Duplex 2101 Flanges manufacturer
Duplex 2101 Flanges manufacturer offers high-quality, corrosion-resistant flanges made from Duplex 2101 stainless steel, a super duplex alloy known for its excellent strength and durability. These flanges are designed to provide robust performance in demanding industrial environments, combining the benefits of both ferritic and austenitic stainless steel grades. The material's enhanced resistance to stress corrosion cracking and pitting makes it ideal for harsh applications, especially in chemical processing, oil and gas, and marine industries.
Our duplex flanges come in various types, including weld neck, slip-on, blind, and threaded flanges, catering to diverse piping system requirements. Manufactured to meet international standards such as ASTM A182 and ASME B16.5, these components ensure compatibility and reliability in critical installations. The precise dimensional accuracy and surface finish of the flanges contribute to leak-proof connections and extended service life, minimizing maintenance costs.
The superior mechanical properties of Duplex 2101 flanges, such as high tensile strength and excellent toughness, allow them to withstand elevated pressures and temperatures. Their dual-phase microstructure provides an optimal balance between strength and corrosion resistance, which is particularly beneficial for offshore platforms and chemical reactors. Additionally, these flanges exhibit good weldability, facilitating seamless integration into existing pipeline systems.
With a focus on export readiness, our manufacturing facilities adhere to stringent quality control protocols, including comprehensive testing for chemical composition, mechanical properties, and non-destructive examinations. Packaging and documentation are tailored to meet international shipping standards, ensuring safe and timely delivery worldwide. Industrial buyers can rely on consistent product quality, competitive pricing, and prompt customer support for large-scale projects and ongoing supply contracts.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex 2101 Flanges manufacturer 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 Flanges manufacturer
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex 2101 Flanges manufacturer
- 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 Flanges manufacturer
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 Flanges manufacturer
| 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 Flanges
- ✔ Excellent corrosion resistance in chloride environments
- ✔ High strength-to-weight ratio
- ✔ Superior weldability compared to traditional stainless steels
- ✔ Good impact toughness at low temperatures
- ✔ Cost-effective alternative to higher alloyed duplex grades
- ✔ Available in a variety of sizes and specifications
Technical Overview of Duplex 2101 Flanges
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex 2101 Flanges | 22% Cr, 5% Ni, 0.2% N, balance Fe | Used in various industrial applications requiring high strength and corrosion resistance | ASTM A240, ASTM A182 |
| Duplex 2101 Flanges | 22% Cr, 5% Ni, 0.2% N, balance Fe | Ideal for oil and gas, chemical processing, and marine environments | ASME B16.5, ISO 15156 |
| Duplex 2101 Flanges | 22% Cr, 5% Ni, 0.2% N, balance Fe | Recommended for applications subjected to high chloride environments | EN 10088-1, EN 10204 |
Specifications Table
| Material | Duplex 2101 |
|---|---|
| Grades | UNS S32101 |
| Standard | ASTM A240 / A240M |
| Size Range | 1/2" to 24" |
| Length | Customized as per requirements |
| Form | Flanges |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2101 Flanges | Fe, Cr (20-25%), Ni (4.5-6.5%), Mo (0.1-0.5%), N (0.1-0.2%) | Oil and gas, marine, chemical processing, wastewater treatment |
| Duplex 2101 Flanges | Fe, Cr (21%), Ni (5.5%), Mo (0.3%), N (0.14%) | Structural applications, pressure vessels, heat exchangers |
| Duplex 2101 Flanges | Fe, Cr (22%), Ni (5%), Mo (0.3%), N (0.16%) | Pulp and paper, desalination plants, food processing |
| Duplex 2101 Flanges | Fe, Cr (23%), Ni (4.5%), Mo (0.2%), N (0.18%) | Pharmaceuticals, petrochemicals, marine environments |
| Duplex 2101 Flanges | Fe, Cr (20%), Ni (6%), Mo (0.4%), N (0.1%) | Offshore platforms, construction, automotive components |
Available Sizes of Duplex 2101 Flanges (MM)
| Size (MM) | Size (MM) |
|---|---|
| 15 | 20 |
| 25 | 32 |
| 40 | 50 |
| 65 | 80 |
| 100 | 125 |
| 150 | 200 |
| 250 | 300 |
| 350 | 400 |
| 450 | 500 |
| 600 | 800 |
Chemical Properties of Duplex 2101
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 20.0 - 22.0 |
| Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo) | 0.1 - 0.5 |
| Manganese (Mn) | 5.0 - 7.0 |
| Silicon (Si) | 0.5 - 1.0 |
| Carbon (C) | 0.03 max |
| Phosphorus (P) | 0.03 max |
| Sulfur (S) | 0.01 max |
Mechanical Properties of Duplex 2101
| Property | Value |
|---|---|
| Tensile Strength | 600 MPa |
| Yield Strength | 400 MPa |
| Elongation | 25% |
| Hardness (Brinell) | 250 HB |
| Impact Toughness | 50 J at -20°C |
Duplex 2101 Flanges – Physical & Thermal Properties
Density of Duplex 2101 Flanges
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.1 g/cm³ | 0.256 lb/in³ |
Melting Point of Duplex 2101 Flanges
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1425 - 1550 °C | 2600 - 2820 °F |
Specific Heat of Duplex 2101 Flanges
| Specific Heat of Duplex 2101 Flanges | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Room Temperature |
| 600 | 100 - 600 | High Temperature |
| 700 | 600 - 1000 | Very High Temperature |
Electrical Resistivity of Duplex 2101
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.75 | 20 | As-rolled |
| 0.80 | 100 | |
| 0.85 | 200 | |
| 0.90 | 300 | |
| 0.95 | 400 | |
Equivalent of Duplex 2101 Flanges
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| EN 1.4162 | 1.4162 | S32101 |
| AISI | — | S32101 |
Manufacturing Process & Heat Treatment of Duplex 2101 Flanges
Annealing
Annealing of Duplex 2101 flanges involves heating the material to a temperature range of 1000°C to 1100°C, followed by controlled cooling. This process helps in relieving internal stresses, improving ductility, and refining the microstructure, ensuring optimal performance in various applications.
Forging
The forging process for Duplex 2101 flanges is conducted at elevated temperatures between 950°C and 1200°C. This hot working process enhances the mechanical properties of the material by refining the grain structure and increasing strength through deformation. The forged flanges are then cooled slowly to room temperature for further processing.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1020 - 1080 | Water or Oil | Increase hardness and strength |
| Tempering | 400 - 600 | Air | Reduce brittleness and enhance toughness |
| Stress Relieving | 300 - 500 | Air | Minimize residual stresses from manufacturing |
The combination of these processes ensures that Duplex 2101 flanges meet stringent quality standards, providing durability and reliability in various industrial applications.
Various Types
Duplex 2101 Slip-On Flange
- Dimension: 1" to 24" (ANSI B16.5)
- Condition: Hot Finished / Cold Drawn
- Applications: Piping Systems, Oil & Gas, Chemical Processing
Duplex 2101 Weld Neck Flange
- Dimension: 1" to 30" (ANSI B16.5)
- Condition: Annealed
- Applications: High Pressure Systems, Marine Applications
Duplex 2101 Blind Flange
- Dimension: 1" to 36" (ANSI B16.5)
- Condition: Machined Finish
- Applications: End of Pipeline, Pressure Vessel Closure
Duplex 2101 Socket Weld Flange
- Dimension: 1/2" to 4" (ANSI B16.5)
- Condition: Pickled and Passivated
- Applications: Process Piping, Power Generation
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 Flanges
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Duplex 2101 | 3 mm | $2.50 – $3.00 | ₹205 – ₹246 |
| Duplex 2101 | 6 mm | $2.70 – $3.20 | ₹222 – ₹263 |
| Duplex 2101 | 10 mm | $2.90 – $3.40 | ₹238 – ₹282 |
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 Flanges.
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.
People Also Search For
- Duplex 2205 Flanges manufacturer
- Super Duplex 2507 Flanges supplier
- Stainless Steel Flanges manufacturer
- Nickel Alloy Flanges supplier
- Carbon Steel Flanges manufacturer
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