corrosion.
| Property | Value |
|---|---|
| Density | 7.8 g/cm³ (0.281 lb/in³) |
| Minimum Yield Strength | 550 MPa (80 ksi) |
| Minimum Tensile Strength | 800 MPa (116 ksi) |
| Pitting Resistance Equivalent (PREn) | Typically ≥ 40.0 |
| Chromium | Nickel | Molybdenum | Nitrogen |
|---|---|---|---|
| 24.0–26.0% | 6.0–8.0% | 3.0–5.0% |
The A/SA A790 super duplex pipes are used in harsh environments where conventional stainless steels fail.
A/SA A790 pipes are produced as seamless or by an automatic welding process without the use of a filler metal. They undergo mandatory solution annealing and rapid cooling to ensure optimal mechanical properties and microstructure.