Duplex S31803 Spool supplier Dammam
Duplex S31803 Spool supplier Dammam offers high-quality duplex stainless steel spools designed to meet the stringent demands of various industrial sectors. Manufactured from Duplex S31803, a robust and corrosion-resistant alloy, these spools provide excellent strength and durability, making them ideal for use in harsh environments. Their balanced microstructure combines austenitic and ferritic properties, delivering superior resistance to stress corrosion cracking and pitting, which is essential for long-term operational reliability.
These duplex stainless steel spools are precision-engineered to facilitate seamless integration within piping systems, particularly in oil and gas, petrochemical, and marine industries. Their mechanical properties include a tensile strength typically around 620 MPa and a yield strength near 450 MPa, ensuring they withstand high pressures and temperatures. The material's enhanced resistance to chloride-induced corrosion makes it an excellent choice for offshore platforms and chemical processing plants where exposure to aggressive media is common.
In addition to performance, these spools are available in various sizes and configurations, tailored to meet project specifications and industry standards such as ASTM A789 and EN 10217. The supplier in Dammam ensures that each spool undergoes rigorous quality control, including non-destructive testing and dimensional inspections, to guarantee compliance with international norms. This attention to detail supports seamless installation and maintenance, reducing downtime and operational costs.
Export readiness is a critical aspect of the supply chain for these duplex spools. The supplier maintains comprehensive documentation, including material test certificates, traceability reports, and packing lists, facilitating smooth customs clearance and timely delivery worldwide. Their expertise in logistics and adherence to export regulations ensures that industrial buyers receive their orders promptly and in optimal condition, supporting global projects efficiently.
Overall, sourcing duplex stainless steel spools from a reputable supplier in Dammam ensures access to premium materials engineered for demanding applications. Their combination of mechanical strength, corrosion resistance, and quality assurance makes these spools a valuable component for industries requiring reliable and durable piping solutions.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Duplex S31803 Spool supplier Dammam 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 supplier Dammam
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Duplex S31803 Spool supplier Dammam
- 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 supplier Dammam
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 supplier Dammam
| 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
- ✔ Excellent corrosion resistance in various environments
- ✔ High strength-to-weight ratio, making it ideal for critical applications
- ✔ Dual-phase microstructure ensuring enhanced toughness and durability
- ✔ Superior weldability for seamless integration in construction
- ✔ Resistance to stress corrosion cracking suitable for chloride-containing environments
- ✔ Compliance with various industry standards for quality assurance
Technical Overview of Duplex S31803
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Duplex S31803 Spool | Fe, 22% Cr, 5% Ni, 3% Mo, 0.17% N | Oil and gas piping, chemical processing | ASTM A790, ASME SA790 |
| Duplex S31803 Spool | Fe, 22% Cr, 5% Ni, 3% Mo, 0.17% N | Marine applications, pressure vessels | EN 10088-3, ISO 15156 |
| Duplex S31803 Spool | Fe, 22% Cr, 5% Ni, 3% Mo, 0.17% N | Heat exchangers, pulp and paper industry | API 5L, NACE MR0175 |
Specifications Table
| Material | Duplex S31803 |
|---|---|
| Grades | S31803 |
| Standard | AISI/ASTM |
| Size Range | 1" to 24" nominal pipe size |
| Length | 6 meters (custom lengths available upon request) |
| Form | Spool |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Duplex S31803 | Fe, 22% Cr, 5.5% Ni, 3% Mo | Oil & Gas, Chemical Processing |
| Duplex S32205 | Fe, 22% Cr, 5.0% Ni, 3.2% Mo | Marine, Pulp & Paper |
| Duplex S32750 | Fe, 25% Cr, 7% Ni, 4% Mo | Desalination plants, High strength applications |
| Duplex S31803 LN | Fe, 22% Cr, 5.5% Ni, 3% Mo, N | Power generation, Structural applications |
| Duplex S32760 | Fe, 25% Cr, 7% Ni, 4% Mo, N | Oil and gas, Chemical processing |
Available Sizes of Duplex S31803 (MM)
| Size (MM) | Size (MM) |
|---|---|
| 25 | 50 |
| 32 | 63 |
| 40 | 76 |
| 50 | 90 |
| 63 | 100 |
| 76 | 120 |
| 90 | 150 |
| 100 | 200 |
| 150 | 250 |
| 200 | 300 |
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 |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 19.0 - 21.0 |
| Nickel (Ni) | 4.5 - 6.5 |
| Molybdenum (Mo) | 2.5 - 3.5 |
Mechanical Properties of Duplex S31803
| Property | Value |
|---|---|
| Tensile Strength | 620 MPa |
| Yield Strength | 450 MPa |
| Elongation | 25% |
| Hardness | 290 HB |
| Impact Toughness (Charpy V-notch) | 50 J at -40°C |
Duplex S31803 – Physical & Thermal Properties
Density of Duplex S31803
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.8 g/cm3 | 0.282 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 | Room Temperature |
| 600 | 100 - 400 | High Temperature |
| 700 | 400 - 800 | Near Melting |
Electrical Resistivity of Duplex S31803
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.71 | 20 | As fabricated |
| 0.72 | 100 | |
| 0.73 | 200 | |
| 0.75 | 300 | |
| 0.76 | 400 | |
Equivalent of Duplex S31803 Spool supplier Dammam
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A790 | 1.4462 | S31803 |
| EN 10088-3 | X2CrNiMoN22-5-3 | S31803 |
Manufacturing Process & Heat Treatment of Duplex S31803
Annealing
Annealing of Duplex S31803 is performed at temperatures ranging from 1020°C to 1100°C. This process helps to relieve internal stresses and enhance ductility, allowing for better formability during subsequent processing. The material is held at the desired temperature for a specific time before being cooled in air, which helps in achieving a uniform microstructure.
Forging
Forging of Duplex S31803 involves heating the material to approximately 1150°C to 1250°C. This process improves the mechanical properties through refinement of the grain structure. The material is then shaped using hammers or presses, which imparts strength and toughness, making it suitable for high-stress applications.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1000 - 1100 | Oil | To increase hardness and strength through martensitic transformation. |
| Tempering | 600 - 800 | Air | To reduce brittleness and improve toughness after hardening. |
| Stress Relieving | 300 - 500 | Air | To relieve residual stresses from welding and machining. |
The manufacturing and heat treatment processes of Duplex S31803 are crucial in achieving the desired mechanical properties and microstructure, ensuring that the material meets the stringent requirements for various industrial applications.
Various Types
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 | $3.50 – $4.00 | ₹290 – ₹330 |
| Duplex S31803 | 6 mm | $3.80 – $4.30 | ₹310 – ₹350 |
| Duplex S31803 | 10 mm | $4.00 – $4.50 | ₹330 – ₹370 |
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
- Duplex S31803 Pipe Supplier Dammam
- Duplex S31803 Fittings Supplier Dammam
- Duplex S31803 Flanges Supplier Dammam
- Duplex S31803 Plate Supplier Dammam
- Duplex S31803 Bar Supplier Dammam
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