Veer Flanges is a well-respected manufacturer and supplier of Stainless Steel 348H Flanges based in Kolkata, India. We specialize in providing high-performance flange solutions designed for high-temperature and high-stress applications. SS 348H is a stabilized austenitic stainless steel that includes niobium to prevent carbide precipitation, making it perfect for extended exposure to elevated temperatures. Our flanges meet international standards such as ASTM A182, ASME B16.5, and ANSI, ensuring they offer excellent mechanical strength, oxidation resistance, and durability. Veer Flanges caters to various industries, including petrochemical, power generation, heat exchangers, aerospace, and chemical processing, delivering precision-engineered flanges that perform reliably even in extreme conditions.
Stainless Steel 348H Flanges consist of 17–20% chromium, 8–11% nickel, and niobium (columbium) for stabilization, along with a higher carbon content (up to 0.10%) compared to standard 348, which enhances their high-temperature strength. These flanges boast a minimum tensile strength of 585 MPa, yield strength of 240 MPa, and an elongation of 35%. SS 348H is known for its excellent creep and stress rupture resistance, making it a great choice for high-heat environments. Its austenitic structure ensures superior formability, weldability, and resistance to intergranular corrosion, especially after welding or prolonged exposure to high temperatures.
| Standard | ASTM A182 / ASME SA182 |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges |
| Size | 1/2″ (15 NB) to 48″ (1200NB) |
| Class/Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
Veer Flanges, a leading supplier in Kolkata, India, offers an extensive selection of Stainless Steel 348H Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
Stainless Steel 348H Flanges are perfect for high-temperature and high-pressure applications, particularly in settings where thermal stability and corrosion resistance are essential. They are frequently used in boiler components, superheaters, heat exchangers, pressure vessels, and furnace parts. The alloy’s resistance to carbide precipitation makes it suitable for nuclear power systems, chemical reactors, and refinery operations. Additionally, SS 348H flanges find applications in thermal oxidizers, aerospace exhaust systems, and high-temperature steam service. Their ability to endure extreme thermal conditions makes them a reliable choice for demanding environments.
| SS 348H | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Yes, we offer custom sizes for Stainless Steel 348H Flanges to meet specific project needs. Our team at Veer Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@veerflanges.co.in.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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