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Aditya Stainless stands out as a reliable manufacturer and supplier of Stainless Steel 348/348H Forged Fittings, delivering high-performance solutions tailored for tough industrial applications. Located in Kolkata, India, we offer a diverse selection of forged fittings, including elbows, tees, couplings, unions, and reducers, all designed to comply with ASTM A182 and ASME B16.11 standards. The SS 348/348H is stabilized with columbium (niobium), which gives it exceptional resistance to intergranular corrosion and impressive mechanical strength at high temperatures. These forged fittings are perfect for high-pressure, high-temperature, and corrosive environments in industries like chemical processing, aerospace, power generation, and pharmaceuticals.
Stainless Steel 348/348H Forged Fittings are mainly made up of 17–20% chromium and 8–12% nickel, with columbium (niobium) added to boost their resistance to intergranular corrosion. The Type 348H variant features a higher carbon content (up to 0.10%), enhancing its strength at elevated temperatures. These fittings showcase a tensile strength of 515 MPa, a yield strength of 205 MPa, and an elongation of 35%, making them perfect for high-temperature applications. Their outstanding weldability, toughness, and thermal stability ensure they perform reliably in both corrosive and high-stress environments.
| STANDARD | Stainless Steel 348/348H Forged Fittings |
| EN | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| JIS | SUS 316L |
| BS | 316S11 / 316S13 |
| UNS | S31603 |
| WERKSTOFF NO. | 1.4404 / 1.4435 |
| AFNOR | Z7CND17‐11‐02 |
| GOST | 03Ch17N14M3 / 03Ch17N14M2 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 348/348H | 0.08 max | 2 max | 0.75 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 10 | – |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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At Aditya Stainless, all stainless steel 348/348H forged fittings are rigorously tested to ensure they meet international quality standards. Each product is tested for durability, corrosion resistance and high temperature performance. Accredited by recognized authorities, we issue Material Testing Reports (MTRs) for our fittings, ensuring reliability and customer confidence with every purchase.
Corrosion-resistant and ideal for high-temperature applications, these fittings provide robust, leak-proof connections. Common sizes range from ½” to 4″ in diameter. Socket weld fittings are used in industries like chemical processing and petrochemicals for their strength and reliability.
Offering excellent corrosion resistance, these fittings are designed for high-stress and high-temperature applications. Available sizes typically range from ¼” to 2″ in diameter. They ensure secure and leak-free connections and are ideal for use in oil and gas industries.
Highly resistant to corrosion, this elbow facilitates changes in direction with a 45-degree bend. Standard sizes range from ½” to 4″ in diameter. It redirects its flow in pipelines, especially in chemical and petrochemical industries.
Featuring superior corrosion resistance, this tee allows for branching off a main line. Sizes generally range from ¼” to 2″ in diameter. They are commonly used in high-temperature and high-pressure environments, ensuring durability and reliability in critical applications.
Known for its corrosion resistance, this half coupling is used to join pipes or tubes of the same diameter. Typical sizes range from ¼” to 2″ in diameter. It is essential for creating extensions or connections in industrial piping systems.
Corrosion-resistant and durable, this cross-fitting allows four-way connections in piping systems. Available in sizes from ½” to 4″ in diameter. It’s used in complex pipeline networks to facilitate multiple branch connections, especially in chemical and petrochemical industries.
Stainless Steel 348/348H Forged Fittings find extensive use in industries that demand materials with exceptional thermal stability, oxidation resistance, and mechanical integrity. They are commonly used in nuclear reactor components, boiler and pressure vessel parts, exhaust systems, and chemical processing equipment. Their ability to endure high-temperature conditions makes them ideal for heat exchangers, refinery piping, and aerospace systems. Additionally, these fittings are utilized in pharmaceuticals and food processing, where corrosion resistance and hygienic conditions are crucial.
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