Duplex 2101 Pipe
Duplex 2101 Pipe is a high-performance stainless steel pipe known for its exceptional strength and corrosion resistance. This material belongs to the duplex stainless steel family, characterized by a balanced microstructure of austenitic and ferritic phases. Its unique composition typically includes low carbon content, with chromium, nickel, and molybdenum additions, making it suitable for demanding industrial environments. These pipes are widely used in sectors requiring durability and resistance to stress corrosion cracking.
Manufactured as seamless or welded pipes, these products meet stringent international standards such as ASTM A789 and A790, ensuring reliability and quality. Their dual-phase structure provides superior tensile strength compared to standard austenitic stainless steels, while maintaining excellent weldability and formability. The chemical composition typically features around 21% chromium, 1.5% nickel, and 0.3% molybdenum, offering enhanced resistance to chloride-induced corrosion.
These pipes are extensively utilized in chemical processing, oil and gas, marine, and desalination plants, where resistance to harsh environments is critical. Their ability to withstand high pressure and temperatures makes them ideal for pipelines, heat exchangers, and structural applications. The combination of mechanical strength and corrosion resistance reduces maintenance costs and extends the service life of installations.
Producers and exporters of these duplex stainless steel pipes ensure they comply with global quality certifications and provide detailed mill test reports to facilitate international trade. The pipes are available in various sizes, thicknesses, and finishes, tailored to meet specific project requirements. Rigorous inspection and testing protocols guarantee consistent performance across different batches, making them a preferred choice for industrial buyers worldwide.
With growing demand in emerging markets and established industrial hubs, these pipes are strategically stocked and shipped from key manufacturing regions, ensuring timely delivery and supply chain efficiency. Their export readiness, combined with competitive pricing and technical support, positions them as a reliable solution for companies seeking durable and cost-effective piping solutions in challenging operational conditions.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex 2101 Pipe Are Preferred by Global Buyers
- ✔ Factory Pricing: Direct manufacturer rates with bulk stock
- ✔ Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- ✔ Export-Ready: Sea-worthy packaging for on-time delivery
- ✔ Fast RFQs: Quick quotes for custom sizes & quantities
- ✔ Traceability: 100% heat number tracking from raw material to finished product
Trusted by industries like oil & gas, petrochemicals, power, marine, and heavy engineering.
- Manufacturing Capacity: 500 MT / Month
- Export Experience: 15+ Years
- Countries Served: 50+
- Annual Export Volume: 5,500 MT
Table of Contents
- 1. What is Duplex 2101 Pipe
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex 2101 Pipe
- 4. Why Global Buyers Source from Ragnar Metals and Tubes
- 5. Features
- 6. Technical Overview
- 7. Specifications
- 8. Available Grades
- 9. Available Sizes
- 10. Chemical Properties
- 11. Mechanical Properties
- 12. Physical & Thermal Properties
- 13. Electrical Resistivity
- 14. Equivalent Grades
- 15. Manufacturing Process & Heat Treatment
- 16. Various Types
- 17. Applications & Uses
- 18. Industries We Serve
- 19. Latest Price List
- 20. MOQ & Payment Terms
- 21. Export Packaging & Shipping
- 22. Cities We Supply in India
- 23. Countries We Export Worldwide
- 24. Our Certifications
- 25. Quality Inspection & Testing
- 26. Our Other Product Types
- 27. People Also Search For
- 28. Frequently Asked Questions
- 29. About Ragnar Metals and Tubes
How to Choose the Right Duplex 2101 Pipe
India is home to hundreds of manufacturers ranging from small job shops to large ISO-certified exporters. International and domestic buyers typically evaluate manufacturers based on quality compliance, production capacity, export experience, and pricing transparency.
- Certification & international standards (ASME, ASTM, EN)
- Manufacturing capability vs trading activity
- Export documentation & inspection support
- Stock availability & lead time reliability
- Past supply experience in oil & gas, EPC & heavy industries
Comparison Factors Among Duplex 2101 Pipe
| Evaluation Factor | Small Local Suppliers | Trading Companies | ISO-Certified Manufacturers |
|---|---|---|---|
| Manufacturing Control | Limited | None | Full in-house / audited partners |
| International Standards | Basic | Depends on source | ASME / ASTM / EN |
| Inspection & MTCs | Limited | Inconsistent | EN 10204 3.1 / 3.2 |
| Export Experience | Low | Medium | 50+ countries |
| Risk for EPC Projects | High | Medium | Low |
International buyers typically prefer ISO-certified manufacturers for large-scale or critical applications due to better quality control, documentation, and lower project risk.
Why Global Buyers Choose Ragnar Metals and Tubes
Ragnar Metals and Tubes is a trusted ISO 9001:2015 certified manufacturer and global exporter of ferro alloys and metal products, supplying consistent, high-quality materials to customers across USA, UK, Europe, Middle East, Africa, and Asia-Pacific. Our focus on quality assurance, cost efficiency, and on-time delivery makes us a preferred sourcing partner for international buyers.
| Key Advantage | Buyer Benefit |
|---|---|
| ISO 9001:2015 Certified Manufacturing | Consistent quality with documented QA systems and process control |
| ASME / ASTM / EN Compliant Products | Globally accepted standards with EN 10204 3.1 / 3.2 MTCs |
| Lower Manufacturing & Sourcing Costs | Save up to 15–20% compared to European suppliers |
| Favorable Exchange Rate Advantage | Reduced landed cost for international importers |
| In-House Testing & Inspection Facilities | Strict chemical, mechanical & dimensional quality checks |
| Bulk Stock & High Production Capacity | Fast order fulfillment and stable supply for large projects |
| Custom Sizes & Drawing-Based Manufacturing | Products manufactured exactly to buyer specifications |
| Export-Grade Packaging & Global Logistics | Sea-worthy packing, palletization & worldwide shipping support |
| Faster Global Shipping Routes | Optimized logistics for Middle East, Africa & Southeast Asia |
| Technical & After-Sales Support | Project assistance, documentation & responsive RFQ handling |
| Trusted by Global Steel & EPC Companies | Proven export experience across 50+ countries |
Features of Duplex 2101 Pipe
- ✔ Excellent corrosion resistance in a variety of environments
- ✔ High strength-to-weight ratio, ensuring durability
- ✔ Good weldability, facilitating easy fabrication
- ✔ Superior toughness at low temperatures
- ✔ Resistance to stress corrosion cracking
- ✔ Cost-effective compared to higher alloyed stainless steels
Technical Overview of Duplex 2101 Pipe
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex 2101 Pipe | 22% Cr, 5% Ni, 0.15% N, balance Fe | Used in various applications including oil and gas, chemical processing, and marine environments | ASTM A790, ASME SA790, EN 10216-5 |
| Duplex 2101 Pipe | 22% Cr, 5% Ni, 0.15% N, balance Fe | Designed for high strength and corrosion resistance | ISO 15156, NACE MR0175 |
| Duplex 2101 Pipe | 22% Cr, 5% Ni, 0.15% N, balance Fe | Suitable for applications requiring good weldability and formability | API 5L, ASTM A53 |
Specifications Table
| Material | Duplex Stainless Steel 2101 |
|---|---|
| Grades | UNS S32101 |
| Standard | ASTM A789 / A790 |
| Size Range | 1/2" to 24" (DN15 to DN600) |
| Length | Standard lengths of 20 ft (6 m) or custom lengths available |
| Form | Seamless and Welded |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2101 Pipe | Fe, 22% Cr, 2.5% Ni, 0.15% N | Oil and gas, chemical processing, pulp and paper |
| Duplex 2101 Pipe | Fe, 21% Cr, 3% Ni, 0.12% N | Marine environments, wastewater treatment |
| Duplex 2101 Pipe | Fe, 23% Cr, 4% Ni, 0.16% N | Structural applications, desalination plants |
| Duplex 2101 Pipe | Fe, 24% Cr, 2% Ni, 0.10% N | Pressure vessels, heat exchangers |
| Duplex 2101 Pipe | Fe, 20% Cr, 5% Ni, 0.20% N | Pharmaceutical manufacturing, food processing |
Available Sizes of Duplex 2101 Pipe (MM)
| Size (MM) | Size (MM) |
|---|---|
| 20 | 25 |
| 32 | 40 |
| 50 | 65 |
| 80 | 100 |
| 125 | 150 |
| 200 | 250 |
| 300 | 350 |
| 400 | 450 |
| 500 | 600 |
| 700 | 800 |
Chemical Properties of Duplex 2101 Pipe
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 20.0 - 22.0 |
| Nickel (Ni) | 3.0 - 5.0 |
| Molybdenum (Mo) | 0.1 - 0.5 |
| Manganese (Mn) | 5.0 - 7.0 |
| Silicon (Si) | 0.5 - 1.0 |
| Carbon (C) | 0.03 max |
| Sulfur (S) | 0.02 max |
| Iron (Fe) | Balance |
Mechanical Properties of Duplex 2101 Pipe
| Property | Value |
|---|---|
| Tensile Strength | 620 MPa |
| Yield Strength | 450 MPa |
| Elongation | 25% |
| Hardness (HB) | 250 HB |
| Impact Toughness (Charpy V-notch) | 50 J (at -40°C) |
Duplex 2101 Pipe – Physical & Thermal Properties
Density of Duplex 2101 Pipe
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.1 g/cm³ | 0.256 lb/in³ |
Melting Point of Duplex 2101 Pipe
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1420 - 1450 °C | 2600 - 2642 °F |
Specific Heat of Duplex 2101 Pipe
| Specific Heat of Duplex 2101 Pipe | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Room Temperature |
| 600 | 100 - 300 | Medium Temperature |
| 700 | 300 - 600 | High Temperature |
Electrical Resistivity of Duplex 2101 Pipe
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.70 | 20 | As Rolled |
| 0.73 | 100 | |
| 0.76 | 200 | |
| 0.80 | 300 | |
| 0.85 | 400 | |
Equivalent of Duplex 2101 Pipe
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| EN 1.4162 | Duplex 2101 | S32101 |
| AISI | Duplex 2101 | S32101 |
Manufacturing Process & Heat Treatment of Duplex 2101 Pipe
Annealing
The annealing process for Duplex 2101 pipe involves heating the steel to a temperature range of 1020-1100°C, followed by controlled cooling. This process helps to relieve internal stresses, improve ductility, and enhance the overall mechanical properties of the material.
Forging
Forging of Duplex 2101 is performed at elevated temperatures, typically between 1100-1200°C. This process enhances the mechanical properties by refining the grain structure and improving the strength and toughness of the material.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1020-1100 | Oil | To increase hardness and strength |
| Tempering | 400-800 | Air | To reduce brittleness and improve toughness |
| Stress Relieving | 300-600 | Air | To relieve residual stresses from the manufacturing process |
The combination of these processes ensures that Duplex 2101 pipe achieves optimal mechanical properties, making it suitable for various industrial applications, including those in corrosive environments.
Various Types
Duplex 2101 Pipe - Schedule 40
- Nominal Diameter: 2 inch
- Condition: Hot Finished
- Applications: Oil and Gas, Chemical Processing
Duplex 2101 Pipe - Schedule 80
- Nominal Diameter: 3 inch
- Condition: Cold Drawn
- Applications: Water Treatment, Desalination
Duplex 2101 Pipe - Schedule 100
- Nominal Diameter: 4 inch
- Condition: Annealed
- Applications: Heat Exchangers, Pulp and Paper
Duplex 2101 Pipe - Custom Sizes
- Nominal Diameter: Custom
- Condition: Pickled and Passivated
- Applications: Marine Applications, Structural Components
Applications & Uses
- Oil & Gas Industry: Pipelines, process piping, and high-pressure fluid handling systems.
- Petrochemical & Refineries: Reactors, heat exchangers, and chemical processing units.
- Water Treatment Plants: Filtration systems, storage tanks, and corrosion-resistant piping.
- Pharmaceutical Industry: Hygienic piping, sanitary fittings, and cleanroom equipment.
- Food & Beverage: Processing lines, storage vessels, and contamination-free pipelines.
- Automobile & Engineering: Exhaust systems, structural parts, and precision components.
- Power & Energy Sector: Boilers, condensers, and turbine piping systems.
- Marine & Offshore: Shipbuilding, offshore platforms, and coastal infrastructure.
- Construction & Infrastructure: Structural frameworks, bridges, and industrial buildings.
Industries We Serve
Our stainless steel, alloy steel, and high-performance metal products are widely used across the following industries:
Latest Price List of Duplex 2101 Pipe
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Duplex 2101 | 3 mm | $3.50 – $4.00 | ₹290 – ₹330 |
| Duplex 2101 | 6 mm | $3.70 – $4.20 | ₹300 – ₹340 |
| Duplex 2101 | 10 mm | $3.90 – $4.50 | ₹310 – ₹350 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for Duplex 2101 Pipe.
MOQ & Payment Terms
Minimum Order Quantity: 25–100 Kg depending on part size and grade.
Payment Terms: Depending On Grade and Quantity Size
Export Packaging & Shipping
- Seaworthy, fumigated wooden crates with waterproof inner lining
- Palletised packing with clear shipping marks and heat number identification
- Container stuffing supervision with loading photographs available on request
We Exported to 50+ Countries Worldwide
| Global Export Destinations | |||||
|---|---|---|---|---|---|
| United States | Canada | Mexico | United Kingdom | Germany | Netherlands |
| Italy | Spain | South Africa | Australia | India | Korea |
| United Arab Emirates | Saudi Arabia | Qatar | Kuwait | Oman | Bahrain |
| Singapore | Malaysia | Indonesia | Dubai | Riyadh | Dammam |
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards. Below are our key certifications.
GST Registered
ISO 9001:2015
ISO 1002:2018
Udyam MSME Registration
Testing Process & Quality Assurance – Ragnar Metals & Tubes
At Ragnar Metals & Tubes, our testing process ensures the safety, reliability, and performance of stainless steel and alloy steel products supplied for global industrial and infrastructure projects. Each batch is verified from raw material selection to final dispatch under internationally recognized standards including ASTM, ASME, ISO, DIN, and EN.
Detects internal flaws using high-frequency sound waves
Measures yield strength, elongation, and material durability
Evaluates toughness under low-temperature and high-stress conditions
Ensures smoothness, coating quality, and visual compliance
Enhances hardness, strength, and corrosion resistance
Measures resistance to deformation and wear
Documentation & Global Compliance
- ✔ EN 10204 3.1 / 3.2 Mill Test Certificates (MTC)
- ✔ Batch-wise quality traceability and inspection records
- ✔ Third-party inspection by SGS, TUV, Bureau Veritas & Lloyd’s
- ✔ Export documentation support for customs and international shipping
Supporting supply for oil & gas, petrochemical, power generation, marine, infrastructure, and heavy engineering industries worldwide.
Related Products
Explore our full range of stainless steel and alloy steel products including pipes, tubes, fittings, flanges, sheets, plates, spools, fasteners, round bars, and special grades manufactured for industrial, infrastructure, and global export applications.
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Frequently Asked Questions
About Ragnar Metals & Tubes
- ✔ Leading manufacturer, stockist, and exporter of stainless steel and alloy steel products for industrial and infrastructure projects
- ✔ ISO 9001:2015 certified quality management system ensuring consistent product reliability and compliance
- ✔ Specialized in precision pipes, tubes, fittings, flanges, sheets, plates, fasteners, and round bars
- ✔ Modern processing and testing facilities with advanced manufacturing and inspection equipment
- ✔ Custom-engineered solutions based on client drawings and technical specifications
- ✔ Full material traceability with EN 10204 3.1 / 3.2 mill test certification
- ✔ Compliance with ASTM, ASME, DIN, EN, and ISO international standards
- ✔ Trusted global supplier supporting oil & gas, petrochemical, power, marine, and heavy engineering industries