Lecong Stainless is a reputable manufacturer and supplier based in Da Nang, Vietnam, known for its top-notch Stainless Steel 348H Flanges that excel in high-temperature settings, durability, and resistance to corrosion. This particular grade of stainless steel, 348H, is titanium-stabilized and austenitic, which means it stands up remarkably well against intergranular corrosion, oxidation, and stress corrosion cracking, even when the heat is on. These flanges are crafted with precision to meet international standards, making them perfect for essential piping connections in power generation, chemical processing, and various industrial applications. Thanks to their state-of-the-art manufacturing facilities and strict quality control measures, Lecong Stainless guarantees that their Stainless Steel 348H Flanges will perform reliably in even the toughest environments.
The composition of Stainless Steel 348H Flanges mainly includes iron, chromium (17–19%), nickel (8–12%), and titanium for stabilization, along with manganese, silicon, and a carefully regulated amount of carbon. The titanium stabilization is key, as it prevents carbide precipitation during welding, which helps maintain long-lasting corrosion resistance and mechanical strength. In terms of mechanical properties, these flanges boast a tensile strength ranging from 515 to 750 MPa and a yield strength between 205 and 275 MPa, along with impressive creep and oxidation resistance at temperatures soaring up to 650–700°C. The austenitic structure contributes to their toughness, dimensional stability, and durability, especially under high-temperature and high-pressure conditions.
| 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) |
| 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 % |
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SS 348H blind flanges are designed to seal the end of pipes, providing a strong, corrosion-resistant barrier in high-temperature applications. They ensure system integrity and are ideal for maintenance and pressure containment.
SS 348H ring-type joint flanges offer superior sealing in high-pressure and high-temperature applications. Their precision-engineered design ensures leak-proof connections, making them ideal for demanding environments in industries like petrochemical and aerospace.
SS 348H forged flanges provide exceptional strength and durability, ideal for high-temperature and corrosive environments. Their forged construction ensures high structural integrity and reliability in critical industrial applications and piping systems.
We carry out robust quality tests on stainless steel 348H flanges to provide superior performance and reliability. The products undergo extensive inspection in-house. We facilitate third-party to facilitate when they are needed. Our focus is always on timely delivery to ensure our clients receive their orders without compromising quality or performance.
Stainless Steel 348H Flanges find their place in various industries that demand dependable, high-temperature, and corrosion-resistant connections. They’re commonly used in boilers, heat exchangers, high-pressure piping, and chemical processing facilities. In the petrochemical and power generation sectors, you’ll see them in reactor lines, process piping, and pressure vessel connections. Their toughness and thermal stability also make them a great fit for marine, aerospace, and industrial equipment applications. Plus, Stainless Steel 348H Flanges are utilized in food processing and pharmaceutical systems, where high-temperature performance is crucial.
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