Duplex Spool exporter in Oman
Duplex Spool exporter in Oman plays a crucial role in supplying high-quality duplex stainless steel piping components tailored for demanding industrial environments. These spools are fabricated using duplex stainless steel grades that combine excellent corrosion resistance with superior mechanical strength, making them ideal for applications in oil and gas, petrochemical, and marine sectors. The material’s balanced microstructure ensures enhanced resistance to chloride stress corrosion cracking and pitting, which is vital for the harsh operating conditions typical in Middle Eastern industries.
Manufactured with precision, the spools are designed to meet stringent international standards such as ASTM A790 and ASME B31.3, ensuring compatibility and safety in complex pipeline systems. The product range includes welded pipe assemblies, flanges, and fittings, all expertly joined to form ready-to-install units that reduce onsite fabrication time and improve project efficiency. The duplex stainless steel used typically falls within grades 2205 and 2507, offering a perfect blend of toughness and durability for high-pressure and high-temperature applications.
These piping spools find extensive use in offshore platforms, refineries, and chemical processing plants where aggressive fluids and saline environments demand superior corrosion resistance. Their robust design supports seamless integration into existing systems, catering to both new construction projects and maintenance operations. Exporters in Oman ensure that the spools comply with international shipping norms, packaging them securely to withstand long transit routes while maintaining structural integrity.
Oman’s strategic location and well-established logistics infrastructure facilitate efficient global distribution, making it an advantageous hub for industrial buyers seeking duplex stainless steel piping solutions. Export readiness is further enhanced by comprehensive documentation, including mill test certificates, third-party inspection reports, and compliance certifications, which assure quality and traceability. This level of service supports procurement teams in managing supply chain risks and meeting project deadlines effectively.
For industrial buyers requiring reliable duplex stainless steel spool assemblies, sourcing from established exporters in Oman guarantees access to premium products engineered for longevity and performance. The combination of advanced manufacturing techniques, rigorous quality control, and export expertise positions these suppliers as key partners in delivering critical infrastructure components worldwide.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex Spool exporter in Oman 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 Spool exporter in Oman
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex Spool exporter in Oman
- 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 Spool exporter in Oman
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 Spool exporter in Oman
| 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 Spool
- ✔ High corrosion resistance, ideal for harsh environments
- ✔ Excellent mechanical strength and durability
- ✔ Cost-effective solution for various industrial applications
- ✔ Wide range of sizes and configurations available
- ✔ Compatibility with various piping systems
- ✔ Rigorous quality assurance and testing procedures
Technical Overview of Duplex Spool
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex Stainless Steel Spool | 22% Cr, 5% Ni, 3% Mo, balance Fe | Used in high-pressure and corrosive environments such as oil and gas, chemical processing, and marine applications. | ASTM A790, ASME SA790, ISO 15156 |
| Duplex Stainless Steel Spool | 25% Cr, 7% Ni, 4% Mo, balance Fe | Ideal for applications requiring high strength and resistance to stress corrosion cracking. | ASTM A923, ASME SA923, NACE MR0175 |
| Duplex Stainless Steel Spool | Lean Duplex (21% Cr, 2.5% Ni, 0.5% Mo) | Commonly used in water treatment, pulp and paper, and food processing industries. | ASTM A240, ASME SA240, EN 10088-3 |
Specifications Table
| Material | Duplex Stainless Steel |
|---|---|
| Grades | S31803, S32205 |
| Standard | ASTM A790, ASME SA790 |
| Size Range | 1/2" to 24" |
| Length | Up to 12 meters |
| Form | Spool |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2205 | 22% Cr, 5% Ni, 3% Mo | Piping systems, oil and gas, chemical processing |
| Duplex 2507 | 25% Cr, 7% Ni, 4% Mo | Marine environments, desalination plants, offshore platforms |
| Super Duplex 2507 | 25% Cr, 7% Ni, 4% Mo, 0.3% N | High-pressure applications, corrosive service environments |
| Duplex 329 | 27% Cr, 5% Ni, 3% Mo | Power generation, heat exchangers, wastewater treatment |
| Duplex 2201 | 21% Cr, 2.5% Ni, 0.2% N | Food processing, pulp and paper, marine applications |
Available Sizes of Duplex Spool (MM)
| Size (MM) | Size (MM) |
|---|---|
| 50 | 100 |
| 75 | 150 |
| 90 | 200 |
| 110 | 250 |
| 125 | 300 |
| 140 | 350 |
| 160 | 400 |
| 200 | 450 |
| 250 | 500 |
| 300 | 600 |
Chemical Properties of Duplex Stainless Steel
| Element | Composition (%) |
|---|---|
| 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 |
| Carbon (C) | 0.03 max |
| Sulfur (S) | 0.01 max |
| Phosphorus (P) | 0.03 max |
Mechanical Properties of Duplex Stainless Steel (F51)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 - 850 |
| Yield Strength (MPa) | 450 - 700 |
| Elongation (% in 50 mm) | 25 |
| Hardness (HB) | 250 - 320 |
| Impact Toughness (J at -40°C) | ≥ 40 |
Duplex Stainless Steel – Physical & Thermal Properties
Density of Duplex Stainless Steel
| Property | Metric | Imperial |
|---|---|---|
| Density | 7,800 kg/m³ | 0.283 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 |
| 600 | 100 - 600 | Solid |
| 700 | 600 - 1,000 | Solid |
Electrical Resistivity of Duplex Stainless Steel
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.72 | 20 | Solution Annealed |
| 0.75 | 100 | |
| 0.78 | 200 | |
| 0.80 | 300 | |
| 0.82 | 400 | |
Equivalent of Duplex Stainless Steel
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A240 | 1.4462 | S32205 |
| EN 10088-3 | X2CrNiMoN22-5-3 | S31803 |
Manufacturing Process & Heat Treatment of Duplex Spools
Annealing
Annealing of duplex spools involves a controlled heating process typically carried out at temperatures ranging from 1020°C to 1100°C. This process helps to relieve internal stresses, improve ductility, and enhance the overall microstructure of the material, ensuring optimal performance in various applications.
Forging
Forging of duplex spools is performed using hot working techniques, where the material is heated to a temperature of around 1200°C and then shaped under pressure. This method enhances the mechanical properties of the steel by refining the grain structure, leading to improved strength and toughness.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1000 - 1100 | Oil | To increase hardness and strength of the duplex steel |
| Tempering | 600 - 800 | Air | To reduce brittleness and improve toughness |
| Stress Relieving | 400 - 600 | Air | To minimize residual stresses after machining |
The combination of these manufacturing and heat treatment processes ensures that duplex spools meet the stringent quality standards required for various industrial applications, providing excellent performance and durability.
Various Types
Duplex Stainless Steel Spool - Type 2205
- Dimensions: 2" to 12" diameter
- Condition: Hot Finished
- Applications: Oil and Gas, Marine, Chemical Processing
Duplex Stainless Steel Spool - Type 2507
- Dimensions: 3" to 10" diameter
- Condition: Cold Drawn
- Applications: Desalination, Pulp and Paper, Power Generation
Duplex Stainless Steel Spool - Super Duplex
- Dimensions: 1" to 8" diameter
- Condition: Annealed
- Applications: Offshore Oil Rigs, Chemical Injection, Heat Exchangers
Duplex Stainless Steel Spool - ASTM A790
- Dimensions: 4" to 16" diameter
- Condition: Pickled and Passivated
- Applications: Water Treatment, Heat Recovery, 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 Spool
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Duplex Spool | 3 mm | $2.50 – $3.00 | ₹207 – ₹248 |
| Duplex Spool | 6 mm | $2.80 – $3.30 | ₹232 – ₹273 |
| Duplex Spool | 10 mm | $3.10 – $3.70 | ₹257 – ₹307 |
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 Spool.
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 Supplier in Oman
- Stainless Steel Spool Manufacturer in Oman
- Duplex Fittings Exporter in Oman
- Oman Steel Fabrication Services
- Duplex Steel Flange Supplier in Oman
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