Super Duplex 32750 Flanges
Super Duplex 32750 Flanges are engineered components essential for connecting pipes, valves, and other equipment in highly corrosive environments. Manufactured from a high-alloy stainless steel grade, these flanges exhibit exceptional strength and resistance to pitting, crevice corrosion, and stress corrosion cracking. Their composition typically includes approximately 25-28% chromium, 3-5% molybdenum, and 4-5% nickel, making them ideal for demanding industrial applications.
These flanges conform to stringent industry standards such as ASTM A182 and ASME B16.5, ensuring compatibility and safety in various pressure ratings and sizes. Their super duplex microstructure, combining austenitic and ferritic phases, provides superior mechanical properties, including high tensile strength and excellent toughness at elevated temperatures. This makes them suitable for use in offshore oil and gas platforms, chemical processing plants, and desalination facilities.
Due to their corrosion resistance, these components are particularly favored in chloride-rich environments where conventional stainless steels might fail. They are widely used in seawater handling systems, heat exchangers, and pipelines transporting aggressive fluids. The robust design and precision manufacturing of these flanges guarantee reliable performance under fluctuating pressures and harsh operational conditions.
For industrial buyers, the availability of these flanges in various face types such as raised face, ring-type joint, and flat face offers flexibility in installation according to specific system requirements. Additionally, their compatibility with standard bolt patterns facilitates seamless integration into existing infrastructure. Export-ready packaging and adherence to international quality certifications make these flanges a preferred choice for global projects requiring durable and high-performance piping solutions.
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why Super Duplex 32750 Flanges 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: 550 MT / Month
- Export Experience: 10+ Years
- Countries Served: 50+
- Annual Export Volume: 5,530 MT
Table of Contents
- 1. What is Super Duplex 32750 Flanges
- 2. How to Choose the Right Manufacturer
- 3.Comparison of Super Duplex 32750 Flanges
- 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 32750 Flanges
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 32750 Flanges
| 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 32750 Flanges
- ✔ High resistance to pitting and crevice corrosion
- ✔ Excellent mechanical properties at elevated temperatures
- ✔ Outstanding welded strength and toughness
- ✔ Enhanced durability in harsh environments
- ✔ Versatile applications in oil and gas industries
- ✔ Cost-effective solution for demanding environments
Technical Overview of Super Duplex 32750 Flanges
| Product | Composition | Usage | Standards |
|---|---|---|---|
| Super Duplex 32750 Flanges | 25% Chromium, 7% Nickel, 4% Molybdenum, with trace elements | Used in high-pressure applications, chemical processing, and oil & gas industries | ASTM A182, ASME SA-182, EN 10204 |
| Super Duplex 32750 Flanges | Excellent resistance to pitting and crevice corrosion | Suitable for subsea applications and environments with high chloride concentrations | API 6A, NACE MR0175 |
| Super Duplex 32750 Flanges | High strength and durability, with a yield strength of 550 MPa | Ideal for pressure vessels, heat exchangers, and pipelines | ISO 15156, ASTM A240 |
Specifications Table
| Material | Super Duplex Stainless Steel |
|---|---|
| Grades | UNS S32750 |
| Standard | ASME/ANSI B16.5 |
| Size Range | 1/2" to 24" |
| Length | Customizable |
| Form | Flanges |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| Super Duplex 32750 | 25% Cr, 7% Ni, 4.5% Mo, 0.3% N | Petrochemical, Oil & Gas, Marine Applications |
| Super Duplex 2507 | 25% Cr, 7% Ni, 4% Mo, 0.3% N | Desalination Plants, Pulp and Paper Industry |
| Super Duplex 32760 | 27% Cr, 7% Ni, 3.5% Mo, 0.25% N | Offshore Oil Production, Chemical Processing |
| Super Duplex 31803 | 22% Cr, 5% Ni, 3% Mo, 0.17% N | Pipelines, Heat Exchangers, Storage Tanks |
| Super Duplex 32750N | 25% Cr, 7% Ni, 5.5% Mo, 0.4% N | Pharmaceuticals, Food Processing, Marine Engineering |
Available Sizes of Super Duplex 32750 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 | 800 |
Chemical Properties of Super Duplex 32750 Flanges
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 24.0 - 26.0 |
| Nickel (Ni) | 6.0 - 8.0 |
| Molybdenum (Mo) | 3.5 - 4.5 |
| Tungsten (W) | 0.5 - 1.0 |
| Iron (Fe) | Balance |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 0.8 max |
| Carbon (C) | 0.03 max |
Mechanical Properties of Super Duplex 32750 Flanges
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 800 - 1000 |
| Yield Strength (MPa) | 550 - 750 |
| Elongation (%) | 25 |
| Hardness (HB) | 285 - 350 |
| Impact Toughness (J @ -40°C) | ≥ 70 |
Super Duplex 32750 Flanges – Physical & Thermal Properties
Density of Super Duplex 32750 Flanges
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.8 g/cm³ | 0.28 lb/in³ |
Melting Point of Super Duplex 32750 Flanges
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1350 - 1400 °C | 2462 - 2552 °F |
Specific Heat of Super Duplex 32750 Flanges
| Specific Heat of Super Duplex 32750 Flanges | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Annealed |
| 480 | 100 - 300 | Annealed |
| 460 | 300 - 500 | Annealed |
Electrical Resistivity of Super Duplex 32750 Flanges
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.75 | 20 | As-rolled condition |
| 0.80 | 100 | |
| 0.85 | 200 | |
| 0.90 | 300 | |
| 0.95 | 400 | |
Equivalent of Super Duplex 32750 Flanges
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A890 | 1.4410 | S32750 |
| ASTM A240 | 1.4501 | S32760 |
Manufacturing Process & Heat Treatment of Super Duplex 32750 Flanges
Annealing
The annealing process for Super Duplex 32750 flanges involves heating the material to a temperature range of 1020°C to 1100°C, followed by controlled cooling. This process helps to relieve internal stresses, improve ductility, and enhance the overall mechanical properties of the steel.
Forging
Forging of Super Duplex 32750 flanges is performed at elevated temperatures, typically between 1000°C and 1150°C. This process enhances the strength and toughness of the material while ensuring a fine grain structure. The flanges are shaped into the desired configuration through a combination of hammering and pressing techniques.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 1050°C - 1100°C | Oil | To increase hardness and strength |
| Tempering | 600°C - 800°C | Air | To reduce brittleness and improve toughness |
| Solution Annealing | 1020°C - 1100°C | Water | To dissolve precipitates and restore ductility |
The manufacturing and heat treatment processes for Super Duplex 32750 flanges are critical in achieving the desired mechanical properties and corrosion resistance, ensuring their reliability in demanding applications.
Various Types
Super Duplex 32750 Slip-On Flanges
- ANSI B16.5, Sizes: 1" to 24"
- Condition: Hot Finished, Cold Drawn
- Applications: Oil & Gas, Chemical Processing
Super Duplex 32750 Weld Neck Flanges
- ANSI B16.5, Sizes: 1" to 30"
- Condition: Hot Finished, Annealed
- Applications: Marine Engineering, Desalination Plants
Super Duplex 32750 Blind Flanges
- ANSI B16.5, Sizes: 1" to 24"
- Condition: Hot Finished
- Applications: Pressure Vessels, Piping Systems
Super Duplex 32750 Socket Weld Flanges
- ANSI B16.5, Sizes: 1/2" to 4"
- Condition: Cold Drawn
- Applications: Oil Refineries, Petrochemical Plants
Applications & Uses
- Oil & Gas Industry
- Petrochemical Plants
- Water Treatment Plants
- Pharmaceutical Industry
- Food & Beverage Industry
- Automobile Industry
Industries We Serve
Our alloys are widely used across:
- Steel Plants
- Foundries & Casting Units
- Automobile Industry
- Shipbuilding & Marine
- Oil & Gas
- Engineering Components
- Heavy Industrial Machinery
Latest Price List of Super Duplex 32750 Flanges
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| Super Duplex 32750 | 3 mm | $5.50 – $6.00 | ₹450 – ₹500 |
| Super Duplex 32750 | 6 mm | $5.80 – $6.30 | ₹470 – ₹520 |
| Super Duplex 32750 | 10 mm | $6.00 – $6.50 | ₹490 – ₹540 |
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 32750 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
Cities We Suppllied In India
We exported to 50+ countries worldwide.
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards. Below are our key certifications.
GST Certificate
ISO 9001:2015
ISO 1002:2018
Udyam MSME Registration
Quality Inspection & Testing
At Ragnar Metals and Tubes, all products are checked through strict quality inspection and testing to meet international standards such as ASTM, ASME, EN, and DIN. This ensures consistent quality, accurate dimensions, and full material traceability.
- ✔ Chemical composition testing
- ✔ Mechanical tests such as tensile and hardness
- ✔ Dimensional inspection as per standard tolerances
- ✔ PMI, ultrasonic, and visual inspection (if required)
- ✔ EN 10204 3.1 / 3.2 test certificates
- ✔ Third-party inspection by SGS, TUV, BV, or Lloyd’s
Our quality systems support reliable supply for oil & gas, petrochemical, power, marine, and heavy engineering projects.
Our Products Types
People Also Search For
- Super Duplex 2507 Flanges
- Duplex 2205 Flanges
- Stainless Steel Flanges
- Super Duplex 32760 Pipe
- High-Pressure Flanges
Frequently Asked Questions
About Ragnar Metals and Tubes
- ✔ Decades of experience in stainless steel, carbon steel, and alloy steel manufacturing
- ✔ ISO 9001:2015 certified company ensuring strict quality control standards
- ✔ Specialized in cold drawn pipes and tubes processing
- ✔ State-of-the-art manufacturing facilities with modern machinery
- ✔ Precision-engineered products with consistent quality and reliability
- ✔ Customized steel solutions as per client drawings and specifications
- ✔ Compliance with international industry standards
- ✔ Trusted supplier for critical industrial applications worldwide