Duplex Flanges exporter in UAE
Duplex Flanges exporter in UAE offers premium quality flanges crafted from duplex stainless steel, known for its exceptional strength and corrosion resistance. These flanges are engineered to meet stringent industrial standards, making them ideal for demanding environments where durability and reliability are paramount. Manufactured using advanced techniques, the product line includes weld neck, slip-on, blind, and threaded flanges, tailored to suit various piping systems.
The duplex stainless steel material combines the benefits of austenitic and ferritic stainless steels, providing enhanced resistance to chloride-induced stress corrosion cracking and excellent mechanical properties. This makes the flanges particularly suitable for offshore oil and gas installations, chemical processing plants, and desalination units where exposure to harsh chemicals and saline conditions is common.
Designed to align with international specifications such as ASTM A182, ASME B16.5, and EN standards, the flanges ensure compatibility with global piping systems and facilitate seamless integration. Precision machining and rigorous quality control processes guarantee tight dimensional tolerances, optimal sealing performance, and long service life, critical factors for industrial applications demanding high safety and efficiency.
Export readiness is a key focus, with packaging tailored to protect the flanges during transit and handling. The supplier’s logistics network in the UAE enables timely delivery to international markets, supported by comprehensive documentation including material test certificates, third-party inspection reports, and compliance certifications. This ensures smooth customs clearance and adherence to client specifications worldwide.
Industrial buyers seeking robust, corrosion-resistant connection solutions will find these duplex stainless steel flanges an excellent choice for maintaining operational integrity and reducing maintenance costs. Their versatility across multiple sectors and proven performance under extreme conditions underscore their value as a critical component in modern industrial infrastructure.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex Flanges exporter in UAE 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 Flanges exporter in UAE
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex Flanges exporter in UAE
- 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 Flanges exporter in UAE
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 Flanges exporter in UAE
| 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 Flanges
- ✔ High corrosion resistance
- ✔ Excellent strength-to-weight ratio
- ✔ Superior weldability and formability
- ✔ High thermal conductivity
- ✔ Cost-effective for various applications
- ✔ Available in various sizes and pressure ratings
Technical Overview of Duplex Flanges
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex Stainless Steel Flanges | 22% Chromium, 5% Nickel, 3% Molybdenum | Used in high-pressure and high-temperature applications | ASTM A182, ASME B16.5 |
| Duplex Pipe Flanges | 25% Chromium, 7% Nickel, 4% Molybdenum | Ideal for chemical processing and oil & gas industries | ASTM A240, ASME B16.47 |
| Duplex Blind Flanges | 22% Chromium, 5% Nickel, 3% Molybdenum | Used to seal the end of a piping system | ASTM A182, ASME B16.5 |
Specifications Table
| Material | Duplex Stainless Steel |
|---|---|
| Grades | UNS S31803, UNS S32205 |
| Standard | ASTM A182, ASME B16.5 |
| Size Range | 1/2" to 24" |
| Length | Custom lengths available |
| Form | Weld Neck, Slip-On, Blind |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2205 | 22% Chromium, 5% Nickel, 3% Molybdenum | Oil and gas, chemical processing, marine applications |
| Duplex 2507 | 25% Chromium, 7% Nickel, 4% Molybdenum | Desalination plants, pulp and paper, offshore oil platforms |
| Super Duplex 32750 | 25% Chromium, 7% Nickel, 4% Molybdenum, 0.3% Nitrogen | High chloride environments, chemical processing |
| Duplex Duplex 31803 | 22% Chromium, 5% Nickel, 3% Molybdenum, 0.18% Nitrogen | Marine applications, wastewater treatment |
| Duplex 2304 | 23% Chromium, 4% Nickel | Food processing, pharmaceuticals, desalination |
Available Sizes of Duplex 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 Stainless Steel Flanges
| Element | Composition (%) |
|---|---|
| Iron (Fe) | 60.0 - 70.0 |
| Chromium (Cr) | 18.0 - 28.0 |
| Nickel (Ni) | 4.5 - 8.0 |
| Molybdenum (Mo) | 3.0 - 5.0 |
| Manganese (Mn) | 1.0 - 2.0 |
| Silicon (Si) | 0.5 - 1.0 |
| Sulfur (S) | ≤ 0.03 |
| Phosphorus (P) | ≤ 0.03 |
Mechanical Properties of Duplex Stainless Steel Flanges
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 - 800 |
| Yield Strength (MPa) | 450 - 600 |
| Elongation (%) | 25 - 40 |
| Hardness (HB) | 200 - 300 |
| Impact Toughness (J) | 50 (at -40°C) |
Duplex Stainless Steel – Physical & Thermal Properties
Density of Duplex Stainless Steel
| Property | Metric | Imperial |
|---|---|---|
| Density | 7,800 kg/m³ | 0.282 lb/in³ |
Melting Point of Duplex Stainless Steel
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1,300 - 1,400 °C | 2,372 - 2,552 °F |
Specific Heat of Duplex Stainless Steel
| Specific Heat of Duplex Stainless Steel | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Solid |
| 550 | 100 - 200 | Solid |
| 600 | 200 - 300 | Solid |
Electrical Resistivity of Duplex Steel Flanges
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 70 | 20 | As Rolled |
| 75 | 100 | |
| 80 | 200 | |
| 85 | 300 | |
| 90 | 400 | |
Equivalent of Duplex Flanges
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A790 | 1.4462 | S32205 |
| EN 10088-3 | X2CrNiMoN22-5-3 | S31803 |
Manufacturing Process & Heat Treatment of Duplex Flanges
Annealing
Annealing of duplex flanges involves heating the material to a temperature range of 1020-1100°C, followed by a controlled cooling process. This treatment helps to relieve internal stresses, improve ductility, and enhance the overall mechanical properties of the duplex stainless steel.
Forging
The forging process for duplex flanges includes heating the steel to approximately 950-1200°C and then shaping it through mechanical deformation. This method improves the grain structure and ensures high strength and durability in the final product.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1050-1150 | Oil or Water | Increase hardness and strength |
| Tempering | 600-800 | Air | Reduce brittleness and enhance toughness |
| Stress Relieving | 300-600 | Air | Minimize residual stresses |
The combination of these processes ensures that duplex flanges meet the stringent requirements for strength, corrosion resistance, and durability necessary for various industrial applications.
Various Types
Duplex Steel Slip-On Flanges
- Dimensions: 1/2" to 24"
- Condition: ASTM A790
- Applications: Oil and gas, chemical processing
Duplex Steel Weld Neck Flanges
- Dimensions: 1" to 30"
- Condition: ASTM A182
- Applications: Power generation, water treatment
Duplex Steel Blind Flanges
- Dimensions: 3/4" to 36"
- Condition: ASTM A240
- Applications: Piping systems, pressure vessels
Duplex Steel Socket Weld Flanges
- Dimensions: 1/2" to 10"
- Condition: ASTM A182
- Applications: High-pressure systems, hydraulic applications
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 Flanges
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Duplex 2205 | 3 mm | $5.00 – $6.00 | ₹410 – ₹492 |
| Duplex 2205 | 6 mm | $4.80 – $5.80 | ₹393 – ₹475 |
| Duplex 2205 | 10 mm | $4.50 – $5.50 | ₹368 – ₹450 |
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 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 Steel Flanges Suppliers in UAE
- Stainless Steel Flanges Exporters in UAE
- Carbon Steel Flanges Manufacturers in UAE
- Pipe Flanges Exporters in UAE
- Industrial Flanges Suppliers in UAE
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