Duplex S31803 Spool exporter in Indonesia
Duplex S31803 Spool exporter in Indonesia plays a crucial role in supplying high-quality duplex stainless steel components tailored for demanding industrial applications. This specific grade, known for its balanced austenitic-ferritic microstructure, offers exceptional corrosion resistance and mechanical strength, making it ideal for fabricating spools used in piping systems across various sectors.
The Duplex S31803 material is characterized by its superior resistance to stress corrosion cracking, pitting, and crevice corrosion, especially in chloride-rich environments. Its robust tensile strength and excellent weldability ensure reliable performance under high pressure and temperature conditions, which is essential for offshore, chemical, and petrochemical industries. Spools manufactured from this duplex alloy typically conform to stringent international standards, ensuring compatibility and durability in complex pipeline assemblies.
In Indonesia, exporters of these duplex stainless steel spools maintain rigorous quality control and adhere to global export regulations. They provide customized spool configurations, including flanges, elbows, and tees, designed to meet specific client requirements. Advanced fabrication techniques combined with precise dimensional accuracy guarantee that the products are ready for immediate integration into large-scale infrastructure projects.
These spools find extensive applications in oil and gas processing plants, marine engineering, desalination units, and power generation facilities. Their resistance to harsh chemical exposure and mechanical stress extends service life and reduces maintenance costs, making them a preferred choice for industrial buyers seeking long-term reliability. Exporters ensure that all documentation, certification, and packaging comply with international shipping standards, facilitating smooth delivery to global markets.
Overall, the supply chain for duplex stainless steel spools in Indonesia is well-equipped to support international industrial demands. Buyers can expect timely shipments of corrosion-resistant, high-performance spools that meet both technical specifications and export readiness criteria, reinforcing Indonesia’s position as a strategic hub for duplex steel component distribution.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex S31803 Spool exporter in Indonesia 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 in Indonesia
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex S31803 Spool exporter in Indonesia
- 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 in Indonesia
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 in Indonesia
| 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 corrosion resistance in chloride environments
- ✔ Excellent mechanical properties at elevated temperatures
- ✔ Improved stress corrosion cracking resistance compared to standard stainless steels
- ✔ Good weldability and formability
- ✔ High strength-to-weight ratio
- ✔ Versatile applications in oil and gas, petrochemical, and marine industries
Technical Overview of Duplex S31803
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex S31803 Spool | Fe, 22% Cr, 5% Ni, 3% Mo, 0.17% N | Used in oil and gas pipelines, chemical processing, and marine applications | ASTM A790, ASME SA790 |
| Duplex S31803 Spool | Fe, 22% Cr, 5% Ni, 3% Mo, 0.17% N | Designed for high strength and resistance to corrosion | ISO 15156, NACE MR0175 |
| Duplex S31803 Spool | Fe, 22% Cr, 5% Ni, 3% Mo, 0.17% N | Commonly used in high-pressure applications | API 5L, ASTM A928 |
Specifications Table
| Material | Duplex S31803 |
|---|---|
| Grades | S31803 |
| Standard | ASTM A790 / ASME SA790 |
| Size Range | 1/2" to 24" (NPS) |
| Length | Up to 12 meters |
| Form | Spool |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex S31803 | Fe, 22% Cr, 5% Ni, 3% Mo | Oil and gas, chemical processing, marine applications |
| Duplex S32205 | Fe, 22% Cr, 5.5% Ni, 3% Mo | Offshore platforms, heat exchangers, pressure vessels |
| Duplex S32750 | Fe, 25% Cr, 7% Ni, 4% Mo | Seawater applications, pulp and paper industry |
| Super Duplex S32760 | Fe, 25% Cr, 7% Ni, 4% Mo | Oil and gas, chemical processing, high chloride environments |
| Duplex S31803 L | Fe, 22% Cr, 5% Ni, 3% Mo, low carbon | Welded structures, low carbon applications |
Available Sizes of Duplex S31803 (MM)
| Size (MM) | Size (MM) |
|---|---|
| 25 | 50 |
| 32 | 60 |
| 40 | 70 |
| 50 | 80 |
| 65 | 90 |
| 80 | 100 |
| 100 | 120 |
| 150 | 200 |
| 250 | 300 |
| 400 | 500 |
Chemical Properties of Duplex S31803
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 22.0 - 23.0 |
| Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo) | 3.0 - 3.5 |
| Iron (Fe) | Balance |
| Manganese (Mn) | 0.8 - 1.5 |
| Silicon (Si) | 0.5 |
| Carbon (C) | ≤ 0.03 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.01 |
Mechanical Properties of Duplex S31803
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 - 850 |
| Yield Strength (MPa) | 450 minimum |
| Elongation (%) | 25 minimum |
| Hardness (HB) | 250 maximum |
| Impact Toughness (J at -40°C) | ≥ 40 |
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 | 1400 - 1450 °C | 2552 - 2642 °F |
Specific Heat of Duplex S31803
| Specific Heat of Duplex S31803 | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Annealed |
| 480 | 100 - 200 | Annealed |
| 460 | 200 - 300 | Annealed |
Electrical Resistivity of Duplex S31803
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.75 | 20 | As-rolled |
| 0.76 | 100 | |
| 0.78 | 200 | |
| 0.80 | 300 | |
| 0.82 | 400 | |
Equivalent of Duplex S31803
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A790 | 1.4462 | S31803 |
| EN 10088-3 | X5CrNiMoN 22-5-3 | S31803 |
Manufacturing Process & Heat Treatment of Duplex S31803
Annealing
The annealing process for Duplex S31803 involves heating the material to a temperature range of 1020°C to 1100°C, followed by controlled cooling. This treatment helps to relieve internal stresses, improve ductility, and refine the microstructure, enhancing overall performance in service.
Forging
Forging of Duplex S31803 is typically performed at temperatures ranging from 1000°C to 1200°C. This process enhances the mechanical properties of the material by refining the grain structure and improving strength and toughness. The forged products are then allowed to cool slowly to room temperature.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1000 - 1100 | Water or Oil | To increase hardness and strength |
| Tempering | 600 - 800 | Air | To relieve stresses and improve toughness |
| Stress Relieving | 500 - 600 | Air | To reduce residual stresses from manufacturing processes |
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 1
- Diameter: 100mm, Length: 500mm
- Condition: Hot Rolled
- Applications: Oil & Gas, Chemical Processing
Duplex S31803 Spool 2
- Diameter: 150mm, Length: 1000mm
- Condition: Cold Drawn
- Applications: Marine, Pulp & Paper
Duplex S31803 Spool 3
- Diameter: 200mm, Length: 750mm
- Condition: Annealed
- Applications: Power Generation, Water Treatment
Duplex S31803 Spool 4
- Diameter: 250mm, Length: 1200mm
- Condition: Pickled and Passivated
- Applications: Food Processing, Pharmaceutical
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 Spool
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Duplex S31803 | 3 mm | $2.50 – $2.80 | ₹205 – ₹225 |
| Duplex S31803 | 6 mm | $2.40 – $2.70 | ₹200 – ₹220 |
| Duplex S31803 | 10 mm | $2.30 – $2.60 | ₹195 – ₹215 |
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 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 S31803 Pipe Supplier in Indonesia
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- Duplex S31803 Bar Stockist in Indonesia
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