Duplex Stainless Steel Pipes

Duplex A/SA-790 pipes

Reliable Steel is a leading manufacturer and exporter of ASTM/ASME SA 790 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 Duplex ASTM/ASME SA 790 pipes has magnetic property, yields strength, tensile strength, outstanding durability, high toughness, long-term working ability etc.

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Duplex A/SA-790 pipes are seamless and welded stainless steel pipes that conform to the ASTM A790/ASME SA790 standard, which specifies the composition and mechanical properties for duplex and super duplex stainless steel grades like UNS S31803, S32750, and S32760. These pipes are known for their high strength and excellent corrosion resistance, making them suitable for demanding applications in industries such as oil and gas, chemical, and marine environments.

Available forms and sizes

A/SA 790 pipes come in various dimensions, wall thicknesses, and end types:

Outer Diameter	½ inch up to 24 inches for welded pipes.
Schedule	Available in various schedules, such as SCH20, SCH40, SCH80, and XXS.
Ends	Plain end, beveled end, or threaded.

Key properties

High strength: A/SA-790 pipes have a high yield and tensile strength that is often double that of standard austenitic stainless steels like Type 304 and 316.
Corrosion resistance: The high chromium, molybdenum, and nitrogen content provide superior resistance to chloride stress corrosion cracking, pitting, and general corrosion.
Cost-effectiveness: The material’s high strength allows for thinner wall thicknesses, reducing overall system weight and cost.
Weldability: Most standard grades can be welded using conventional methods, although proper procedures and post-welding processes are necessary.

Applications

Oil and gas industry
Chemical processing
Pulp and paper manufacturing
Marine environments
Power generation