High-quality stainless steel 347 pipes designed for exceptional performance in corrosive and hot conditions are available from Vinit Stainless, a reputable manufacturer and supplier in Chennai, India. Even after welding, SS 347, an austenitic stainless steel stabilised by niobium, offers exceptional resistance to intergranular corrosion. Vinit Stainless guarantees exact dimensions, consistent quality, and outstanding durability by using premium-grade materials and cutting-edge production techniques. Our 347 pipes are appropriate for crucial applications in a variety of sectors, including power plants, refineries, chemical processing, aerospace, and heat exchanger systems, because they come in a variety of sizes and specifications.
347 Stainless Steel Niobium (columbium), which stabilises the alloy against sensitisation and stops carbide precipitation during welding, is added to pipes, which are composed of 17–19% chromium and 9–13% nickel. This improves the pipe’s ability to withstand intergranular corrosion. The alloy has a yield strength of about 205 MPa and a tensile strength of 515–750 MPa. At temperatures as high as 870°C, SS 347 provides exceptional creep resistance without compromising structural integrity. It is perfect for applications subjected to heat and corrosive conditions because of its excellent weldability, toughness, and thermal stability.
| Standard | ASTM A312, A358 / ASME SA312, SA358 |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated Pipes |
| Form | Round, Square, Rectangular, Oval, Hydraulic Etc |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded |
| Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 18.00 – 20.00 | 3.00 – 4.00 | 11.00 – 15.00 | 57.845 min |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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SS 347 seamless pipe is a high-quality, stainless steel pipe made from alloy 347. It offers excellent resistance to high temperatures and corrosion, suitable for aerospace, chemical, and industrial applications.
SS 347 welded pipe is a stainless steel pipe made from alloy 347, featuring excellent resistance to corrosion and high temperatures. Ideal for applications in aerospace, chemical processing, and industrial settings.
SS 347 ERW (Electric Resistance Welded) pipe is a stainless steel pipe made from alloy 347. It offers good resistance to corrosion and high temperatures, suitable for various industrial applications.
SS 347 EFW (Electric Fusion Welded) pipe is made from stainless steel alloy 347, offering superior resistance to high temperatures and corrosion. It’s ideal for demanding applications in industries like aerospace and chemical processing.
SS 347 rectangular pipe is a stainless steel pipe made from alloy 347, providing excellent resistance to high temperatures and corrosion. It’s used in structural and industrial applications requiring strength and durability.
SS 347 square pipe is a stainless steel pipe made from alloy 347, offering robust resistance to high temperatures and corrosion. Ideal for structural and industrial applications requiring strength and durability.
347 Stainless Steel Applications involving constant exposure to high temperatures and corrosive environments make extensive use of pipes. Heat exchanger tubes, boiler and superheater parts, pressure vessels, and equipment used in high-temperature chemical processes are among the common applications. In welded systems, where its ability to withstand intergranular corrosion guarantees a long service life without requiring post-weld heat treatment, SS 347 is particularly advantageous. For their mechanical strength and stability in oxidising and aggressive chemical environments under high heat stress, 347 pipes are essential to industries like chemical manufacturing, power generation, oil and gas, refineries, and aerospace.
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