Stainless Steel 321 Flanges Exporter in India, Ferro Fittings and Alloys specializes in manufacturing and exporting high-quality flanges made from the durable Stainless Steel 321 grade. These flanges are designed to provide exceptional resistance to corrosion and oxidation, making them ideal for various industrial applications. Based in Mumbai, India, Ferro Fittings and Alloys is committed to delivering superior products tailored to meet the exact needs of our global customers.
Our Stainless Steel 321 flanges adhere to recognized standards, including ASTM A182, ASME B16.5, and EN 1092-1. They are available in size ranges from DN 15 to DN 600 (NPS ½ to NPS 24) and pressure ratings from Class 150 to 2500 (PN10 to PN400). These flanges can accommodate temperatures ranging from -196°C to 800°C, and are compatible with various end connections such as weld neck, slip-on, and blind configurations, ensuring versatility across numerous applications.
Industries that commonly utilize our Stainless Steel 321 flanges include Oil & Gas, Petrochemical, Chemical Processing, Power Generation, Pharmaceutical Manufacturing, Shipbuilding, and Water Treatment. Our products are widely exported to countries such as the UAE, Saudi Arabia, Qatar, the UK, and the USA, and are often used in EPC projects, LSTK contracts, and maintenance operations, demonstrating our global reach and industry relevance.
Quality is paramount at Ferro Fittings and Alloys, as evidenced by our ISO 9001:2015 certification and the availability of EN 10204 3.1 / 3.2 Mill Test Certificates. We conduct comprehensive in-house testing, including PMI, Hydrostatic, Hardness, Impact (Charpy), Ultrasonic Testing (UT), and Liquid Penetrant Testing (LPT). Additionally, our products comply with NACE MR 0175 / ISO 15156 standards for sour service applications. Request a free MTC sample or get a quick quote via WhatsApp.
Choosing Ferro Fittings and Alloys means opting for a partner with a competitive lead time of just 2–4 weeks, no minimum order quantity restrictions, and ample stock availability. We offer FOB Mumbai, CIF, and CFR shipping with complete export documentation to ensure a smooth process. For inquiries, please contact us at +91-86550-39959, reach out via WhatsApp at wa.me/+918655039959, or email us at export@ferrofittings.com.
Trusted manufacturer & exporter of Flanges, Pipe Fittings and Valves in 30+ countries.
1–4 weeks depending on size, grade & quantity.
Urgent and bulk orders handled efficiently.FOB, CIF, CFR, EXW, DDP (Incoterms 2020).
Door-to-port and door-to-door delivery available.Sea Freight / Air Cargo / Express Courier.
Complete export documentation & tracking support.Trusted by EPC contractors, procurement teams, and global industrial buyers across multiple countries for certified supply and reliable delivery.
Direct supply with bulk stock availability to reduce your overall project cost.
ISO 9001, ISO 14001, ISO 45001, PED certified with full test certificates.
Safe, sea-worthy packaging ensuring damage-free international delivery.
Selecting the right partner for Stainless Steel 321 Flanges Exporter in india is critical for ensuring product quality, long-term performance, and successful project execution. As a trusted manufacturer and exporter, Ferro Fittings and Alloys delivers high-quality materials meeting international standards and global industry requirements.
Understand the key differences between local suppliers, trading companies, and professional manufacturers & exporters like Ferro Fittings and Alloys.
| Evaluation Factor | Small Local Suppliers | Trading Companies | Ferro Fittings and Alloys |
|---|---|---|---|
| Manufacturing Control | Limited or outsourced production | Dependent on third-party mills | Direct manufacturing with strict quality control |
| Standards Compliance | Basic or local standards | Varies depending on supplier | ASTM, ASME, ANSI, EN, ISO certified products |
| Inspection & Certification | Limited documentation | Inconsistent certification | MTC, TPI, and full export documentation provided |
| Export Capability | Mostly domestic supply | Moderate export handling | Global exports with complete logistics support |
| Delivery Reliability | Uncertain timelines | Depends on sourcing chain | Consistent lead times with ready stock availability |
| Project Risk Level | High | Medium | Low |
| Product | Composition | Standard | Application |
|---|---|---|---|
| Stainless Steel 321 Flanges | Carbon: max 0.08%, Chromium: 17-19%, Nickel: 9-12%, Titanium: 5 times the carbon content | ASTM A182, ASME SA182 | Used in high-temperature applications, chemical processing, and pressure vessels |
| Stainless Steel 321 Flanges | Carbon: max 0.08%, Chromium: 17-19%, Nickel: 9-12%, Titanium: 5 times the carbon content | EN 10204 3.1 | Ideal for applications requiring resistance to intergranular corrosion |
| Stainless Steel 321 Flanges | Carbon: max 0.08%, Chromium: 17-19%, Nickel: 9-12%, Titanium: 5 times the carbon content | DIN 2576 | Suitable for use in aerospace and automotive industries |
Ferro Fittings and Alloys is a leading Stainless Steel 321 Flanges exporter in India, committed to providing high-quality products that meet international standards. Our flanges are manufactured according to ASTM, ASME, and EN standards, ensuring their reliability in various applications. With in-house testing capabilities such as PMI, Hardness, Hydrostatic, and Radiography, we guarantee the integrity and performance of our products. We offer a minimum order quantity of just one piece, with lead times of 2-4 weeks, accommodating urgent orders as needed. Contact us for a quick quote or request a free sample MTC to experience our quality firsthand.
SS 321 flanges are a titanium-stabilized austenitic stainless-steel flange material, particularly useful where the flange will see elevated temperatures and welding.
The most common designation is ASTM A182 Grade F321 / UNS S32100. ASTM A182 is the relevant forging specification for flanges and other pressure-containing forged components.
Our F321 flange range includes Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint, Long Weld Neck, Orifice, Reducing, Spectacle Blind and custom-designed flanges, manufactured or supplied according to applicable international standards and customer specifications.
Typical dimensional and rating standards include ASME B16.5, ASME B16.47, ASME B16.36, ASME B16.48, EN 1092-1, DIN, JIS and applicable GB standards, depending on the project.
| Specification | SS321 Flanges |
|---|---|
| Material | Stainless Steel |
| Grades | SS321 |
| ASTM Grades | ASTM A182 F321 |
| ASME Material Specification | ASME SA182 F321 |
| UNS | S32100 |
| EN Grades | 1.4541 / X6CrNiTi18-10 |
| JIS Grades | SUS321 |
| Standards | ASME B16.5, ASME B16.47, EN 1092-1, JIS B2220 and other applicable standards |
| Size | NPS ½" to 24" (DN15–DN600) as per ASME B16.5; larger sizes NPS 26" to 60" available as per applicable standards ASME B16.47 |
| Pressure Rating | ASME Class 150–2500; PN ratings as per applicable EN/DIN standards |
| Flange Types | Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint, Long Weld Neck, Orifice, Reducing, Spectacle Blind |
| Facing | RF, FF, RTJ, Male & Female, Tongue & Groove, as applicable |
| Bore | Standard pipe schedules or custom bore as specified |
| Manufacturing | Forged / Hot Forged & Machined |
| Heat Treatment | Solution Heat Treatment as per applicable material specification |
| Testing | Chemical, Mechanical, Dimensional, Visual, PMI and NDT as specified |
| Certification | EN 10204 3.1 / 3.2 and Third-Party Inspection, as required |
| Applications | Oil & Gas, Chemical, Petrochemical, Marine, Pharmaceutical, Food, Water Treatment, Power and Process Industries |
| Grade / UNS | Common Name | Key Feature | Typical Application |
|---|---|---|---|
| S32100 | Stainless Steel 321 | Excellent resistance to intergranular corrosion | Used in high-temperature applications such as aircraft exhaust systems |
| S32109 | Stainless Steel 321H | Higher carbon content for improved high-temperature strength | Ideal for applications in the petrochemical industry |
| S32101 | Stainless Steel 321L | Low carbon variant for reduced susceptibility to carbide precipitation | Used in food processing and chemical processing industries |
| S32103 | Stainless Steel 321Ti | Titanium stabilized for enhanced resistance to sensitization | Commonly used in heat exchangers and pressure vessels |
| S32104 | Stainless Steel 321F | Free machining variant for easier fabrication | Used in applications requiring intricate machining |
| Size / DN | Pressure Class | Wall Thickness | Length |
|---|---|---|---|
| 15 | 150 | 2.0 mm | 100 mm |
| 20 | 150 | 2.0 mm | 100 mm |
| 25 | 150 | 2.5 mm | 100 mm |
| 32 | 150 | 2.5 mm | 100 mm |
| 40 | 150 | 3.0 mm | 100 mm |
| 50 | 150 | 3.0 mm | 100 mm |
Typical specification limits, wt.%:
| Element | ASTM A182 F321 requirement |
|---|---|
| Carbon (C) | 0.08 max |
| Silicon (Si) | 1.00 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Chromium (Cr) | 17.00–19.00 |
| Nickel (Ni) | 9.00–12.00 |
| Nitrogen (N) | 0.10 max |
| Titanium (Ti) | 5 × (C + N) min, 0.70 max |
| Iron (Fe) | Balance |
The Ti requirement is the important feature of 321. Titanium stabilizes the steel by preferentially combining with carbon, reducing chromium-carbide precipitation and the associated risk of intergranular corrosion after welding or exposure to elevated temperatures.
For forged flanges to ASTM A182 F321, typical minimum requirements are:
| Property | Requirement |
|---|---|
| Tensile strength | 515 MPa min |
| Yield strength, 0.2% | 205 MPa min |
| Elongation | 30% min |
| Hardness | 217 HBW max / 95 HRB max |
| Property | Value (Metric) | Value (Imperial) |
|---|---|---|
| Density | 7.98 g/cm³ | 0.288 lb/in³ |
| Melting Point | 1450 - 1510 °C | 2642 - 2750 °F |
| Specific Heat | 500 J/(kg·K) | 0.119 BTU/(lb·°F) |
| Thermal Conductivity | 16.2 W/(m·K) | 112 BTU·in/(hr·ft²·°F) |
| Electrical Resistivity | 0.72 µΩ·m | 0.72 µΩ·in |
| Standard | Equivalent designation |
|---|---|
| ASTM/AISI | 321 |
| ASTM forging | A182 F321 |
| UNS | S32100 |
| EN | 1.4541 |
| EN designation | X6CrNiTi18-10 |
| JIS | SUS321 |
| BS | 321S31 |
| AFNOR | Z6CNT18-10 |
| DIN | X10CrNiTi18-9 / X6CrNiTi18-10 |
| Russian/GOST | 08Kh18N10T |
SS321 flanges are particularly suitable for:
321 is commonly selected for applications where ordinary 304 stainless steel may suffer sensitization after prolonged exposure to elevated temperature.
At Ferro Fittings and Alloys, we ensure that our raw materials for Stainless Steel 321 Flanges meet stringent quality standards. We source high-quality stainless steel that complies with ASTM A240 and ASME SA240 specifications. Each batch undergoes rigorous inspection for chemical composition and mechanical properties, ensuring that only the best materials are used in our manufacturing process.
The forming and fabrication of Stainless Steel 321 Flanges involve advanced techniques such as hot and cold working processes. Our skilled technicians use CNC machines for precision cutting and shaping. The flanges are manufactured in various sizes, including 1/2" to 24" nominal pipe sizes, and meet the dimensional tolerances outlined in ASME B16.5. This ensures a perfect fit for your piping systems.
| Process | Temperature (°C) | Medium | Purpose |
|---|---|---|---|
| Solution Annealing | 1020 - 1100 | Air | To relieve internal stresses and enhance corrosion resistance |
| Stabilization Treatment | 870 - 900 | Air | To improve resistance to intergranular corrosion |
Our quality inspection process includes multiple testing methods such as Positive Material Identification (PMI), hardness testing, hydrostatic testing, and Charpy impact tests. Each Stainless Steel 321 Flange is accompanied by a Material Test Certificate (MTC) in compliance with EN 10204 3.1 / 3.2, ensuring that they meet international standards. We are ISO 9001:2015 certified, providing our customers with confidence in our products. Contact us for a quick quote or request a free sample MTC today!
| Grade | Size / Dimension | Price (USD/Kg) | Price (INR/Kg) |
|---|---|---|---|
| SS 321 | 1/2" (15 mm) | $4.50 | ₹370 |
| SS 321 | 2" (50 mm) | $4.80 | ₹395 |
| SS 321 | 4" (100 mm) | $5.20 | ₹430 |
| SS 321 | 8" (200 mm) | $6.50 | ₹535 |
Note: Prices are indicative and subject to change based on quantity, raw material costs, and delivery terms. Contact us for the latest quotation.
Our multiple locations and strong logistics network make it easy for customers across India to source Stainless Steel 321 Flanges Exporter in india from Ferro Fittings and Alloys. Contact us for prompt delivery at competitive prices.
Ferro Fittings and Alloys exports Stainless Steel 321 Flanges Exporter in india to 50+ countries worldwide. We handle all export documentation, sea-worthy packaging, and logistics to ensure on-time, damage-free delivery anywhere in the world.
Explore more industrial materials and pipe fittings from Ferro Fittings and Alloys.
Fill in your requirements and our sales team will respond within 24 hours with pricing, availability, and delivery details.
Ferro Fittings and Alloys is a leading ISO 9001:2015 certified manufacturer, supplier, and exporter of high-quality pipe fittings, valves, flanges, round bars, sheets, plates, pipes, tubes, and expansion bellows. Based in Mumbai, India, we serve industrial sectors including oil & gas, petrochemical, power generation, pharmaceuticals, marine, and construction.
We supply a comprehensive range of grades — Stainless Steel, Duplex & Super Duplex, Carbon Steel, Alloy Steel, Inconel, Hastelloy, Monel, Titanium, Nickel, and Nimonic Alloys — to customers in 50+ countries. Our products are manufactured as per ASTM, ASME, ANSI, MSS, BS, DIN, and EN standards with EN 10204 3.1/3.2 Mill Test Certificates.
📍 Address: 6th Kumbharwada, Shop No. 154, Near Alankar Cinemas, Mumbai 400 004
📞 Mr. Aashit Shah: +91 86524 99959
📞 Mr. Bhavin Shah: +91 86550 39959
📧 Sales: export@ferrofittings.com
📧 Export: export@ferrofittings.com
📧 Gmail: inquiry@ferrofittings.com
