Duplex 2304 EFW Pipe exporter in Singapore
Duplex 2304 EFW Pipe exporter in Singapore specializes in supplying high-quality duplex stainless steel pipes manufactured through the Electric Fusion Welding (EFW) process. These pipes, made from Duplex 2304 alloy, offer an excellent balance of corrosion resistance and mechanical strength, making them ideal for demanding industrial environments. As a reliable supplier in Singapore, the exporter ensures that the products meet stringent international standards and customer specifications.
Duplex 2304 is a low-nickel, nitrogen-enhanced stainless steel grade known for its superior resistance to stress corrosion cracking, pitting, and crevice corrosion. The EFW fabrication method used to produce these pipes results in a smooth internal surface and robust weld integrity, which are critical for maintaining performance in aggressive media. Typical pipe dimensions and wall thicknesses are available to suit various pressure and temperature requirements, supporting diverse industrial applications.
These duplex stainless steel pipes are widely used in sectors such as oil and gas, chemical processing, water treatment, and marine engineering. Their unique duplex microstructure provides a combination of austenitic and ferritic phases, offering enhanced toughness and durability under harsh operating conditions. Industries that demand reliable piping solutions for transporting corrosive fluids or managing high-pressure systems find these pipes particularly valuable.
Export readiness is a key focus for the Singapore-based supplier, ensuring that all shipments comply with international shipping regulations and quality assurance protocols. The pipes undergo rigorous testing, including non-destructive examination and dimensional checks, before dispatch. Packaging is designed to protect the integrity of the pipes during transit, facilitating smooth delivery to global industrial clients.
For industrial buyers seeking dependable duplex stainless steel piping solutions, sourcing from an experienced exporter in Singapore provides added confidence in product quality and timely delivery. The combination of advanced manufacturing techniques, comprehensive quality control, and strategic export logistics makes these Duplex 2304 EFW pipes a preferred choice for critical infrastructure projects worldwide.
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 Singapore 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 Singapore
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex 2304 EFW Pipe exporter in Singapore
- 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 Singapore
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 Singapore
| 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
- ✔ High resistance to corrosion, especially in chloride environments
- ✔ Excellent weldability, making it suitable for various applications
- ✔ Good mechanical properties at elevated temperatures
- ✔ Lightweight yet strong, providing durability and efficiency
- ✔ Cost-effective alternative to higher-grade Duplex and Super Duplex stainless steels
- ✔ Versatile application in industries including oil and gas, chemical processing, and marine
Technical Overview of Duplex 2304 EFW Pipe
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex 2304 EFW Pipe | 22% Cr, 4.5% Ni, 0.2% N, balance Fe | Used in chemical processing, oil and gas, and marine applications | ASTM A240, ASTM A790, ASME SA240 |
| Duplex 2304 EFW Pipe | 22% Cr, 4.5% Ni, 0.2% N, balance Fe | Ideal for applications requiring high strength and corrosion resistance | EN 10088-1, EN 10217-7 |
| Duplex 2304 EFW Pipe | 22% Cr, 4.5% Ni, 0.2% N, balance Fe | Commonly used in wastewater treatment and desalination plants | ISO 15156, NACE MR0175 |
Specifications Table
| Material | Duplex Stainless Steel |
|---|---|
| Grades | UNS S32304 |
| Standard | ASTM A789 / A790 |
| Size Range | 1/2" to 24" |
| Length | Up to 12 meters |
| Form | Electric Fusion Welded (EFW) |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2304 EFW Pipe | Fe, 18% Cr, 4.5% Ni, 0.14% N | Used in various applications including chemical processing, oil and gas, and marine environments. |
| Duplex 2304 EFW Pipe | Fe, 24% Cr, 6% Ni, 0.2% N | Suitable for high-strength applications and resistance to stress corrosion cracking. |
| Duplex 2304 EFW Pipe | Fe, 19% Cr, 5% Ni, 0.3% N | Ideal for pipeline construction and structural components in aggressive environments. |
| Duplex 2304 EFW Pipe | Fe, 21% Cr, 4% Ni, 0.16% N | Commonly used in heat exchangers and pressure vessels. |
| Duplex 2304 EFW Pipe | Fe, 20% Cr, 5.5% Ni, 0.12% N | Appropriate for food processing and pharmaceutical industries due to its corrosion resistance. |
Available Sizes of Duplex 2304 EFW Pipe (MM)
| Size (MM) | Size (MM) |
|---|---|
| 15 | 20 |
| 25 | 32 |
| 40 | 50 |
| 65 | 80 |
| 100 | 125 |
| 150 | 200 |
| 250 | 300 |
| 350 | 400 |
| 450 | 500 |
| 600 | 700 |
Chemical Properties of Duplex 2304
| Element | Composition (%) |
|---|---|
| C | 0.03 max |
| Si | 1.00 max |
| Mn | 2.00 max |
| P | 0.03 max |
| S | 0.02 max |
| Cr | 18.0 - 20.0 |
| Ni | 4.5 - 6.5 |
| Mo | 0.5 - 1.5 |
Mechanical Properties of Duplex 2304 EFW Pipe
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 |
| Yield Strength (MPa) | 450 |
| Elongation (%) | 25 |
| Hardness (HB) | 270 |
| Impact Toughness (J at -40°C) | 40 |
Duplex 2304 EFW Pipe – Physical & Thermal Properties
Density of Duplex 2304 EFW Pipe
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.8 g/cm³ | 0.28 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 |
| 750 | 100 - 600 | Solid |
| 900 | 600 - 1000 | Solid |
Electrical Resistivity of Duplex 2304 EFW Pipe
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.10 | 20 | As fabricated |
| 0.12 | 100 | |
| 0.14 | 200 | |
| 0.16 | 300 | |
| 0.18 | 400 | |
Equivalent of Duplex 2304 EFW Pipe
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| EN 1.4362 | 1.4362 | S32304 |
| ASTM A240 | 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 between 1020°C and 1100°C, followed by a controlled cooling process. This treatment helps to relieve internal stresses, enhance ductility, and improve the overall mechanical properties of the material.
Forging
Forging of Duplex 2304 involves shaping the material through compressive forces applied at elevated temperatures, typically around 1100°C. This process refines the grain structure, enhances strength, and improves the toughness of the final product, ensuring high performance in various applications.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1000 - 1100 | Water | To increase hardness and strength of the material. |
| Tempering | 600 - 800 | Air | To reduce brittleness and improve toughness. |
| Stabilization | 800 - 900 | Air | To enhance corrosion resistance and stabilize the microstructure. |
The manufacturing and heat treatment processes for Duplex 2304 EFW pipes are critical in achieving the desired mechanical properties and corrosion resistance, making them suitable for a wide range of industrial applications.
Various Types
Duplex 2304 EFW Pipe - Schedule 10
- Dimensions: 1/2" to 24" nominal pipe size
- Condition: Hot Finished
- Applications: Oil and Gas, Chemical Processing
Duplex 2304 EFW Pipe - Schedule 40
- Dimensions: 1/2" to 24" nominal pipe size
- Condition: Cold Drawn
- Applications: Marine Applications, Water Treatment
Duplex 2304 EFW Pipe - Schedule 80
- Dimensions: 1/2" to 24" nominal pipe size
- Condition: Annealed
- Applications: Pressure Vessels, Heat Exchangers
Duplex 2304 EFW Pipe - Custom Sizes
- Dimensions: Custom sizes available on request
- Condition: Various conditions available
- Applications: Tailored solutions for specific industries
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 – $2.80 | ₹207 – ₹232 |
| Duplex 2304 | 6 mm | $2.60 – $2.90 | ₹215 – ₹240 |
| Duplex 2304 | 10 mm | $2.70 – $3.00 | ₹223 – ₹248 |
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