Duplex 2205 Pipe
Rose Metal Industries manufactures, stocks and exports Duplex 2205 Pipes (UNS S32205 / EN 1.4462) engineered for demanding industrial environments. Duplex 2205 is a balanced ferritic-austenitic stainless steel offering high strength and excellent resistance to localized corrosion, chloride stress corrosion cracking and erosion in seawater and chemical process conditions. Our pipes serve critical infrastructure projects across India — particularly in Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry and the Andaman and Nicobar Islands — as well as global EPC and OEM supply chains.
Rose Metal Industries is a leading manufacturer, stockist, and global exporter of Duplex 2205 Pipes, supplying premium-quality material to domestic and international markets. Our supply network is strong across Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry (Pondicherry), and Andaman & Nicobar Islands, ensuring fast delivery and reliable customer support. Duplex 2205 (UNS S32205/UNS S31803) is one of the most widely used duplex grades known for high strength, superior corrosion resistance, and excellent stress corrosion cracking resistance.
Duplex 2205 Pipes are manufactured using high-grade raw material and advanced heat-treatment technology, providing excellent performance in environments containing chlorides, seawater, and acidic conditions. Because of their duplex microstructure, these pipes deliver higher yield strength than standard austenitic stainless steels, making them ideal for offshore structures, chemical processing plants, and marine applications in coastal regions such as Chennai, Visakhapatnam, Bengaluru, Hyderabad, and Port Blair.
Rose Metal Industries exports Duplex 2205 Pipes globally, delivering to countries in the Middle East, Europe, Africa, and Asia. Our products comply with ASTM, ASME, EN, and international quality standards. We offer customization in size, thickness, finishing, and length to meet diverse project requirements. All pipes undergo strict quality checks including PMI testing, mechanical testing, hydro testing, and NDT examinations
Specifications – Duplex 2205 Pipe
- Grade: Duplex 2205 (UNS S32205 / UNS S31803 / EN 1.4462)
- Standards: ASTM A789 / ASTM A790 / ASME SA789 / SA790
- Types: Seamless, Welded, ERW, EFW Pipes
- Ends: Plain End, Beveled End, Threaded
- Form: Round, Hydraulic, Annealed, Pickled
Chemical Composition
| Element | Content (%) |
|---|---|
| Chromium (Cr) | 22.0 – 23.0 |
| Nickel (Ni) | 4.5 – 6.5 |
| Molybdenum (Mo) | 3.0 – 3.5 |
| Nitrogen (N) | 0.14 – 0.20 |
| Manganese (Mn) | ≤ 2.0 |
| Carbon (C) | ≤ 0.03 |
| Silicon (Si) | ≤ 1.0 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 620 MPa |
| Yield Strength | ≥ 450 MPa |
| Elongation | 25% Min |
| Hardness | ≤ 290 HB |
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | S32205 / S31803 |
| EN | 1.4462 |
| WNR | 1.4462 |
| ASTM | 2205 |
Dimension Chart (Typical Range)
| Outside Diameter (mm) | Wall Thickness (mm) |
|---|---|
| 6 mm – 630 mm | 1.0 mm – 40 mm |
| 1/8" – 24" | Sch 5 to Sch XXS |
Applications of Duplex 2205 Pipes
- Oil & Gas Pipelines and Offshore Platforms
- Marine & Shipbuilding Structures (ideal for Andaman & Nicobar coastal conditions)
- Desalination Plants and Seawater Heat Exchangers
- Chemical Processing & Fertilizer Industries in Tamilnadu and Telangana
- Pulp & Paper Industries in Karnataka & Andhra Pradesh
- Structural and Pressure Vessel Fabrication
We maintain a large stock of seamless, ERW, welded, and fabricated Duplex 2205 Pipes in multiple schedules and diameters. This allows industries across Karnataka, Andhra Pradesh, Telangana, and Tamilnadu to procure ready-material for urgent requirements. Duplex 2205 pipes are widely used in desalination plants, oil & gas pipelines, pressure vessels, structural supports, marine engineering, and heat exchangers due to their excellent mechanical strength and corrosion resistance.
With a commitment to global quality standards and customer satisfaction, we continue to serve worldwide industries looking for durable, high-performance and cost-efficient Duplex 2205 Pipes for demanding applications.
Frequently Asked Questions (FAQ)
Q1: What makes Duplex 2205 better than standard stainless steel grades like 304/316?
A: Duplex 2205 offers nearly double the strength of austenitic grades and far superior resistance to pitting, crevice corrosion and chloride stress corrosion cracking. It is ideal for marine, offshore and aggressive chemical environments.
Q2: Do you provide mill test certificates (MTC) for Duplex 2205 Pipes?
A: Yes — Rose Metal Industries provides full MTCs (EN 10204 3.1), along with PMI testing, hydro testing, UT/NDT reports and third-party inspections on request.
Q3: What standards do your Duplex 2205 Pipes comply with?
A: Our Duplex 2205 pipes are manufactured and supplied as per ASTM A789 / ASTM A790 / ASME SA789 / SA790 along with equivalent EN and ISO standards based on customer/project specifications.
Q4: Can you supply custom sizes, wall thicknesses and lengths?
A: Yes — we offer customized OD, thickness, lengths, beveling, polishing and export-grade packaging. Cut-to-size options and fast delivery are available for Tamilnadu, Andhra Pradesh, Karnataka, Telangana, Puducherry and Andaman & Nicobar Islands.
Q5: Where is Duplex 2205 commonly used?
A: Duplex 2205 is widely used in seawater desalination, offshore structures, heat exchangers, pressure vessels, marine pipelines and chemical processing plants due to its excellent corrosion resistance and high mechanical strength.