Duplex Flanges exporter in Kuwait
Duplex Flanges exporter in Kuwait plays a pivotal role in supplying high-quality, corrosion-resistant piping components to various industrial sectors. Manufactured from duplex stainless steel, these flanges offer an excellent combination of austenitic and ferritic stainless steel properties, ensuring superior strength and enhanced resistance to stress corrosion cracking. Ideal for environments exposed to harsh chemicals and high pressure, these flanges are tailored to meet stringent international standards, making them a preferred choice for demanding applications.
These fittings come in various types, including weld neck, slip-on, blind, and threaded flanges, each designed to suit different piping system requirements. The duplex stainless steel material composition, typically containing 22% chromium, 5-6% nickel, and molybdenum, ensures durability and longevity even under aggressive conditions. Their robust mechanical properties, combined with excellent weldability, make them suitable for use in oil and gas, petrochemical, desalination plants, and marine industries prevalent in Kuwait and the surrounding regions.
Exporters based in Kuwait are well-equipped to handle large-scale orders, ensuring timely delivery and adherence to international shipping protocols. The products undergo rigorous quality checks, including dimensional accuracy, pressure testing, and corrosion resistance assessments, to guarantee performance reliability. Customized solutions are also available to cater to specific project requirements, including special dimensions and surface finishes, which further enhance the flanges' adaptability across diverse industrial setups.
With a strategic location and well-established logistics networks, suppliers in Kuwait facilitate efficient export processes to global markets, ensuring seamless integration into clients' supply chains. Their commitment to compliance with international standards such as ASTM, ASME, and EN ensures that the duplex flanges meet global quality benchmarks, making them a trusted source for industrial buyers seeking premium-grade piping components.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex Flanges exporter in Kuwait 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 Kuwait
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex Flanges exporter in Kuwait
- 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 Kuwait
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 Kuwait
| 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, suitable for aggressive environments
- ✔ Excellent strength-to-weight ratio, reducing overall system weight
- ✔ Superior weldability, ensuring strong and durable connections
- ✔ Versatile applications across various industries, including oil and gas
- ✔ Enhanced durability, leading to lower maintenance costs
- ✔ Customizable sizes and specifications to meet project requirements
Technical Overview of Duplex Flanges
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex Steel Flanges | 22% Chromium, 5% Nickel, 3% Molybdenum | Used in high-pressure applications, oil and gas, and chemical processing | ASTM A182, ASTM A240 |
| Duplex Forged Flanges | 25% Chromium, 7% Nickel, 4% Molybdenum | Ideal for marine environments and high chloride conditions | ASME B16.5, ASME B16.47 |
| Duplex Slip-On Flanges | Duplex 2205: 22% Chromium, 5% Nickel | Commonly used in piping systems, ensuring durability and strength | API 605, ASTM A105 |
Specifications Table
| Material | Duplex Stainless Steel |
|---|---|
| Grades | S31803, S32205 |
| Standard | ASME B16.5, API 605 |
| Size Range | 1/2" to 24" |
| Length | Customizable as per requirements |
| Form | Blind, Slip-on, Weld neck, Threaded |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2205 | 22% Cr, 5% Ni, 3% Mo | Oil and gas, chemical processing, marine applications |
| Duplex 2507 | 25% Cr, 7% Ni, 4% Mo | High chloride environments, desalination plants, pulp and paper |
| Super Duplex 2507 | 25% Cr, 7% Ni, 4% Mo, 0.2% N | Offshore platforms, chemical tanks, heat exchangers |
| Duplex 31803 | 22% Cr, 5% Ni, 3% Mo, 0.17% N | Petrochemical industry, pulp and paper, wastewater treatment |
| Duplex 32750 | 25% Cr, 6.5% Ni, 3.8% Mo, 0.3% N | Oil and gas, marine engineering, chemical processing |
Available Sizes of Duplex Flanges (MM)
| Size (MM) | Size (MM) |
|---|---|
| 20 | 32 |
| 40 | 50 |
| 65 | 80 |
| 100 | 125 |
| 150 | 200 |
| 250 | 300 |
| 350 | 400 |
| 450 | 500 |
| 600 | 800 |
| 1000 | 1200 |
Chemical Properties of Duplex Stainless Steel (UNS S31803)
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.03 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 19.0 - 28.0 |
| Nickel (Ni) | 4.5 - 8.0 |
| Molybdenum (Mo) | 2.5 - 4.0 |
| Nitrogen (N) | 0.08 - 0.20 |
| Iron (Fe) | Balance |
Mechanical Properties of Duplex Stainless Steel
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 - 800 |
| Yield Strength (MPa) | 450 - 600 |
| Elongation (% in 50 mm) | 25 - 40 |
| Hardness (Brinell) | 250 - 330 |
| Impact Toughness (J at -40°C) | ≥ 40 |
Duplex Stainless Steel – Physical & Thermal Properties
Density of Duplex Stainless Steel
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.8 g/cm³ | 0.28 lb/in³ |
Melting Point of Duplex Stainless Steel
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1400 - 1450 °C | 2552 - 2642 °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 |
| 580 | 100 - 400 | Solid |
| 700 | 400 - 800 | Solid |
Electrical Resistivity of Duplex Stainless Steel
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.72 | 20 | As-Welded |
| 0.75 | 100 | |
| 0.78 | 200 | |
| 0.80 | 300 | |
| 0.82 | 400 | |
Equivalent of Duplex Flanges
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A182 | 1.4462 | S31803 |
| ASTM A240 | 1.4410 | S32750 |
Manufacturing Process & Heat Treatment of Duplex Flanges
Annealing
The annealing process for duplex flanges involves heating the material to a temperature range of 1000°C to 1100°C followed by controlled cooling. This process helps to relieve internal stresses, improve ductility, and enhance the overall microstructure of the steel, ensuring optimal performance in various applications.
Forging
Forging is performed on duplex flanges to shape the material while enhancing its mechanical properties. The process involves heating the steel to a temperature of around 1200°C, followed by shaping it under high pressure. This results in a fine-grained structure that significantly improves strength and toughness.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1000 - 1100 | Oil | To increase hardness and strength |
| Tempering | 600 - 800 | Air | To reduce brittleness and improve toughness |
| Stress Relieving | 500 - 600 | Air | To remove residual stresses from the material |
The combination of these processes ensures that duplex flanges exported from Kuwait meet the highest standards of quality and performance, making them suitable for a wide range of industrial applications.
Various Types
Duplex Stainless Steel Flanges
- Size: 1" to 24"
- Condition: ASTM A815 / A182
- Applications: Oil & Gas, Chemical Processing
Duplex Blind Flanges
- Size: 2" to 30"
- Condition: ASTM A790
- Applications: Water Treatment, Marine Applications
Duplex Weld Neck Flanges
- Size: 1.5" to 36"
- Condition: ANSI B16.5
- Applications: Power Generation, Pulp & Paper
Duplex Socket Weld Flanges
- Size: 1" to 6"
- Condition: ASME SA182
- Applications: Pharmaceutical, Food Processing
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 Flanges | 3 mm | $5.00 – $5.50 | ₹410 – ₹450 |
| Duplex Flanges | 6 mm | $5.20 – $5.70 | ₹425 – ₹465 |
| Duplex Flanges | 10 mm | $5.40 – $5.90 | ₹440 – ₹480 |
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 Kuwait
- Stainless Steel Flanges Exporters in Kuwait
- Metal Flanges Manufacturers in Kuwait
- Duplex Pipe Fittings Exporters in Kuwait
- Industrial Flanges Distributors in Kuwait
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