Home > Pipe Fittings > Stainless Steel 347H Pipe Fittings
Stainless Steel 347H pipe fittings are made in Dubai and India for high-temperature piping systems that need resistance to intergranular corrosion and high creep strength. Grade 347H is a stabilized austenitic stainless steel with a higher carbon content, making it ideal for long-term exposure to elevated temperatures. These fittings, including elbows, reducers, tees, and caps, are produced according to ASTM A403 standards and are key in critical industrial flow systems. With excellent weldability and durability, SS 347H pipe fittings are widely used in power generation, petrochemical, and thermal processing industries, where mechanical reliability and thermal resistance are crucial for extended use.
Stainless Steel 347H has 17–20% chromium, 9–13% nickel, and higher carbon content (0.04–0.10%) than 347 for better high-temperature strength. It is stabilized with columbium (niobium), which prevents carbide precipitation during welding. The tensile strength is about 515–620 MPa, with a yield strength of 205–275 MPa and elongation around 35%. SS 347H maintains its mechanical strength and oxidation resistance at temperatures up to 870°C. Its enhanced creep strength and ability to resist stress rupture make it suitable for pressure-containing pipe systems in harsh thermal conditions.
| Grades | 201, 202, 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316L, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L |
| Type | Seamless / Welded / Fabricated |
| Bending Radius | R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Size | ½”NB to 48″NB in |
| Schedule | Sch 10s, 40s, 80s, 160s, XXS. |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 347H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | – | 8 – 10.5 | – |
| Density | 8.0 g/cm3 |
| Melting Point | 1400 °C (2550 °F) |
| Tensile Strength | Psi – 75000 , MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000 , MPa – 205 |
| Elongation | 35 % |
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We ensures the very high standards with respect to quality in Stainless Steel 347H Pipe Fittings with rigorous tests and certifications. All products are given comprehensive inspection tests, including dimensional checks, mechanical tests, and corrosion resistance tests, and we provide relevant MTCs in order to ensure strict adherences to international standards and client requirements.
Stainless Steel 347H pipe fittings are high-temperature-resistant components made from stainless steel 347H, offering excellent strength, oxidation resistance, and durability, ideal for demanding industrial and aerospace applications.
SS Butt Weld 347H pipe fittings are high-temperature-resistant components used to join pipes through welding. Made from stainless steel 347H, they provide strength, durability, and corrosion resistance in extreme environments.
SS 347H Socket Weld pipe fittings are high-temperature components used to connect pipes via a socket weld. Made from stainless steel 347H, they offer excellent strength, corrosion resistance, and durability.
Stainless Steel 347H seamless fittings are high-temperature-resistant components with no welds, providing superior strength, durability, and corrosion resistance, ideal for demanding industrial and aerospace applications.
SS 347H cross pipe fittings are high-temperature-resistant components that connect four pipes at a junction. Made from stainless steel 347H, they offer strength, durability, and resistance to oxidation and corrosion.
Stainless Steel 347H tee fittings are high-temperature-resistant components that create a T-junction, connecting three pipes. Made from stainless steel 347H, they provide strength, durability, and resistance to oxidation and corrosion.
SS 347H pipe fittings are commonly used in high-temperature, high-pressure applications like heat exchangers, superheaters, steam lines, and piping systems in petrochemicals. Their resistance to thermal fatigue and carbide precipitation makes them suitable for continuous-service environments where welded joints endure elevated temperatures. Industries such as oil and gas, refineries, power plants, and boiler systems depend on these fittings for secure and leak-proof flow connections. Their exceptional mechanical performance ensures structural integrity in tough operations, especially during thermal cycling, pressure fluctuations, and exposure to aggressive chemicals.
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