Duplex S31803 Spool exporter Saudi Arabia
Duplex S31803 Spool exporter Saudi Arabia plays a crucial role in supplying high-quality duplex stainless steel components tailored for demanding industrial applications. Manufactured from duplex stainless steel grade S31803, these spools combine excellent corrosion resistance with superior mechanical strength, making them ideal for use in aggressive environments such as oil and gas, petrochemical, and marine industries. The balanced microstructure of ferrite and austenite phases ensures durability and resistance against stress corrosion cracking.
The spool products typically consist of precision-engineered pipes and fittings that are fabricated to meet stringent industry standards such as ASTM A789 and EN 10217. These components are designed to withstand high pressure and temperature conditions, which are common in processing plants and offshore platforms. Their robust construction and dimensional accuracy contribute to efficient pipeline assembly and long service life, reducing downtime and maintenance costs for industrial operators.
Applications for these duplex stainless steel spools extend beyond traditional sectors, including chemical processing, desalination plants, and power generation facilities. Their enhanced corrosion resistance against chlorides and acidic environments makes them indispensable in coastal and offshore installations where exposure to seawater is frequent. Additionally, their weldability and resistance to fatigue stress make them suitable for complex piping systems requiring reliable performance over extended periods.
Export readiness is a key consideration for suppliers based in Saudi Arabia, given the country's strategic location and access to major shipping routes. The spools are typically subjected to rigorous quality control measures, including dimensional inspections, non-destructive testing, and material certification, ensuring compliance with international standards. Packaging and handling are optimized for safe transit, preserving the integrity of the products during shipping to global industrial hubs.
For industrial buyers seeking reliable duplex stainless steel piping solutions, sourcing from experienced exporters in Saudi Arabia guarantees access to premium spools tailored to specific project requirements. The combination of advanced metallurgy, precise manufacturing, and logistical expertise supports seamless integration into complex piping infrastructures, enhancing overall operational efficiency and safety in challenging industrial environments.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex S31803 Spool exporter 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 S31803 Spool exporter Saudi Arabia
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex S31803 Spool exporter 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 S31803 Spool exporter 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 S31803 Spool exporter 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 S31803 Spool
- ✔ High resistance to corrosion in various environments
- ✔ Excellent mechanical properties, ensuring outstanding strength
- ✔ Good weldability and fabricability, suitable for various applications
- ✔ Optimal performance in high-temperature conditions
- ✔ Cost-effective solution for demanding industrial applications
- ✔ Complies with international standards and specifications
Technical Overview of Duplex S31803
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex S31803 Spool | 22% Cr, 5% Ni, 3% Mo, balance Fe | Used in high-pressure and high-temperature applications in oil and gas industries | ASTM A790, ASME SA790 |
| Duplex S31803 Spool | 22% Cr, 5% Ni, 3% Mo, balance Fe | Ideal for piping systems that require high strength and corrosion resistance | API 5L, NACE MR0175 |
| Duplex S31803 Spool | 22% Cr, 5% Ni, 3% Mo, balance Fe | Commonly employed in chemical processing and marine environments | ISO 15156, EN 10216-5 |
Specifications Table
| Material | Duplex S31803 |
|---|---|
| Grades | S31803 |
| 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 S31803 | 22% Cr, 5% Ni, 3% Mo | Oil and gas, chemical processing, and marine applications |
| Duplex S32205 | 22% Cr, 5.5% Ni, 3.2% Mo | Structural components in offshore and onshore environments |
| Duplex S32750 | 25% Cr, 7% Ni, 4% Mo | High-strength applications in oil and gas industries |
| Duplex S31803N | 22% Cr, 5% Ni, 3% Mo, N | Piping systems in corrosive environments |
| Duplex S32760 | 25% Cr, 7% Ni, 4% Mo, 0.2% N | Seawater applications, pulp and paper industries |
Available Sizes of Duplex S31803 (MM)
| Size (MM) | Size (MM) |
|---|---|
| 25 | 50 |
| 32 | 63 |
| 40 | 76 |
| 50 | 89 |
| 63 | 102 |
| 76 | 114 |
| 89 | 127 |
| 102 | 140 |
| 114 | 159 |
| 140 | 168 |
Chemical Properties of Duplex S31803
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.03 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.03 max |
| Sulfur (S) | 0.02 max |
| Chromium (Cr) | 22.0 - 23.0 |
| Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo) | 3.0 - 3.5 |
| Nitrogen (N) | 0.08 - 0.2 |
Mechanical Properties of Duplex S31803
| Property | Value |
|---|---|
| Tensile Strength | 620 - 850 MPa |
| Yield Strength | 450 - 600 MPa |
| Elongation | 25% (min) |
| Hardness | 220 - 300 HB |
| Impact Strength | ≥ 40 J at -40°C |
Duplex S31803 – Physical & Thermal Properties
Density of Duplex S31803
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.8 g/cm³ | 0.28 lb/in³ |
Melting Point of Duplex S31803
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1425-1450 °C | 2600-2642 °F |
Specific Heat of Duplex S31803
| Specific Heat of Duplex S31803 | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 25-100 | Room Temperature |
| 460 | 100-200 | Elevated Temperature |
| 420 | 200-600 | High Temperature |
Electrical Resistivity of Duplex S31803
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.75 | 20 | As-rolled |
| 0.85 | 100 | |
| 0.95 | 200 | |
| 1.05 | 300 | |
| 1.15 | 400 | |
Equivalent of Duplex S31803
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A240 | 1.4462 | S31803 |
| EN 10088-1 | X2CrNiMoN22-5-3 | S31803 |
Manufacturing Process & Heat Treatment of Duplex S31803
Annealing
Annealing of Duplex S31803 involves heating the material to a temperature range of 1020°C to 1100°C, followed by a controlled cooling process. This treatment helps to relieve stresses and improve ductility while maintaining the desired microstructure of the duplex stainless steel.
Forging
The forging process for Duplex S31803 is typically conducted at temperatures between 1100°C and 1200°C. This high-temperature forging enhances the mechanical properties of the material by refining its grain structure, resulting in improved 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 | 300 - 600 | Air | To relieve internal stresses after machining |
The combination of these manufacturing and heat treatment processes ensures that Duplex S31803 spools exhibit optimal mechanical properties and corrosion resistance, making them suitable for various industrial applications.
Various Types
Duplex S31803 Spool - Standard
- Diameter: 100 mm - 500 mm
- Condition: Hot Finished
- Applications: Oil & Gas, Marine
Duplex S31803 Spool - Customized
- Diameter: 50 mm - 600 mm
- Condition: Cold Drawn
- Applications: Chemical Processing, Pulp and Paper
Duplex S31803 Spool - High Pressure
- Diameter: 200 mm - 400 mm
- Condition: Solution Annealed
- Applications: Power Generation, Water Treatment
Duplex S31803 Spool - Heavy Duty
- Diameter: 300 mm - 800 mm
- Condition: Heat Treated
- Applications: Structural, Offshore Platforms
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 S31803
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Duplex S31803 | 3 mm | $2.50 – $3.00 | ₹207 – ₹248 |
| Duplex S31803 | 6 mm | $2.40 – $2.90 | ₹199 – ₹241 |
| Duplex S31803 | 10 mm | $2.30 – $2.80 | ₹192 – ₹233 |
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 S31803.
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