Stainless Steel 347 Pipes are crafted from a niobium-stabilized austenitic stainless steel grade, specifically designed to resist intergranular corrosion, especially after being exposed to high temperatures. These pipes are known for their impressive strength, durability, and resistance to oxidation, making them ideal for tough thermal conditions. They deliver dependable performance in environments where temperature changes, stress, and corrosive substances are common. Thanks to their stability during welding and their ability to withstand long-term heat exposure, they are a go-to choice in industries like petrochemical, power generation, and industrial processing, where both mechanical strength and structural integrity are crucial.
Typically, Stainless Steel 347 Pipes consist of 17–19% chromium, 9–13% nickel, low carbon content, and niobium, which helps prevent carbide precipitation during welding or extended heating. This unique composition boosts their resistance to intergranular corrosion and enhances thermal stability. On the mechanical side, 347 pipes offer high tensile and yield strength, good elongation, and excellent creep resistance at elevated temperatures. Their stable austenitic structure ensures they are easy to weld, form, and perform reliably in harsh thermal environments, making them suitable for long-term use under stress and oxidation.
| 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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We assures best quality Stainless Steel 347 Pipes through high level testing and certification. Each pipe is tested with hydrostatic, ultrasonic and chemical composition testing to assure strength and durability according to the market specifications. Being ISO 9001:2015, ASTM A312, and other international standard certified pipes will ensure the desired reliability, anti-corrosive qualities, and great performance.
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.
These pipes are widely utilized in industries that require high-temperature strength and corrosion resistance. You’ll often find them in petrochemical equipment, refinery piping, and chemical processing units where exposure to harsh chemicals and heat is routine. Power plants use them in boiler systems, heat exchangers, and steam pipelines. In the aerospace and thermal processing sectors, these pipes are essential for components that face high heat and mechanical stress. Additionally, 347 pipes are also used in food processing, pharmaceutical systems, and marine applications, where durability, oxidation resistance, and long-term reliability are paramount.
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