Stainless Steel 321 Flanges Exporter in Oman, Ferro Fittings and Alloys specializes in manufacturing and exporting high-quality flanges made from stainless steel grade 321. Known for its excellent corrosion resistance and high-temperature strength, this product is essential in various industrial applications. Based in Mumbai, India, we pride ourselves on our commitment to quality and customer satisfaction, making us a preferred choice for clients across the globe.
Our stainless steel 321 flanges comply with stringent standards such as ASTM A182, ASME B16.5, and EN 1092-1. These flanges are available in sizes ranging from DN 15 to DN 600 (NPS ½ to NPS 24) and pressure ratings from Class 150 to Class 2500 (PN10 to PN400). They can be supplied with various end connections, including raised face, flat face, and ring-type joints, and are suitable for temperature ranges up to 900°C, ensuring versatility across numerous applications.
Industries such as Oil & Gas, Petrochemical, Chemical, Power, Pharmaceutical, and Shipbuilding rely on stainless steel 321 flanges for their durability and performance. Our products are particularly in demand in regions like the UAE, Saudi Arabia, and Qatar, where they are used in various project types, including EPC contracts, LSTK projects, and routine maintenance. The reliability of our flanges makes them ideal for critical applications in these sectors.
With our ISO 9001:2015 certification and availability of EN 10204 3.1 / 3.2 Mill Test Certificates, we ensure that our products meet the highest quality standards. Our in-house testing facilities conduct PMI, Hydrostatic, Hardness, Impact (Charpy), and UT tests to guarantee product integrity. Additionally, our compliance with NACE MR 0175 / ISO 15156 ensures suitability 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 competitive lead time of just 2–4 weeks, with no minimum order quantity restrictions and readily available stock. We offer flexible shipping options including FOB Mumbai, CIF, and CFR, along with complete export documentation for your peace of mind. For inquiries, feel free to reach us at +91-86550-39959, 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 Oman 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 |
Contact us for a quick quote on Stainless Steel 321 Flanges, or request a free sample MTC to experience our quality firsthand.
| Product | Composition | Standard | Application |
|---|---|---|---|
| Stainless Steel 321 Flanges | Fe, C (max 0.08%), Cr (17.0-19.0%), Ni (9.0-12.0%), Ti (5xC min - 0.70% max) | ASTM A182, ASME SA182 | Used in high-temperature applications, chemical processing, and aircraft exhaust systems. |
| Stainless Steel 321 Flanges | Fe, C (max 0.08%), Cr (17.0-19.0%), Ni (9.0-12.0%), Ti (5xC min - 0.70% max) | EN 10088-1, DIN 1.4541 | Ideal for applications requiring resistance to corrosion and oxidation. |
| Stainless Steel 321 Flanges | Fe, C (max 0.08%), Cr (17.0-19.0%), Ni (9.0-12.0%), Ti (5xC min - 0.70% max) | ANSI B16.5, MSS SP-44 | Commonly used in the oil and gas industry and power generation facilities. |
Ferro Fittings and Alloys is a leading Stainless Steel 321 Flanges exporter in Oman, providing high-quality products that meet international standards. Our flanges are manufactured with precision, ensuring excellent dimensional tolerances and surface finishes. We conduct thorough in-house testing, including PMI and Hydrostatic tests, to guarantee the integrity and performance of our flanges. With a lead time of just 2-4 weeks and the capability to accommodate urgent orders, we ensure that our clients receive their products promptly. Our ISO 9001:2015 certification and compliance with multiple international standards provide assurance of our commitment to quality. Contact us for a quick quote or request a free sample MTC today!
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 | Aerospace, chemical processing, and oil and gas industries |
| S32109 | Stainless Steel 321H | Higher carbon content for improved high-temperature strength | High-temperature applications such as furnace parts and heat exchangers |
| S32101 | Stainless Steel 321L | Low carbon version for enhanced weldability | Welded structures in corrosive environments |
| S32103 | Stainless Steel 321Ti | Titanium stabilized for better resistance to sensitization | Applications in high-temperature environments and corrosive media |
| S32104 | Stainless Steel 321N | Nitrogen added for improved strength | Structural applications in the petrochemical industry |
| 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 | 7,990 kg/m³ | 0.288 lb/in³ |
| Melting Point | 1,600 °C | 2,912 °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 | 0.00000072 Ω·m |
| 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 comply with international standards such as ASTM A240 and ASME SA240. Each batch is subjected to rigorous inspection, including Positive Material Identification (PMI) tests, to verify the chemical composition and ensure it meets the required specifications for corrosion resistance and mechanical properties.
Our fabrication process involves advanced techniques such as hot forging and cold working to create Stainless Steel 321 Flanges in various sizes and dimensions, including standard ANSI/ASME B16.5 and B16.47. We manufacture flanges with diameters ranging from 1/2 inch to 60 inches and pressure classes from 150 to 2500. Each flange is crafted to ensure precise tolerances as per ASTM standards, ensuring a perfect fit for your application.
| Process | Temperature (°C) | Medium | Purpose |
|---|---|---|---|
| Solution Annealing | 1050 - 1100 | Air | To enhance corrosion resistance and relieve internal stresses |
| Stabilization | 850 - 900 | Air | To improve resistance to intergranular corrosion |
Our quality control process includes multiple testing methods such as Hydrostatic Testing, Hardness Testing, Impact Testing (Charpy), and Non-Destructive Testing (NDT) methods like Radiography, Ultrasonic Testing (UT), Liquid Penetrant Testing (LPT), and Magnetic Particle Testing (MPT). We provide Material Test Certificates (MTC) compliant with EN 10204 3.1 / 3.2, ensuring our clients receive products that meet stringent quality requirements. For urgent requirements, we have stock available for quick delivery. Contact us for a quick quote or request a free sample MTC.
| Grade | Size / Dimension | Price (USD/Kg) | Price (INR/Kg) |
|---|---|---|---|
| SS 321 | 1/2" (15 mm) | $4.50 | ₹370 |
| SS 321 | 1" (25 mm) | $4.20 | ₹345 |
| SS 321 | 2" (50 mm) | $4.00 | ₹330 |
| SS 321 | 3" (75 mm) | $3.80 | ₹310 |
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 Oman from Ferro Fittings and Alloys. Contact us for prompt delivery at competitive prices.
Ferro Fittings and Alloys exports Stainless Steel 321 Flanges Exporter in Oman 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
