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Quality Seamless Welded 2205 Duplex Stainless Steel Tubing ASTM A790 factory
Quality Seamless Welded 2205 Duplex Stainless Steel Tubing ASTM A790 factory

Seamless Welded 2205 Duplex Stainless Steel Tubing ASTM A790

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

Seamless 2205 Duplex Stainless Steel Tubing
Product Summary
2205 duplex stainless steel pipe offers a balanced combination of high strength and excellent corrosion resistance, making it the preferred choice for industries such as oil & gas, chemical processing, marine engineering, and desalination plants. With a duplex microstructure (approximately 50% ...

Product Details

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Seamless 2205 Duplex Stainless Steel Tubing

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Welded 2205 Duplex Stainless Steel Tubing

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2205 Stainless Steel Tubing ASTM A790
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

2205 duplex stainless steel pipe offers a balanced combination of high strength and excellent corrosion resistance, making it the preferred choice for industries such as oil & gas, chemical processing, marine engineering, and desalination plants.

With a duplex microstructure (approximately 50% austenite + 50% ferrite), 2205 provides nearly twice the yield strength of common austenitic stainless steels like 304 or 316L, while maintaining good weldability and fabricability.

Key Features of 2205 Duplex Steel Pipe
Feature Description
High Yield Strength Minimum 450 MPa (65 ksi) – approximately 2x stronger than 316L
Outstanding Corrosion Resistance Excellent resistance to stress corrosion cracking (SCC), pitting, and crevice corrosion
Chloride Resistance Ideal for seawater, brackish water, and high-chloride environments
Good Weldability Suitable for GTAW, SMAW, and GMAW processes with proper filler metal (e.g., 2209)
Cost-Effective Alternative Lower cost than nickel-based alloys while offering comparable performance
Wide Temperature Range Serviceable from -50°C to 300°C depending on application
Chemical Composition (%, ASTM A789 / A790)
Element Content (%)
Carbon (C) ≤ 0.030
Silicon (Si) ≤ 1.00
Manganese (Mn) ≤ 2.00
Chromium (Cr) 21.0 – 23.0
Nickel (Ni) 4.5 – 6.5
Molybdenum (Mo) 2.5 – 3.5
Nitrogen (N) 0.08 – 0.20
Iron (Fe) Balance
Mechanical Properties (Typical)
Property Value
Tensile Strength ≥ 620 MPa
Yield Strength (0.2% offset) ≥ 450 MPa
Elongation ≥ 25%
Hardness (HRC) ≤ 30
Density 7.8 g/cm³
Standards & Specifications

ASTM A789 – Seamless and welded ferritic/austenitic stainless steel tubing for general service

ASTM A790 – Seamless and welded ferritic/austenitic stainless steel pipe

ASME SA789 / SA790 – Boiler and pressure vessel code

EN 10216-5 / EN 10217-7 – European standards for duplex steel pipes

NACE MR0175 / ISO 15156 – Suitable for sour service environments

Available Sizes
Parameter Range
Outer Diameter (OD) 6.0 mm – 610 mm (1/4″ – 24″)
Wall Thickness (WT) 0.5 mm – 50 mm
Length Customized (up to 12 meters or as required)
Type Seamless / Welded
Industries & Applications for 2205 Duplex Pipe
Industry Typical Applications
Oil & Gas Offshore platforms, subsea pipelines, flowlines, and process piping
Chemical & Petrochemical Heat exchangers, pressure vessels, and reaction tanks
Marine & Shipbuilding Seawater cooling systems, ballast water treatment, and desalination plants
Pulp & Paper Digesters and bleaching systems
Water Treatment Reverse osmosis (RO) plants, high-pressure piping
Construction Bridges, structural components in coastal areas
FAQ – 2205 Duplex Stainless Steel Pipe

Q: What is the difference between 2205 and 316L stainless steel?
A: 2205 offers approximately twice the yield strength of 316L and significantly better resistance to chloride stress corrosion cracking, making it more suitable for marine and chemical applications.

Q: Can 2205 duplex pipe be welded to 316L?
A: Yes, but requires proper filler metal (e.g., 309L or 2209) and qualified welding procedures. We recommend consulting our technical team for specific cases.

Q: Is 2205 duplex stainless steel magnetic?
A: Yes, due to its ferrite phase, 2205 is slightly magnetic – unlike fully austenitic grades like 304 or 316.

Q: Do you provide cutting and threading services?
A: Yes, we offer custom cutting, beveling, threading, and grooving to meet your installation requirements.

Request a Quote for 2205 Duplex Stainless Steel Pipe

Tell us your required size, quantity, standard, and delivery port, and we will reply within 24 hours with a competitive price.

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