Duplex 2205 Pipe Silicon Alloy Steel Duplex Stainless Steel Pipe For Chemical Processing

Material Description

Duplex 2205 (UNS S32205 / S31803) is a nitrogen-alloyed duplex stainless steel with an approximately 50/50 austenite–ferrite structure.
It offers:

• About twice the yield strength of 304L/316L

• High resistance to pitting, crevice corrosion and chloride SCC

• Reliable performance in chloride-bearing, mildly sour and mixed acid/alkali chemical media

This makes Duplex 2205 pipe a strong, corrosion-resistant, and cost-effective choice for demanding chemical-processing and offshore systems.

Specifications

• Grades / Designations:

  • UNS: S32205, S31803

  • EN: 1.4462 / X2CrNiMoN22-5-3

  • JIS: SUS329J3L

  • GB: 022Cr22Ni5Mo3N / S22253

• Product Forms:

  • Seamless and welded duplex stainless steel pipe and tube

  • Supply condition: solution-annealed and pickled, cold- or hot-finished

Main Features

1. High strength – Rp0.2 ≥ 450 MPa, Rm ≥ 620 MPa, allowing thinner walls at the same design pressure.

2. Excellent corrosion resistance – high PREN, strong resistance to pitting, crevice corrosion and chloride SCC.

3. Good weldability – suitable for standard welding processes when heat input and interpass temperature are properly controlled.

Our Advantages

• Better than 316L in chlorides
  We support material selection and wall-thickness calculations (2205 vs 316L) to show clear benefits in strength, weight and service life.

• Sour and aggressive service capability
  Pipes can be supplied to meet NACE MR0175 / ISO 15156 and relevant project requirements, including SSC/HIC testing when specified.

• Engineering and project support
  Assistance with WPS/PQR for Duplex 2205, NDE and PMI control, plus customized dimensions, lengths and complete QA/ITP documentation for chemical-processing projects.

Chemical Composition 

Mechanical Properties

Standards

• ASTM / ASME: ASTM A789, ASTM A790, ASTM A928, ASME SA789, SA790

• EN: EN 10216-5, EN 10217-7, EN 10088-3

• GB / NB: GB/T 21833, GB/T 21832, GB/T 12770, GB/T 12771, NB/T 47010

• JIS: JIS G 4303 / 4304 / 4305 / 4317, JIS G 3459, JIS G 3463

• GOST: GOST 5632

• Corrosion / Sour: NACE MR0175 / ISO 15156

Application Fields

• Chemical and petrochemical process piping and headers

• Heat-exchanger and condenser tubes with seawater or high-chloride cooling water

• Columns, absorbers and scrubbers in refineries and chemical plants

• Fire-water, utility-water, brine and seawater lines in coastal and offshore facilities

• Desalination, power-plant FGD, and pulp-and-paper systems where high strength and SCC resistance are required.

Q: Are you trading company or manufacturer ?

A: manufacturer,also can do trading.

Q: How long is your delivery time?

A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,

it is according to quantity.

Q: Do you provide samples? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.

If you have another question, pls feel free to contact with me.