Super Duplex Steel UNS S32750 Tubes Manufacturer
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Midland Alloys Inc. is a trusted Manufacturer and Supplier of Super Duplex Steel UNS S32750 Tubes, delivering high-performance tubing solutions built to meet global industrial demands. Designed for superior strength, corrosion resistance, and long-term durability, these tubes are ideal for harsh environments. The balanced microstructure of austenite and ferrite found in the UNS S32750 grade, also referred to as Duplex Alloy 2507, improves mechanical qualities and resistance to pitting, crevices, stress corrosion and cracking. Products, that support crucial applications in the power, chemical and offshore industries include Super Duplex S32750 Seamless Tubes, Welded Tubes, ERW Tubes, Fabricated Tubes, A789 S32750 Condenser Tubes, Boiler Tubes, Heat Exchanger Tubes and Bright Annealed Tubes. As an ISO-certified company, we ensure quality control and the ability to export internationally with prompt delivery and readily available stock. They are manufactured in compliance with DIN/EN, ASTM A789 and ASME SA 789 standards. Chromium (24–26%), nickel (6–8%), molybdenum (3–5%) and a low carbon content for improved weldability are among the chemical components of the tubes.
Benefits of Super Duplex Steel UNS S32750 Tubes
UNS S32750 Tubes are well-known for their long term durability, outstanding mechanical strength, and resistance to corrosion. These tubes are designed to withstand harsh conditions as it provide a dependable and affordable options for various industrial uses.
- These tubes provide greater yield and tensile strength than typical stainless steel, as they ideal for high-pressure applications.
- These tubes offer outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion, and are best used in severe applications like seawater and chemical processing.
- Thin walls can be utilized with excellent corrosion resistance, reducing material weight and overall system cost.
- The two-phase microstructure delivers improved fatigue strength and outstanding long-term structural integrity in mechanical and structural applications.
- These tubes are available in various forms, like Super Duplex S32750 Seamless Tubes, ERW, Welded, Fabricated, and A789 S32750 Boiler Tubes, due to which they can be used for a variety of industries, like oil and gas and power generation.
- The low carbon balance, along with the balanced alloying elements, ensures good weldability, formability, and machinability.
Super Duplex Steel UNS S32750 Tubes Specifications

Seamless Tube OD : 1 / 2" NB - 16" NB Welded Tube OD : 6.35 to 114.3 mm EFW Tube Size : 6″ NB – 24″ NB

ASTM A 789, ASME SA 789

Seamless / Welded / ERW / Fabricated / CDW / 100% X Ray Welded

Round, Square, Rectangular, Hydraulic Etc

Single Random, Double Random, Standard & Cut length

Plain Ends (PE), Threaded Ends (TE), Bevelled Ends (BW), Grooved Mechanical Joints or Grooved Ends, TBE (Treaded Both Ends)

SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Bright, Polish, and Black
Difference Between Super Duplex Steel UNS S32750 Tubes and Duplex Steel UNS S31803 Tubes
In terms of strength, resistance to corrosion, and longevity, Super Duplex Steel UNS S32750 Tubes perform better than Duplex Steel UNS S31803 Tubes. While both are duplex grades, S32750, also known as Duplex Alloy 2507, contains higher levels of Chromium, Molybdenum, and Nitrogen. The combination boosts its resistance to chloride-induced corrosion and gives it higher mechanical strength. UNS S32750 is preferred for extreme environments like offshore oil rigs, seawater systems, and chemical plants. On the other hand, UNS 31803 is appropriate for general-purpose use with moderate corrosion hazards. S32750’s has greater alloy content, making it more effective in hostile, high-pressure, or corrosive service, providing longer service life performance and lower maintenance.
Contact us today to discuss how Super Duplex Steel UNS S32750 Tubes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Stainless Steel Tubes Grades We Offer
Round Bar

Analytic

Cut to Length

Centering

Heating

Perforation

Inspection of Size

Pickling

Inspection of Surface

Lubricating

Cold Drawing (Cold Rolling)

Degreasing

Annealing

Straightening

Cut

Pickling / Passivating

Inspection

Analytic

Marking

Packing & Shipping
Applications of Super Duplex Steel UNS S32750 Tubes
Super Duplex S32750 tubes find extensive applications in severe applications where both high mechanical strength and superior corrosion resistance are required. In the oil and gas industry, they are used in subsea pipelines, risers, and topside processing systems. In chemical processing, they handle aggressive media such as chlorides, acids, and solvents. Power plants use A789 UNS S32750 heat exchanger tubes, boiler tubes, and condenser tubes for their thermal efficiency and corrosion resistance. Their ability to withstand corrosion from saltwater makes these pipes perfect for ballast systems and desalination units in the marine industry. These tubes are also utilized in high-pressure firefighting systems, structural supports, and the paper and pulp industries.
Why Choose Midland Alloys Inc. for Super Duplex Steel UNS S32750 Tubes
Midland Alloys Inc. is a reliable supplier of Super Duplex S32750 tubing solutions with consistent quality, technical conformity, and quick service. With instant availability of S32750 tubing in India, ISO-approved systems and a comprehensive line of A789 and SA789 compliant tubes, we assured prompt delivery, and a worldwide supply chain. From seamless to fabricated, ERW, welded, and bright annealed forms, each tube is made under strict control to meet industry standards. All our products undergo rigorous testing to supports projects with material traceability, precise specifications, and long-term reliability, making them a preferred partner for high-demand applications worldwide.
FAQs
Yes. Super Duplex is much stronger and more resistant to corrosion than 316 stainless steel, particularly in environments with an excessive amount of chloride.
Strength and corrosion resistance are superior in 2205 duplex, particularly in chemical and marine environments.
Super Duplex is stronger and more resistant to corrosion than Duplex as it contains more chromium, molybdenum and nitrogen.



