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Quality ASTM A789 2205 Duplex Stainless Steel Precision Pipe Seamless Corrosion Resistant factory
Quality ASTM A789 2205 Duplex Stainless Steel Precision Pipe Seamless Corrosion Resistant factory

ASTM A789 2205 Duplex Stainless Steel Precision Pipe Seamless Corrosion Resistant

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
Tags

Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

2205 Stainless Steel Precision Pipe
Product Summary
ASTM A789 2205 Duplex Seamless Tube Corrosion-Resistant for Hydraulic Process Lines

Product Details

Highlight:

2205 Stainless Steel Precision Pipe

,

Stainless Steel Precision Pipe Seamless
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

ASTM A789 2205 duplex seamless tube is a standard specification for seamless duplex stainless steel tubes intended for general corrosion-resistant and high-strength applications. Grade 2205 (UNS S32205 / S31803) is the most widely used duplex stainless steel, offering approximately twice the yield strength of common austenitic grades like 304 or 316, combined with excellent resistance to chloride stress corrosion cracking (SCC), pitting, and crevice corrosion.

These tubes are ideal for heat exchangers, condensers, instrumentation lines, hydraulic lines, and other critical services in oil & gas, chemical processing, marine, and desalination industries.

Key Specifications
Parameter Range / Details
Standard ASTM A789 / ASME SA789
Manufacturing Type Seamless / Welded
Available Grades UNS S31803, S32205, S32750, S32760, and others
Outside Diameter (OD) 6.0 mm – 610 mm (0.236″ – 24″)
Wall Thickness (WT) 0.5 mm – 30 mm (Average Wall or Minimum Wall)
Length Fixed length or random length (standard 6000 mm)
Delivery Condition Annealed & Pickled (AP), Bright Annealed (BA)
Shape Round, Coiled Tubing
Manufacturing Process Cold Rolling, Cold Drawn
Main Grades & Performance Characteristics
UNS S31803 / S32205 (2205 Duplex Steel)
  • Chemical Composition: Cr 21–23% / 22–23%, Mo 2.5–3.5% / 3.0–3.5%, Ni 4.5–6.5%, N 0.08–0.20%
  • Characteristics: Typical duplex stainless steel offering excellent strength and resistance to chloride stress corrosion cracking. S32205 is often supplied as a dual grade with S31803.
  • Equivalent Grades: EN 1.4462, AISI 2205
  • Applications: Chemical vessels, piping, heat exchangers, seawater systems
UNS S32750 (2507 Super Duplex Steel)
  • Chemical Composition: Cr 24–26%, Mo 3–5%, Ni 6–8%, N 0.24–0.32%
  • Characteristics: Super duplex stainless steel with extremely high pitting and crevice corrosion resistance. PREn (Pitting Resistance Equivalent Number) typically >40.
  • Equivalent Grades: EN 1.4410, SAF 2507, F53
  • Applications: Marine engineering, desalination, oil & gas extraction, sour media
UNS S32760 (Super Duplex Steel)
  • Chemical Composition: Cr 24–26%, Mo 3–4%, Ni 6–8%, N 0.20–0.30%, with Cu and W additions
  • Characteristics: Similar to S32750, with additional copper and tungsten to enhance corrosion resistance in specific environments.
  • Equivalent Grades: EN 1.4501, F55, Zeron 100
  • Applications: Subsea pipelines, seawater pump shafts, chemical processing equipment
Duplex Stainless Steel Equivalent Grades
Steel Name EN Number UNS AISI / Trade Name
X2CrMnNiN21-5-1 1.4162 S32101 2101 LDX
X2CrNiN23-4 1.4362 S32304 2304
X2CrNiMoN12-5-3 1.4462 S31803 / S32205 2205
X2CrNiMoN25-7-4 1.4410 S32750 2507
X2CrNiMoCuWN25-7-4 1.4501 S32760 Zero 100
Chemical Composition (per ASTM A789, wt%)
UNS Designation C ≤ Mn ≤ P ≤ S ≤ Si ≤ Ni Cr Mo N Cu Others
S31803 0.030 2.00 0.030 0.020 1.00 4.5–6.5 21.0–23.0 2.5–3.5 0.08–0.20 — —
S32205 0.030 2.00 0.030 0.020 1.00 4.5–6.5 22.0–23.0 3.0–3.5 0.14–0.20 — —
S32750 0.030 1.20 0.035 0.020 0.80 6.0–8.0 24.0–26.0 3.0–5.0 0.24–0.32 0.50 —
S32760 0.030 1.00 0.030 0.010 1.00 6.0–8.0 24.0–26.0 3.0–4.0 0.20–0.30 0.50–1.00 W 0.50–1.00
Mechanical Properties
Property S31803 / S32205 S32750 / S32760
Tensile Strength (MPa), min 620 800
Yield Strength (MPa), min 450 550
Elongation %, min 25 15
Hardness (HRC), max 30 32
Typical Tube Dimensions (Common Stock Sizes)
OD (mm) WT (mm) Length (m) Application
12.7 1.65 6.0 Instrumentation
19.05 2.11 6.0 Hydraulic lines
25.4 2.77 6.0 Heat exchanger
33.4 3.38 6.0 Process piping
48.3 3.68 6.0 General service
60.3 4.0 6.0 Corrosive service
88.9 5.0 6.0 High-pressure
114.3 6.0 6.0 Structural / process
Applications
Oil & Gas
  • Subsea instrumentation and hydraulic lines
  • Downhole tubing and control lines
  • Process piping and manifolds
  • Heat exchangers and coolers
Chemical Processing
  • Heat exchanger tubes
  • Condenser tubes
  • Reactor and vessel internals
  • Transfer lines for corrosive media
Marine & Desalination
  • Seawater cooling systems
  • Desalination plant tubing
  • Hydraulic and control lines on offshore platforms
Other Industries
  • Pulp and paper processing
  • Food and beverage (certain applications)
  • Pharmaceutical equipment (limited)
Tube Finishes
Finish Description Application
Pickled Oxide scale removed, matte surface General industrial
Annealed Softened, ready for further processing Heat exchangers, forming
Polished Smooth surface finish Instrumentation, food
Bright Annealed Clean, shiny surface Decorative, clean service
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