Duplex Spool exporter in Indonesia
Duplex Spool exporter in Indonesia plays a crucial role in supplying high-quality piping components to various industrial sectors. These spools are fabricated using duplex stainless steel, known for its excellent corrosion resistance, high strength, and durability. Typically composed of a balanced microstructure of austenite and ferrite, duplex alloys are ideal for demanding environments, including chemical processing, oil and gas, and marine applications. Indonesian manufacturers ensure that each spool meets stringent international standards, making them suitable for global markets.
The product range includes custom-fabricated pipe spools, flanges, fittings, and weld neck components designed to facilitate seamless pipeline construction and maintenance. These components are precision-engineered to accommodate high pressure and temperature conditions, often found in offshore rigs and petrochemical plants. With thicknesses and dimensions tailored to client specifications, the spools offer flexibility and compatibility with existing infrastructure.
One of the key advantages of duplex stainless steel spools is their excellent resistance to stress corrosion cracking and chloride-induced corrosion. This makes them indispensable for projects requiring long-term reliability in harsh environments. The superior mechanical properties also allow for reduced wall thickness without compromising strength, resulting in cost savings on material and transportation.
Export readiness is a significant focus for Indonesian suppliers, who adhere to rigorous quality assurance protocols and international certification requirements such as ISO, ASTM, and EN standards. Packaging and logistics are optimized to ensure safe and timely delivery to various global destinations, including Southeast Asia, the Middle East, and Europe. This commitment to export quality positions Indonesia as a competitive hub for duplex stainless steel spool fabrication.
Industrial buyers seeking robust and corrosion-resistant piping solutions will find these offerings particularly advantageous for their projects. The combination of advanced metallurgy, precise fabrication, and export expertise ensures that clients receive reliable components that enhance operational efficiency and longevity in critical applications.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex 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 Spool exporter in Indonesia
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex 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 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 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 Spool
- ✔ High corrosion resistance for long-lasting performance
- ✔ Excellent strength-to-weight ratio, ensuring durability
- ✔ Easy to fabricate and install, reducing downtime
- ✔ Versatile applications across various industries
- ✔ Cost-effective solution with low maintenance requirements
- ✔ Compliance with international standards for quality assurance
Technical Overview of Duplex Spool
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex Stainless Steel Spool | 22% Chromium, 5% Nickel, 3% Molybdenum | Oil & Gas, Chemical Processing | ASTM A790, ASME SA790 |
| Duplex Stainless Steel Spool | 25% Chromium, 7% Nickel, 4% Molybdenum | Marine Applications, Offshore Structures | ISO 15156, NACE MR0175 |
| Duplex Stainless Steel Spool | 30% Chromium, 8% Nickel, 5% Molybdenum | Pulp & Paper, Desalination Plants | EN 10088-3, ASTM A240 |
Specifications Table
| Material | Duplex Stainless Steel |
|---|---|
| Grades | S31803, S32205 |
| Standard | ASTM A790, ASTM A928 |
| Size Range | 1/2" to 24" (NPS) |
| Length | Up to 12 meters |
| Form | Spool |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex 2205 | 22% Cr, 5% Ni, 3% Mo | Oil and gas, chemical processing, pulp and paper |
| Duplex 2507 | 25% Cr, 7% Ni, 4% Mo | Seawater applications, desalination plants, chemical processing |
| Duplex 32750 | 25% Cr, 6.5% Ni, 3.5% Mo | Oil and gas, offshore platforms, high-pressure applications |
| Duplex 31803 | 22% Cr, 5% Ni, 3% Mo, 0.17% N | Marine environments, chemical processing |
| Duplex 2507 Super Duplex | 25% Cr, 7% Ni, 4% Mo, 0.2% N | High-stress environments, offshore rigs, chemical industries |
Available Sizes of Duplex Spool (MM)
| Size (MM) | Size (MM) |
|---|---|
| 15 | 20 |
| 25 | 32 |
| 40 | 50 |
| 65 | 80 |
| 100 | 125 |
| 150 | 200 |
| 250 | 300 |
| 350 | 400 |
| 450 | 500 |
| 600 | 800 |
Chemical Properties of Duplex Stainless Steel (UNS S32205)
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.03 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.00 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 - 4.0 |
Mechanical Properties of Duplex Stainless Steel
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 - 850 |
| Yield Strength (MPa) | 450 - 600 |
| Elongation (%) | 25 |
| Hardness (HB) | 200 - 300 |
| Impact Toughness (Joule) | 50 |
Duplex Steel – Physical & Thermal Properties
Density of Duplex Steel
| Property | Metric | Imperial |
|---|---|---|
| Density | 7,800 kg/m³ | 0.28 lb/in³ |
Melting Point of Duplex Steel
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1,400 - 1,500 °C | 2,552 - 2,732 °F |
Specific Heat of Duplex Steel
| Specific Heat of Duplex Steel | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Annealed |
| 460 | 100 - 300 | Annealed |
| 380 | 300 - 600 | Annealed |
Electrical Resistivity of Duplex Stainless Steel
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.73 | 20 | As-rolled condition |
| 0.75 | 100 | |
| 0.78 | 200 | |
| 0.80 | 300 | |
| 0.82 | 400 | |
Equivalent of Duplex Stainless Steel
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A790 | 1.4462 | S32205 |
| EN 10088-3 | 1.4462 | S32205 |
Manufacturing Process & Heat Treatment of Duplex Spool
Annealing
Annealing is a critical heat treatment process used to relieve internal stresses and improve the ductility of duplex stainless steel spools. The spools are heated to a temperature range of 1020°C to 1100°C and held for a specified period before being slowly cooled in air. This process enhances the microstructure, ensuring optimal mechanical properties and corrosion resistance.
Forging
Forging of duplex spools involves shaping the metal through compressive forces, typically performed at high temperatures around 1100°C to 1200°C. This process refines the grain structure, resulting in improved strength and toughness. The forged spools undergo subsequent machining to achieve precise dimensions and surface finishes.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1000 - 1100 | Oil | To increase hardness and strength |
| Tempering | 500 - 700 | Air | To reduce brittleness and improve toughness |
| Stabilization | 850 - 950 | Air | To enhance corrosion resistance and stability |
The combination of these processes ensures that duplex spools meet the stringent requirements for strength, toughness, and corrosion resistance necessary for various industrial applications. Proper adherence to these manufacturing and heat treatment practices is essential for maintaining the quality and performance of the final product.
Various Types
Duplex Stainless Steel Spool
- Diameter: 1 inch to 12 inches
- Condition: Hot Finished, Cold Finished
- Applications: Oil & Gas, Chemical Processing
Duplex 2205 Spool
- Diameter: 2 inches to 10 inches
- Condition: Annealed
- Applications: Marine, Desalination
Duplex 2507 Spool
- Diameter: 3 inches to 8 inches
- Condition: Pickled, Passivated
- Applications: Pulp & Paper, Wastewater Treatment
Super Duplex Spool
- Diameter: 1.5 inches to 6 inches
- Condition: Solution Annealed
- Applications: Oil Refining, Chemical Storage
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 | $2.40 – $2.90 | ₹199 – ₹241 |
| Duplex Spool | 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 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 Indonesia
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- Industrial Pipe Exporter 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