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Duplex Steel UNS S32205 Pipes Manufacturer & Supplier

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Duplex Steel UNS S32205 Pipe is a high-strength duplex stainless steel pipe with a balanced ferritic-austenitic structure.  They provide greater corrosion resistance and longevity than ordinary 316L pipes.  This makes duplex steel UNS S32205 pipes suitable for offshore systems, process piping and chloride-intensive applications.  Midland Alloys Inc. is a reputable ASTM A790 S32205 pipe manufacturer that offers both seamless and welded alternatives.  As a leading duplex 2205 pipe supplier in India, we provide these pipes in a variety of diameters, schedules, and special specifications to fulfill global demand.

Duplex Steel UNS S32205 Pipes

What is Duplex Steel UNS S32205 Pipe?

Duplex Steel UNS S32205, also known as Duplex 2205, is a strong and durable stainless steel grade. It has a balanced mixture of ferrite and austenite in the structure. This provide pipe better strength and corrosion resistance than regular austenitic grades. UNS S32205 duplex stainless steel is a trusted choice for demanding pipe systems. The ASTM A790 UNS S32205 material standard cover seamless, and welded pipe forms.
Specification Duplex Steel UNS S32205 Pipes
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UNS S32205 Pipe Key Features & Strengths

Duplex S32205 pipe offers strong protection against pitting and crevice corrosion, even in acidic or salty areas. Its chloride stress corrosion cracking resistance make it a smart choice for tough, high-pressure environments. With high yield and tensile strength — about twice that of SS 304 or 316 — it handle more pressure with thinner walls. That means lighter piping without losing strength. It also offer good duplex 2205 weldability when handled with the right heat and cooling steps. The dual-phase structure add stability, helping the pipe hold shape and last longer in aggressive conditions.
S32205 vs S31803 – What is the Difference?
The main difference between UNS S32205 and S31803 is in its composition. S31803 was the original grade for Duplex 2205, but its wider tolerance ranges caused inconsistent corrosion resistance. To fix this, S32205 was developed with tighter limits on chromium, molybdenum, and nitrogen. This led to better and more reliable PREN values, especially in chloride-heavy or seawater conditions. While both grades share the same base chemistry, duplex steel S32205 delivers more stable performance. It meets all S31803 standards. That’s why duplex 2205 pipe grades comparison usually ends with S32205 as the trusted global choice.

Specifications of Duplex Steel S32205 Pipes

Duplex Steel S32205 Pipes are made to ASTM A790 and other global standards. We provide various schedules, wall thicknesses, and end finish option. Available in seamless and welded type to meet industrial specifications and custom project needs.
Finish
Sizes in Stock

Seamless Pipe OD : ½″ NB – 16″ NB
Welded Pipe OD : ½″ NB – 24″ NB
EFW Pipe Size : 6″ NB – 24″ NB

ASTM Standard
Standard

ASTM A790 ASME SA790

Process
Manufacturing Process

Seamless, ERW, Welded, Fabricated

Form
Form

Round, Square, Rectangular, Hydraulic Etc

Length
Length

Single Random, Double Random & Cut Length.

End Icon
End

Plain End, Beveled End, Treaded

Schedule
Schedule

SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS

Finish
Surface Finish

No. 2B – Mill finish / Matte finish, No. 4 – Brushed finish, No. 8 – Mirror finish, Bright Annealed – Smooth / Slightly reflective, Polished – Smooth / Enhanced corrosion resistance,Mirror – Highly reflective,

Duplex Steel S32205 Pipe Types & Forms

UNS S32205 pipes come in different types and shapes to match various pressure levels and project needs. Based on the welding method, shape, and dimensional fit, users can choose what works best for their system.

Manufacturing Types

  • Duplex S32205 Seamless Pipe
    Duplex S32205 Seamless Pipe

    Made from solid billets without welds. Strong and reliable for high-pressure jobs.

  • Welded Duplex Stainless Steel Pipe
    Welded Duplex Stainless Steel Pipe

    Formed by welding plates or strips. Great for low to medium pressure.

  • Duplex 2205 ERW Pipe
    Duplex 2205 ERW Pipe

    Electric resistance welded for consistent size and shape.

  • EFW (Electric Fusion Welded) Pipe
    EFW (Electric Fusion Welded) Pipe

    Electric fusion welded. Common for large diameter applications.

  • LSAW Pipes
    LSAW Pipes

    Longitudinal submerged arc welded. Ideal for structural and heavy-duty use.

Pipe Forms

  • Round Pipe
    Round Pipe

    Standard circular design used across industries.

  • Square Pipe
    Square Pipe

    Flat-sided pipes suited for frames and structural supports.

  • S32205 Rectangular Pipe
    S32205 Rectangular Pipe

    Used in buildings, machines, and custom layouts.

  • Custom Forms
    Custom Forms

    Oval, thick-wall or tailored designs on request.

These UNS S32205 pipe types and forms ensure you get the right fit for any technical need.
Contact Midland Alloys Inc. for Your Duplex UNS S32205 Pipes Needs

Contact us today to discuss how Duplex UNS S32205 Pipes 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.

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Technical Details & Delivery Condition

Duplex 2205 material include a balanced mix of chromium, nickel, molybdenum and nitrogen. This precise blend give pipe strength and corrosion resistance. The chart reflects typical ASTM A790 S32205 composition ranges for reliable performance.

GradeNiCrMoMnSiCNSPFe
MIN4.522.03.0–––0.14–––
MAX6.523.03.52.01.00.030.20.020.03Balance

Duplex S32205 mechanical properties include high yield and tensile strength which are mentioned below. These values make it ideal for high-pressure systems where uns s32205 tensile strength and ductility matter.

GradeDensityMelting PointYield Strength (0.2% Offset)Tensile StrengthElongation
7.8 g/cm³1350 °C (2460 °F)Psi – 80,000 , MPa – 550Psi – 116,000 , MPa – 80015 %

The UNS S32205 equivalent grade includes worldwide standards, grade titles, and UNS designations. This allows for easy comparison of ASTM A790 S32205 with EN 1.4462 and other global material equivalents.

STANDARDWERKSTOFF NR.UNS
Duplex 22051.4462S32205

Duplex S32205 pipe dimensions follow to ASME B36.10M and B36.19M specifications to ensure compatibility with most global systems. Sizes vary from ½” NB to 24″ NB, with different schedules and wall thicknesses. Heavy-wall and custom size options are also available.

Nominal Pipe Size
up to 4 = ± 0.79 mm | 5 thru 8 = + 1.58 mm / – 0.79 mm
10 thru 18 = + 2.37 mm / – 0.79 mm | 20 thru 24 = + 3.18 mm / – 0.79 mm
Wall Thickness
All Diameters = -12.5%
+ tolerance not specified		Length
+ 6.40 mm / – 0 mm		Weight
Weight = + 10% / – 1.5%

Duplex S32205 pipe size chart include nominal sizes, outer diameters, and wall thicknesses from SCH 10S to SCH XXS. The chart help you choose the right uns s32205 pipe dimensions for your system with custom sizes also available on request.

WallSizes (O.D.)
.0101/16″, 1/8″, 3/16″
.0201/16″, 1/8″, 3/16″, 1/4″, 5/16″, 3/8″
.0121/8″
.0161/8″, 3/16″
.0281/8″, 3/16″, 1/4″, 5/16″, 3/8″, 1/2″, 3/4″, 1″, 1 1/2″, 2″
.0351/8″, 3/16″, 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 1/6″, 5/8″, 3/4″, 7/8″, 1″, 1 1/4″, 1 1/2″, 1 5/8″, 2″, 2 1/4″
.0493/16″, 1/4″, 5/16″, 3/8″, 1/2″, 1/6″, 5/8″, 3/4″, 7/8″, 1″, 1 1/8″, 1 1/4″, 1 1/2″, 1 5/8″, 2″, 2 1/4″
.0651/4″, 5/16″, 3/8″, 1/2″, 1/6″, 5/8″, 3/4″, 7/8″, 1″, 1 1/4″, 1 1/2″, 1 5/8″, 1 3/4″, 2″, 2 1/2″, 3″
.0831/4″, 3/8″, 1/2″, 5/8″, 3/4″, 7/8″, 1″, 1 1/4″, 1 1/2″, 1 5/8″, 1 7/8″, 2″, 2 1/2″, 3″
.0951/2″, 5/8″, 1″, 1 1/4″, 1 1/2″, 2″
.1091/2″, 3/4″, 1″, 1 1/4″, 1 1/2″, 2″
.1201/2″, 5/8″, 3/4″, 7/8″, 1″, 1 1/4″, 1 1/2″, 2″, 2 1/4″, 2 1/2″, 3″
.1253/4″, 1″, 1 1/4″, 1 1/2″, 2″, 3″, 3 1/4″
.1341″
.2503″
.3753 1/2″

Duplex & Super Duplex Steel Pipes Grades We Offer

Round Pipes

Duplex Steel Pipes

Pipes

Duplex Steel UNS S31803 Pipes

Steel Pipes

Duplex Steel UNS S32205 Pipes

Welded Pipes

Super Duplex Steel Pipes

EFW Pipes

Super Duplex Steel UNS S32750 Pipes

ERW Pipes

Super Duplex Steel UNS S32760 Pipes

Manufacturing Process of Duplex S32205 Pipes

The duplex S32205 pipe manufacturing process follows ASTM A790 / ASME SA790 standards for both seamless and welded types. To achieve an accurate dimension and finish, seamless pipes are made from solid billets that have been hot-pierced and extruded before being cold drawn or rolled. Welded pipes are made from hot or cold-rolled stainless steel strips that are prepared at the edges before being welded using ERW or EFW processes and then heat treated with solution annealing. After welding or shaping all pipes are pickled, descaling and straightened to ensure that the surface and dimensions satisfy quality standards. Inspection, marking, end-capping and safe packing for shipment are the final processes.
Round Bar

Round Bar

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Analytic

Analytic

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Cut to Length

Cut to Length

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Centering

Centering

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Heating

Heating

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Perforation

Perforation

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Inspection of Size

Inspection of Size

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Pickling

Pickling

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Inspection of Surface

Inspection of Surface

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Lubricating

Lubricating

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Cold Drawing (Cold Rolling)

Cold Drawing (Cold Rolling)

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Degreasing

Degreasing

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Annealing

Annealing

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Straightening

Straightening

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Cut

Cut

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Pickling / Passivating

Pickling / Passivating

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Inspection

Inspection

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Analytic

Analytic

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Marking

Marking

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Packing & Shipping

Packing & Shipping

Applications of Duplex Steel S32205 Pipes

Duplex Steel S32205 Pipes work well in tough, corrosive environments, especially where chloride stress corrosion cracking is a concern. In the oil and gas sector, they are used for offshore platforms, subsea lines, and risers. Chemical and petrochemical plants use pipe to move acids and caustics. In power plants, these pipes are used for heat exchangers and condenser tubes. Marine and desalination systems use these pipes for seawater cooling and ballast lines. In pulp and paper mills, duplex steel 2205 pipes handle bleaching chemicals and black liquor. Food and pharmaceutical plants install them in washdown zones and strong sanitary system. These pipes are trusted for their strength, pressure pipe tolerance, and weldability. They are utilized for both structural and fluid-carrying roles.
Offshore Industry
Nuclear Industries
Refineries
Ship Building
Aerospace
Pharmaceutical

Surface Finishes & Customization Options

Duplex S32205 pipe surface finish options vary based on where the pipe will be used—industrial plants, marine systems, or clean environments like food and pharma. Standard choices include mill finish (as-produced), pickled and passivated for better corrosion resistance and polished finishes on request for hygiene or appearance. Customization is available to match exact project needs. Pipes can be cut to length, made with specific outer diameters or wall thickness, and supplied with beveled, threaded, or plain ends. Special marking, export labeling, and secure packaging is done on request for global delivery or site-ready use.

Why Choose Midland Alloys Inc. for Duplex S32205 Pipes

Midland Alloys Inc. is a trusted certified supplier of Duplex 2205 pipes, with 10 years of experience in meeting global industrial demands. We serve critical sectors with a strong focus on quality, backed by ISO 9001:2015, PED 2014/68/EU, and EN 10204 3.1/3.2 certifications. We also support third-party inspections from TÜV, BV, SGS, and DNV. Our team work closely with EPC contractors, engineering firms, marine operators, and chemical plants. We ensure prompt delivery, proper documentation, and export compliance. Our dependability and service have resulted in long-term relationships in the Middle East, Europe, and Southeast Asia.

Frequently Asked Questions About Duplex S32205 pipes

S32205 has tighter composition control which ensure more consistent corrosion resistance than S31803 especially in chloride environments.

Yes. It has high resistance to chloride stress corrosion cracking and pitting, making it ideal for seawater and brine systems.

Pipes are available as per ASTM A790 / ASME SA790 in seamless, welded, ERW, EFW, and LSAW forms.

Yes. They offer higher strength and better corrosion resistance in aggressive or chloride-rich conditions.

Seamless: ₹700–₹900/kg. Welded: ₹550–₹700/kg. Prices vary based on size, type, and order quantity.

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