Duplex Flanges Saudi Arabia
Duplex Flanges Saudi Arabia are essential components in piping systems, known for their exceptional strength and corrosion resistance. Manufactured from duplex stainless steel, these flanges combine the benefits of austenitic and ferritic stainless steels, offering high tensile strength and excellent resistance to stress corrosion cracking. This makes them particularly suitable for challenging environments where durability and reliability are paramount.
Typically available in various types such as weld neck, slip-on, blind, and threaded flanges, these fittings are designed to meet stringent industrial standards including ASTM A182 and ASME B16.5. Their duplex stainless steel composition, often grade S31803 or S32205, ensures superior performance in highly corrosive media, including chloride-rich environments commonly found in oil and gas, petrochemical, and marine applications.
The mechanical properties of these flanges include high yield strength, good toughness, and excellent resistance to pitting and crevice corrosion. Their ability to withstand temperatures up to 300°C while maintaining structural integrity makes them ideal for high-pressure pipelines and processing units. Additionally, surface finishes and precise machining ensure optimal fit and sealing capabilities, reducing maintenance costs and downtime.
Manufacturers in Saudi Arabia are well-equipped for large-scale production and export, adhering to international quality certifications such as ISO 9001 and PED compliance. The country’s strategic location and advanced logistics infrastructure facilitate timely delivery to global markets, especially in the Middle East, Asia, and Europe. Export-ready packaging and thorough quality inspections provide industrial buyers with confidence in product consistency and performance.
In summary, these duplex stainless steel flanges serve critical roles in industries requiring robust, corrosion-resistant connections. Their tailored specifications, coupled with Saudi Arabia’s manufacturing expertise, make them a reliable choice for industrial buyers seeking high-quality piping solutions for demanding applications worldwide.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex Flanges Saudi Arabia 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 Saudi Arabia
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex Flanges Saudi Arabia
- 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 Saudi Arabia
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 Saudi Arabia
| 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
- ✔ Exceptional strength and corrosion resistance
- ✔ High durability, suitable for harsh environments
- ✔ Excellent weldability and formability
- ✔ Cost-effective solution for various applications
- ✔ Lightweight compared to traditional materials
- ✔ Available in a variety of sizes and specifications
Technical Overview of Duplex Flanges
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex Steel Flanges | Fe, Cr (22-25%), Ni (4-7%), Mo (3-5%) | Used in oil and gas, chemical processing, and marine applications | ASTM A182, ASTM A240, ASME B16.5 |
| Duplex Socket Weld Flanges | Fe, Cr (22-25%), Ni (4-7%), Mo (3-5%) | Ideal for high-pressure systems in various industries | ASTM A182, ASTM A240, ASME B16.5 |
| Duplex Blind Flanges | Fe, Cr (22-25%), Ni (4-7%), Mo (3-5%) | Provides a seal for the end of a piping system | ASTM A182, ASTM A240, ASME B16.5 |
Specifications Table
| Material | Duplex Stainless Steel |
|---|---|
| Grades | UNS S31803, UNS S32205 |
| Standard | ASTM A182, ASME SA182 |
| Size Range | 1/2" to 24" |
| Length | Custom lengths available |
| Form | Flanged |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2205 | Fe, 22% Cr, 5% Ni, 3% Mo | Oil and gas, chemical processing, marine applications |
| Duplex 2507 | Fe, 25% Cr, 7% Ni, 4% Mo | Desalination plants, offshore oil and gas production |
| Super Duplex 2507 | Fe, 25% Cr, 7% Ni, 4% Mo, 0.2% N | High chloride environments, chemical processing |
| Duplex 329 | Fe, 27% Cr, 6% Ni, 4% Mo | Pulp and paper industry, waste treatment |
| Duplex 2207 | Fe, 22% Cr, 6% Ni, 3% Mo | Marine applications, chemical processing |
Available Sizes of Duplex Flanges (MM)
| Size (MM) | Size (MM) |
|---|---|
| 15 | 25 |
| 32 | 40 |
| 50 | 65 |
| 80 | 100 |
| 125 | 150 |
| 200 | 250 |
| 300 | 350 |
| 400 | 450 |
| 500 | 600 |
| 700 | 800 |
Chemical Properties of Duplex Flanges
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 22.0 - 24.0 |
| Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo) | 3.0 - 5.0 |
| Manganese (Mn) | 0.5 - 2.0 |
| Silicon (Si) | 0.5 - 1.0 |
| Carbon (C) | 0.03 max |
| Sulfur (S) | 0.01 max |
| Phosphorus (P) | 0.03 max |
Mechanical Properties of Duplex Flanges
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 - 900 |
| Yield Strength (MPa) | 450 - 700 |
| Elongation (%) | 25 - 40 |
| Hardness (HB) | 250 - 300 |
| Impact Toughness (J) | 40 (at -50°C) |
Duplex Flanges Saudi Arabia – Physical & Thermal Properties
Density of Duplex Flanges Saudi Arabia
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.8 g/cm³ | 0.282 lb/in³ |
Melting Point of Duplex Flanges Saudi Arabia
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1400 - 1450 °C | 2552 - 2642 °F |
Specific Heat of Duplex Flanges Saudi Arabia
| Specific Heat of Duplex Flanges Saudi Arabia | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Room Temperature |
| 460 | 100 - 400 | Heating |
| 420 | 400 - 800 | High Temperature |
Electrical Resistivity of Duplex Flanges Saudi Arabia
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.72 | 20 | As Fabricated |
| 0.75 | 100 | |
| 0.78 | 200 | |
| 0.80 | 300 | |
| 0.83 | 400 | |
Equivalent of Duplex Flanges Saudi Arabia
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A182 | 1.4462 | S32205 |
| EN 10088-3 | 1.4501 | S32750 |
Manufacturing Process & Heat Treatment of Duplex Flanges
Annealing
Annealing is a heat treatment process that involves heating the duplex flanges to a specific temperature, followed by a controlled cooling process. This treatment helps to relieve internal stresses, improve ductility, and enhance the overall mechanical properties of the steel. The typical annealing temperature for duplex stainless steels is between 1000°C to 1100°C, depending on the specific alloy composition.
Forging
The forging process for duplex flanges involves shaping the metal using compressive forces, typically through hammering or pressing. This process enhances the mechanical properties of the material, making it stronger and more durable. The flanges are often heated to a temperature range of 1100°C to 1200°C before forging to ensure optimal malleability and workability.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 950 - 1050 | Oil or Water | Increase hardness and strength |
| Tempering | 300 - 600 | Air | Reduce brittleness and improve toughness |
| Stress Relieving | 500 - 700 | Air | Relieve residual stresses from forging and machining |
The manufacturing and heat treatment processes of duplex flanges are crucial in ensuring high-quality products that meet international standards. These processes enhance the mechanical properties and performance of the flanges, making them suitable for various industrial applications.
Various Types
Duplex Stainless Steel Flanges Type 2205
- Dimensions: 1" to 24" (DN25 to DN600)
- Condition: ASTM A182 / ASME SA182
- Applications: Oil & Gas, Chemical Processing, Marine
Duplex Stainless Steel Flanges Type 2507
- Dimensions: 1" to 12" (DN25 to DN300)
- Condition: ASTM A240 / ASME SA240
- Applications: Desalination, Offshore Platforms, Pulp and Paper
Duplex Flanges with Ring Type Joint
- Dimensions: 3" to 30" (DN80 to DN750)
- Condition: ANSI B16.5 / B16.47
- Applications: Pressure Vessels, Heat Exchangers, Refineries
Duplex Blind Flanges
- Dimensions: 1" to 36" (DN25 to DN900)
- Condition: ASTM A240 / ASME SA240
- Applications: Pipeline Closure, Maintenance, and Repair
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 – $6.00 | ₹410 – ₹490 |
| Duplex Flanges | 6 mm | $4.80 – $5.80 | ₹390 – ₹470 |
| Duplex Flanges | 10 mm | $4.50 – $5.50 | ₹370 – ₹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 Pipe Suppliers in Saudi Arabia
- Stainless Steel Flanges Manufacturers in Saudi Arabia
- Nickel Alloy Flanges in Saudi Arabia
- Carbon Steel Flanges Suppliers in Saudi Arabia
- Metal Fabrication Services in Saudi Arabia
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