Super Duplex Flanges exporter in Indonesia
Super Duplex Flanges exporter in Indonesia plays a crucial role in supplying high-performance flange solutions tailored for demanding industrial environments. These flanges are manufactured using super duplex stainless steel, known for its exceptional corrosion resistance, high strength, and excellent durability. Designed to withstand harsh conditions such as seawater exposure, chemical processing, and oil and gas applications, these flanges provide reliable connections in piping systems that require both mechanical robustness and resistance to stress corrosion cracking.
Typically, the product range includes weld neck, slip-on, blind, and threaded flanges, all fabricated according to international standards such as ASTM A182 and ASME B16.5. The super duplex material, often grade UNS S32750 or S32760, offers a balanced microstructure of austenite and ferrite, enhancing toughness and resistance to chloride-induced pitting. This makes them highly suitable for offshore platforms, desalination plants, and petrochemical industries where operational integrity is paramount.
In terms of specifications, these flanges are available in various pressure classes, commonly ranging from ANSI Class 150 to Class 2500. They come in multiple sizes and thicknesses to accommodate different pipeline diameters and pressure requirements. Precision manufacturing processes ensure tight dimensional tolerances, surface finish quality, and adherence to mechanical property standards, supporting seamless integration into existing pipeline networks.
Export readiness is a key focus for suppliers in Indonesia, with robust quality assurance protocols, third-party inspections, and comprehensive certification packages. This ensures that international buyers receive products compliant with global industrial norms and capable of performing reliably under extreme conditions. Efficient logistics and packaging solutions further guarantee safe delivery to customers across Asia, Europe, and the Middle East.
For industrial buyers seeking durable and corrosion-resistant flange solutions, sourcing from a reputable Indonesian supplier offers the advantage of competitive pricing combined with high technical standards. The availability of super duplex flanges tailored for specialized applications makes them an ideal choice for projects demanding longevity and safety in aggressive environments.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Super Duplex Flanges 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 Super Duplex Flanges exporter in Indonesia
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Super Duplex Flanges 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 Super Duplex Flanges 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 Super Duplex Flanges 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 Super Duplex Flanges
- ✔ Exceptional corrosion resistance, ideal for challenging environments
- ✔ High strength and durability, suitable for high-pressure applications
- ✔ Excellent weldability, allowing for versatile installation options
- ✔ Resistance to pitting and crevice corrosion, enhancing longevity
- ✔ Wide range of sizes and specifications to meet diverse needs
- ✔ Compliance with international standards for quality and safety
Technical Overview of Super Duplex Flanges
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Super Duplex Flange | 25% Chromium, 7% Nickel, 4% Molybdenum | Used in high-pressure and high-temperature applications in oil and gas industries | ASTM A182, ASME SA182 |
| Super Duplex Blind Flange | 25% Chromium, 7% Nickel, 4% Molybdenum | Sealing off the end of a pipeline | ASTM A240, ASME SA240 |
| Super Duplex Weld Neck Flange | 25% Chromium, 7% Nickel, 4% Molybdenum | Connecting pipes in critical service environments | ANSI/ASME B16.5 |
Specifications Table
| Material | Super Duplex Stainless Steel |
|---|---|
| Grades | S32750, S32760 |
| Standard | ASTM A182, ASTM A240 |
| Size Range | 1/2" to 36" |
| Length | Customizable lengths available |
| Form | Flanges (Slip-on, Blind, Weld Neck, Threaded) |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Super Duplex 2507 | 25% Cr, 7% Ni, 4% Mo, 0.3% N | Oil and gas, chemical processing, marine applications |
| Super Duplex 32750 | 25% Cr, 6% Ni, 4% Mo, 0.2% N | Pulp and paper, desalination, power generation |
| Super Duplex 32760 | 26% Cr, 7% Ni, 3.5% Mo, 0.3% N | Offshore platforms, petrochemical industry, water treatment |
| Super Duplex 2501 | 21% Cr, 6% Ni, 2.5% Mo, 0.2% N | Food processing, pulp and paper, marine applications |
| Super Duplex 2205 | 22% Cr, 5% Ni, 3% Mo, 0.2% N | Structural applications, oil and gas, wastewater treatment |
Available Sizes of Super Duplex Flanges (MM)
| Size (MM) | Size (MM) |
|---|---|
| 15 | 20 |
| 25 | 32 |
| 40 | 50 |
| 65 | 80 |
| 100 | 125 |
| 150 | 200 |
| 250 | 300 |
| 350 | 400 |
| 450 | 500 |
| 600 | 700 |
Chemical Properties of Super Duplex Stainless Steel (UNS S32750)
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 24.0 - 26.0 |
| Nickel (Ni) | 6.0 - 8.0 |
| Molybdenum (Mo) | 3.0 - 5.0 |
| Tungsten (W) | 0.5 - 1.0 |
| Iron (Fe) | Balance |
| Manganese (Mn) | 1.0 |
| Silicon (Si) | 1.0 |
| Carbon (C) | 0.03 |
Mechanical Properties of Super Duplex Stainless Steel (SDSS)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 620 - 850 |
| Yield Strength (MPa) | 450 - 650 |
| Elongation (%) | 25 - 40 |
| Hardness (HB) | 250 - 300 |
| Impact Toughness (J @ -40°C) | ≥ 40 |
Super Duplex Flanges – Physical & Thermal Properties
Density of Super Duplex Flanges
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.8 g/cm³ | 0.28 lb/in³ |
Melting Point of Super Duplex Flanges
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1320 - 1400 °C | 2408 - 2552 °F |
Specific Heat of Super Duplex Flanges
| Specific Heat of Super Duplex Flanges | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Solid |
| 700 | 100 - 500 | Solid |
| 800 | 500 - 1000 | Solid |
Electrical Resistivity of Super Duplex Flanges
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.70 | 20 | As Manufactured |
| 0.72 | 100 | |
| 0.75 | 200 | |
| 0.80 | 300 | |
| 0.85 | 400 | |
Equivalent of Super Duplex Flanges
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A182 | 1.4410 | S32750 |
| ASTM A790 | 1.4501 | S32760 |
Manufacturing Process & Heat Treatment of Super Duplex Flanges
Annealing
Annealing of super duplex flanges is performed to relieve stresses induced during the manufacturing process. The flanges are heated to a temperature range of 1020-1100°C and held for a specific duration before cooling in air. This process enhances ductility and reduces hardness, making the material easier to machine.
Forging
The forging process involves heating the super duplex stainless steel to approximately 1150°C, followed by mechanical deformation to shape the flanges. This process improves the mechanical properties, including strength and toughness, by refining the grain structure of the material.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1020-1100 | Oil | To increase hardness and strength by forming martensite |
| Tempering | 700-800 | Air | To reduce brittleness and improve toughness after hardening |
| Stress Relieving | 600-700 | Air | To minimize residual stresses from machining and welding |
The combination of these manufacturing processes and heat treatments ensures that super duplex flanges are produced with optimal mechanical properties, making them suitable for demanding applications in various industries, including oil and gas, chemical processing, and marine environments.
Various Types
Super Duplex 2507 Flanges
- Diameter: 1/2" to 24", Thickness: 5mm to 40mm
- Condition: Hot Finished, Cold Finished
- Applications: Oil & Gas, Chemical Processing, Marine Engineering
Super Duplex 32750 Flanges
- Diameter: 1" to 30", Thickness: 5mm to 50mm
- Condition: Annealed, Pickled
- Applications: Pulp & Paper, Water Treatment, Heat Exchangers
Super Duplex 31803 Flanges
- Diameter: 3/4" to 36", Thickness: 5mm to 60mm
- Condition: Hot Rolled, Cold Drawn
- Applications: Desalination Plants, Chemical Storage, Pressure Vessels
Super Duplex 2507 Blind Flanges
- Diameter: 1" to 24", Thickness: 5mm to 45mm
- Condition: Machined, As-Welded
- Applications: LNG, Oil Refining, Pharmaceutical Industries
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 Super Duplex Flanges
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Super Duplex | 3 mm | $5.50 – $6.00 | ₹450 – ₹490 |
| Super Duplex | 6 mm | $5.80 – $6.30 | ₹470 – ₹510 |
| Super Duplex | 10 mm | $6.00 – $6.50 | ₹490 – ₹530 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for Super Duplex Flanges.
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
- Super Duplex Steel Suppliers in Indonesia
- Duplex Flanges Manufacturers in Indonesia
- Stainless Steel Flanges Exporters Indonesia
- Super Duplex Pipe Fittings in Indonesia
- Industrial Flanges Exporters 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