Duplex 2304 EFW Pipe exporter in USA
Duplex 2304 EFW Pipe exporter in USA specializes in supplying high-quality duplex stainless steel pipes manufactured through the Electric Fusion Welding (EFW) process. These pipes are known for their excellent corrosion resistance, high strength, and superior durability, making them an ideal choice for demanding industrial environments. The Duplex 2304 grade combines the benefits of both austenitic and ferritic stainless steel, offering a balanced microstructure that enhances toughness and resistance to stress corrosion cracking.
Manufactured to meet stringent industry standards, these EFW pipes typically feature precise dimensional tolerances and smooth weld seams, ensuring reliable performance in applications involving high pressure and aggressive chemical exposure. The duplex nature of the alloy provides enhanced mechanical properties, including improved yield strength and fatigue resistance, which are critical for structural integrity in sectors such as oil and gas, chemical processing, and marine engineering.
These pipes are widely used in environments where chloride-induced corrosion and pitting are concerns, such as seawater handling systems, desalination plants, and offshore platforms. The combination of duplex steel’s inherent resistance to stress corrosion and the robust EFW manufacturing process ensures long service life, reducing maintenance costs and downtime for industrial operators. Additionally, the pipes’ weldability and formability make them versatile for custom fabrication and complex pipeline installations.
Export readiness is a key focus, with suppliers in the USA adhering to international quality certifications and providing comprehensive documentation, including material test reports and compliance certificates. This ensures that the pipes meet global standards and are suitable for export to markets worldwide. Efficient logistics and packaging solutions are also implemented to protect the pipes during transit and guarantee timely delivery to customers across different regions.
Industrial buyers looking for duplex stainless steel EFW pipes can rely on experienced exporters in the USA to provide tailored solutions that meet specific project requirements. Whether for large-scale infrastructure projects or specialized industrial applications, these pipes offer a reliable and cost-effective solution backed by rigorous quality control and technical support.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex 2304 EFW Pipe exporter in USA 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 2304 EFW Pipe exporter in USA
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex 2304 EFW Pipe exporter in USA
- 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 2304 EFW Pipe exporter in USA
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 2304 EFW Pipe exporter in USA
| 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 2304 EFW Pipe
- ✔ Excellent corrosion resistance in chloride environments
- ✔ High strength-to-weight ratio, reducing material costs
- ✔ Good weldability, allowing for versatile applications
- ✔ Enhanced resistance to stress corrosion cracking
- ✔ Low thermal expansion, minimizing distortion during fabrication
- ✔ Eco-friendly and sustainable, aligning with green engineering practices
Technical Overview of Duplex 2304 EFW Pipe
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex 2304 EFW Pipe | Fe, Cr (20-23%), Ni (4-6%), Mo (0.5-1%), N (0.08-0.2%) | Used in chemical processing, oil and gas, and marine applications | ASTM A790, ASME SA790, EN 10088-1 |
| Duplex 2304 EFW Pipe | Fe, Cr (20-23%), Ni (4-6%), Mo (0.5-1%), N (0.08-0.2%) | Ideal for applications requiring high strength and corrosion resistance | ASTM A789, ASME SA789, ISO 9445 |
| Duplex 2304 EFW Pipe | Fe, Cr (20-23%), Ni (4-6%), Mo (0.5-1%), N (0.08-0.2%) | Commonly utilized in wastewater treatment and desalination plants | API 5L, ISO 3183 |
Specifications Table
| Material | Duplex Stainless Steel |
|---|---|
| Grades | 2304 |
| Standard | ASTM A789 / A790 |
| Size Range | 1/2 inch to 24 inch |
| Length | Up to 12 meters (40 feet) |
| Form | Electric Fusion Welded (EFW) |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2304 EFW Pipe | Fe, 18% Cr, 4% Ni, 0.2% N | Oil & Gas, Chemical Processing |
| Duplex 2304 EFW Pipe | Fe, 22% Cr, 4% Ni, 0.2% N | Pulp & Paper, Waste Treatment |
| Duplex 2304 EFW Pipe | Fe, 21% Cr, 5% Ni, 0.1% N | Marine Applications, Heat Exchangers |
| Duplex 2304 EFW Pipe | Fe, 23% Cr, 5% Ni, 0.3% N | Pharmaceuticals, Food Processing |
| Duplex 2304 EFW Pipe | Fe, 20% Cr, 4% Ni, 0.2% N | Construction, Structural Applications |
Available Sizes of Duplex 2304 EFW Pipe (MM)
| Size (MM) | Size (MM) |
|---|---|
| 25 | 50 |
| 32 | 65 |
| 40 | 80 |
| 50 | 100 |
| 65 | 150 |
| 80 | 200 |
| 100 | 250 |
| 150 | 300 |
| 200 | 350 |
| 250 | 400 |
Chemical Properties of Duplex 2304
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 18.0 - 20.0 |
| Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo) | 0.5 - 1.0 |
| Manganese (Mn) | 1.0 - 2.0 |
| Silicon (Si) | 0.5 max |
| Carbon (C) | 0.03 max |
| Phosphorus (P) | 0.03 max |
| Sulfur (S) | 0.01 max |
Mechanical Properties of Duplex 2304 EFW Pipe
| Property | Value |
|---|---|
| Tensile Strength | 450 MPa (65 ksi) |
| Yield Strength | 320 MPa (46 ksi) |
| Elongation | 25% |
| Hardness (HB) | 200 |
| Impact Strength (Charpy V-notch) | 40 J (30 ft-lb) at -40°C (-40°F) |
Duplex 2304 EFW Pipe – Physical & Thermal Properties
Density of Duplex 2304 EFW Pipe
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.1 g/cm³ | 0.256 lb/in³ |
Melting Point of Duplex 2304 EFW Pipe
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1400 - 1450 °C | 2552 - 2642 °F |
Specific Heat of Duplex 2304 EFW Pipe
| Specific Heat of Duplex 2304 EFW Pipe | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Solid |
| 550 | 100 - 500 | Solid |
| 600 | 500 - 1000 | Solid |
Electrical Resistivity of Duplex 2304 EFW Pipe
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.75 | 20 | As-Welded |
| 0.76 | 100 | |
| 0.78 | 200 | |
| 0.80 | 300 | |
| 0.82 | 400 | |
Equivalent of Duplex 2304 EFW Pipe
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A240 | 1.4362 | S32304 |
| EN 10088-2 | 1.4362 | S32304 |
Manufacturing Process & Heat Treatment of Duplex 2304 EFW Pipe
Annealing
The annealing process for Duplex 2304 EFW pipes involves heating the steel to a temperature range of 1000°C to 1100°C, followed by controlled cooling. This treatment enhances the ductility and reduces residual stresses, ensuring optimal mechanical properties for the pipe.
Forging
Forging of Duplex 2304 involves shaping the material at elevated temperatures, typically between 900°C and 1200°C. This process refines the grain structure, improves strength, and enhances the overall toughness of the pipes, making them suitable for high-stress applications.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1020 - 1100 | Water or Oil | Increase hardness and strength |
| Tempering | 600 - 800 | Air | Reduce brittleness and improve toughness |
| Stress Relieving | 300 - 600 | Air | Minimize residual stresses after welding |
The combination of these processes ensures that Duplex 2304 EFW pipes exhibit excellent mechanical properties and corrosion resistance, making them ideal for various industrial applications.
Various Types
Duplex 2304 EFW Pipe - Schedule 10
- Dimensions: 2" to 12" Diameter
- Condition: Annealed and Pickled
- Applications: Chemical Processing, Oil & Gas
Duplex 2304 EFW Pipe - Schedule 40
- Dimensions: 2" to 16" Diameter
- Condition: Hot Finished
- Applications: Marine Applications, Wastewater Treatment
Duplex 2304 EFW Pipe - Schedule 80
- Dimensions: 3" to 10" Diameter
- Condition: Cold Drawn
- Applications: Pressure Vessels, Structural Applications
Duplex 2304 EFW Pipe - Custom Sizes
- Dimensions: Custom Lengths Available
- Condition: As Fabricated
- Applications: Specialized Industrial 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 2304 EFW Pipe
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Duplex 2304 | 3 mm | $2.50 – $3.00 | ₹207 – ₹248 |
| Duplex 2304 | 6 mm | $2.40 – $2.90 | ₹199 – ₹241 |
| Duplex 2304 | 10 mm | $2.30 – $2.80 | ₹192 – ₹232 |
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 2304 EFW 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.
People Also Search For
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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