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Quality High Strength Duplex Stainless Steel Pipe Corrosion Resistant Oil And Gas Tubing factory
Quality High Strength Duplex Stainless Steel Pipe Corrosion Resistant Oil And Gas Tubing factory

High Strength Duplex Stainless Steel Pipe Corrosion Resistant Oil And Gas Tubing

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

High Strength Duplex Stainless Steel Pipe
Product Summary
Duplex stainless steel pipe is manufactured from a family of stainless steels with a two-phase microstructure consisting of approximately equal parts of austenite and ferrite. This unique structure provides a combination of high strength and excellent corrosion resistance that exceeds standard ...

Product Details

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High Strength Duplex Stainless Steel Pipe

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Duplex Stainless Steel Pipe Corrosion Resistant

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Duplex Oil And Gas Tubing
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

Duplex stainless steel pipe is manufactured from a family of stainless steels with a two-phase microstructure consisting of approximately equal parts of austenite and ferrite. This unique structure provides a combination of high strength and excellent corrosion resistance that exceeds standard austenitic grades like 304 and 316.
Our duplex stainless steel pipes offer superior resistance to stress corrosion cracking, pitting, and crevice corrosion, making them ideal for demanding applications in harsh environments.

Product Specifications
ParameterDetails
StandardASTM A790, A928, ASME SA790, EN 10216-5, EN 10217-7
Grades2205 (UNS S31803 / S32205), 2507 (UNS S32750), S32760, 2304 (UNS S32304)
Size (OD)6.0 mm – 610 mm (1/8" – 24")
Wall Thickness0.5 mm – 25.0 mm
Length3000 mm, 6000 mm, random lengths (custom cut available)
ProcessSeamless (cold drawn / cold rolled) or Welded (ERW / EFW)
Surface FinishMill finish, Pickled, Annealed, Polished
Duplex Grades Overview
GradeUNS NumberPREN*Yield Strength (MPa)Best For
2304S3230424 – 26≥ 400Cost effective alternative to 316L
2205S31803 / S3220533 – 35≥ 450Most common duplex grade
2507S32750≥ 41≥ 550Super duplex for extreme conditions
S32760S32760≥ 40≥ 550Super duplex with added tungsten

PREN = Pitting Resistance Equivalent Number (higher value = better pitting resistance)

Chemical Composition (Reference %)
ElementGrade 2205Grade 2507Grade 2304
Carbon (C)≤ 0.030≤ 0.030≤ 0.030
Silicon (Si)≤ 1.00≤ 0.80≤ 1.00
Manganese (Mn)≤ 2.00≤ 1.20≤ 2.50
Phosphorus (P)≤ 0.030≤ 0.035≤ 0.035
Sulfur (S)≤ 0.020≤ 0.020≤ 0.020
Chromium (Cr)22.0 – 23.024.0 – 26.021.5 – 24.5
Nickel (Ni)4.5 – 6.56.0 – 8.03.0 – 5.5
Molybdenum (Mo)3.0 – 3.53.0 – 5.00.05 – 0.60
Nitrogen (N)0.14 – 0.200.24 – 0.320.05 – 0.20
Mechanical Properties
GradeTensile Strength (MPa)Yield Strength (MPa)Elongation (%)Hardness (HB)
2205≥ 620≥ 450≥ 25≤ 290
2507≥ 730≥ 550≥ 20≤ 310
2304≥ 600≥ 400≥ 25≤ 290

Note: The values above are for reference only. Please refer to the mill test certificate for actual data.

Key Features

  • High Strength – Approximately twice the yield strength of 304/316 stainless steel

  • Excellent Corrosion Resistance – Superior pitting and crevice corrosion resistance

  • Stress Corrosion Cracking Resistance – Resists SCC in chloride environments

  • Good Weldability – Can be welded with proper procedures

  • High Thermal Conductivity – Better heat transfer than austenitic grades

  • Low Thermal Expansion – Similar to carbon steel

Duplex vs. Austenitic Comparison
PropertyDuplex (2205)Austenitic (304/316)
Yield Strength≥ 450 MPa≥ 205 MPa
Pitting Resistance (PREN)33 – 3518 – 25
Stress Corrosion CrackingExcellentPoor
Thermal ConductivityHigherLower
Thermal ExpansionLowerHigher
CostHigherLower
Thickness Reduction PossibleYes (30-50% thinner)No
Applications

Duplex stainless steel pipe is used in demanding environments where standard stainless steels fail:

Oil & Gas

  • Subsea pipelines and risers

  • Downhole tubing

  • Flow lines and process piping

  • Offshore platform equipment

Chemical & Petrochemical

  • Chemical processing vessels

  • Heat exchangers

  • Reactor piping

  • Acid handling systems

Marine & Desalination

  • Seawater cooling systems

  • Desalination plant piping

  • Shipboard systems

  • Ballast water treatment

Pulp & Paper

  • Digester vessels

  • Bleaching plant piping

  • Black liquor recovery

Power Generation

  • Flue gas desulfurization (FGD) systems

  • Condenser tubing

  • Geothermal power piping

Food & Beverage

  • Brine handling systems

  • Salt processing equipment

Contact Us

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