ASTM A790 UNS S32750 Seamless Pipes & Tubes

ASTM UNS S32750 Pipe Manufacturer

M-Pipe & Fitting Solution Inc is a reputable company that manufactures and supplies high-quality ASTM a790 UNS S32750 seamless pipes & tubes. In industrial applications, choosing suitable materials for important tasks is essential to ensure they are safe, work well, and last long. The Super Duplex SA 790 UNS S32750 grade, of which these seamless pipes and tubes are a part, has excellent qualities that make it a good choice in harsh environments.

Understanding Seamless Pipes and Tubes ASTM A790 UNS S32750

ASTM A790 UNS S32750 is a super duplex stainless steel grade with both austenite and ferrite microstructures, making it rust-resistant and robust. The name “UNS S32750” refers to the scientific makeup of the material, which is 25% chromium, 7% nickel, 3.7% molybdenum, and other elements like nitrogen, copper, and tungsten that make the material stronger. This material’s outstanding performance in corrosive and complex environments is partly due to its unique makeup.

Key Features of Seamless Pipes and Tubes ASTM A790 UNS S32750 

Corrosion resistance: One of the most impressive things about ASTM A790 UNS S32750 seamless pipes and tubes is how well they don’t rust. Because they have a lot of chromium, molybdenum, and a duplex microstructure, they are very resistant to corrosion from salt, brine solutions, acids, and chlorides. It makes them perfect for use offshore and on the water, where harsh conditions are always problematic.

High Mechanical Strength: The mechanical strength of ASTM A790 UNS S32750 seamless welded pipes is much higher than that of traditional austenitic stainless steel grades. Because they are more robust, they can handle high pressure and temperatures. They make them suitable for use in the oil and gas business, chemical processing plants, and petrochemical facilities.

Excellent Toughness and Ductility: These seamless pipes and tubes are powerful, but they also have excellent toughness and ductility. It means they won’t crack or bend even when they are under a lot of stress. Because of this, they can be used in icy places, like liquid natural gas (LNG) plants and storage tanks.

Low thermal expansion: ASTM A790 UNS S32750 has a low thermal expansion rate, which means it stays the same size even if the temperature changes. This feature is essential for pipelines and heat exchangers, where temperature changes happen often.

Weldability: The chemical makeup and duplex microstructure of the material make it easy to weld and make and join. It means that ASTM A790 UNS S32750 seamless pipes and tubes can be used for a wide range of tasks that require complex shapes and arrangements.

ASTM A790 UNS S32750 Seamless Pipes and Tubes Can Be Used For

Because of their great qualities, ASTM A790 UNS S32750 seamless pipes and tubes can be used in a wide range of industries:

In the oil and gas industry, these seamless pipes and tubes are used for flowlines, risers, umbilicals, and other subsea parts on offshore drilling and production sites. They are good choices for harsh offshore settings because they are resistant to corrosion and have high strength.

Chemical Processing: ASTM A790 UNS S32750 seamless pipes and tubes are used a lot in chemical processing plants, where they handle chemicals and acids that are harmful to metals. They can be used for essential tasks in this business because they don’t get pitted or corrode in cracks.

Desalination Plants: ASTM A790 UNS S32750 seamless pipes and tubes are used in seawater desalination plants because they are very resistant to rust caused by chloride. These lines are essential for moving and handling seawater during the desalination process.

Pulp and Paper Industry: In the pulp and paper industry, where corrosive chemicals are used during the pulping process, these smooth pipes and tubes are used in various ways, such as in digester systems and bleach plants.

Renewable Energy: ASTM A790 UNS S32750 seamless pipes and tubes are used in places like offshore wind farms and tidal energy centers that use renewable energy. Their strength and resistance to rust ensure that essential parts of these projects will last long.

Construction and architecture: These seamless pipes and tubes are used in architecture to support structures and decorate building surfaces because they look good, are strong, and don’t rust.

Considerations for Welding and Fabrication

Special care must be taken to keep their desired features when welding and making ASTM A790 UNS S32750 seamless welded pipes. Also, after welding, the material may need heat treatment to restore its original qualities. Choosing the suitable welding filler material is essential to get the best results.

Due to its flexibility, ASTM A790 UNS S32750 is easy to work with when making things like bends, cuts, and shapes. But it’s essential to work with experienced manufacturers familiar with super duplex stainless steel to ensure the material is handled correctly and to avoid problems that could affect how well it works.

Keeping rules and regulations

Pipes and tubes made with ASTM A790 UNS S32750 align with worldwide standards like ASTM, ASME, and EN. These guidelines ensure that the material is made consistently and well and meets the needs of different applications.

ASTM A790 UNS S32750 seamless pipes and tubes from the Super Duplex SA 790 UNS S32750 grade are exceptional materials with a unique mix of high mechanical strength, toughness, and corrosion resistance. Their wide range of uses includes oil and gas, chemical processing, desalination, renewable energy, and building. These seamless pipes and tubes ensure that engineering projects are reliable and work well, especially in harsh and corrosive environments. Because ASTM A790 UNS S32750 seamless pipes and tubes have better properties, engineers and project managers can use them to make solutions that stand the test of time. They make them the best choice for critical industrial uses. M-Pipe & Fitting Solution Inc provides certified Pipes & Tubes that meet international standards such as API, ASTM, and ISO 9001:2015.

GradesDuplex Steel – UNS NO. S 32750
Standards:ASTM, ASME and API
Specifications:ASTM A 789, 790/ ASME SA 789, 790
Size:1/2″NB TO 12 “NB IN
Seamless Pipes & Tubes Sizes:1/2” NB – 8” NB
Welded Pipes & Tubes Sizes:6” NB – 24” NB
Outer Diameter:6.0-630mm
Length:Single Random, Double Random & Required Length
Schedule:SCH20, SCH30, SCH40, STD, SCH80
Form:Round, Square, Rectangular, Hydraulic Etc.
Type:Seamless / ERW / Welded / Fabricated / CDW
End:Plain End, Beveled End, Treaded




Chromium is a key element in stainless steel alloys as it provides excellent corrosion resistance. In ASTM A790 UNS S32750, the chromium content is typically between 24% and 26%.