Stainless Steel 347H Pipes are crafted from a high-carbon, stabilized austenitic stainless steel grade that’s built to withstand high temperatures while resisting corrosion. Thanks to the addition of niobium, these pipes maintain their stability against carbide precipitation, which means they can handle prolonged exposure to heat without a hitch. With their impressive creep resistance, durability, and oxidation resistance, Stainless Steel 347H Pipes are perfect for tough thermal and industrial applications. Their sturdy design, ease of welding, and dependable performance in harsh environments guarantee a long service life, especially in areas where thermal and mechanical stresses are a big deal.
| International Specification | ASTM A312/ ASME SA 312 TP 347H |
| Seamless Pipes Size |
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| Welded Pipe Size |
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| EFW Pipe Size |
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| Wall Thickness | Schedule 5, Schedule 40, Schedule10, Schedule 80, Schedule 160, Schedule 80S, Schedule XXS, Schedule XS |
| techniques | EFW/ Seamless / ERW / Welded / LSAW/ Fabricated / Seam-Welded / CDW/ Redrawn |
| Form | Round, Square, Rectangular |
| Length | Double Random & Required Length End, Single Random, Plain End, Treaded, Beveled End |
| Condition | Hot Finished, Annealed and Pickled, Bright Annealed, Polished, Cold Drawn |
| Stainless Steel | Nickel | Magnesium | Silicon | sulfur | Carbon | Chromium | Phosphorus | Molybdenum | Nitrogen | |
| 347H | Minimum | 9 | 00.04 | 17 | 3 | |||||
| Maximum | 13 | 2 | 1 | 00.030 | 00.10 | 19 | 00.045 | 4 | ||
| SS Grade | Tensile Strength | Yield Strength | Elongation | Hardness | |
| Rockwell B | Brinell | ||||
| SS 347H | 515 | 205 | 40 | 92 | 201 |
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Typically, Stainless Steel 347H Pipes consist of 17–19% chromium, 9–13% nickel, a higher carbon content, and niobium for stabilization. This unique blend boosts their creep strength, provides excellent oxidation resistance, and protects against intergranular corrosion at high temperatures. On the mechanical side, 347H pipes showcase high tensile and yield strength, good elongation, and outstanding resistance to thermal stress. Their stable austenitic structure allows for great formability, weldability, and performance in settings with high heat, pressure, and corrosive substances.
Stainless Steel 347H Square Pipes provide excellent corrosion resistance and are ideal for structural applications. They typically come in sizes ranging from 1 inch to 6 inches, offering a high-strength option for various industrial and architectural needs.
SS 347H Seamless Pipes are known for their superior corrosion resistance and are suitable for high-temperature applications. They are available in sizes from 1/2 inch to 12 inches in diameter, ensuring durability under stress and high pressure.
Stainless Steel 347H ERW Pipes offer good corrosion resistance and are produced using electric resistance welding. They come in 1 inch to 24 inches, making them suitable for fluid transportation and structural support.
SS 347H LSAW Pipes feature excellent corrosion resistance and are used for high-pressure applications. Available in sizes ranging from 6 to 60 inches in diameter, they are ideal for large-scale industrial projects.
Stainless Steel 347H Round Pipes provide robust corrosion resistance and are versatile for various applications. Commonly available in sizes from 1/2 inch to 12 inches in diameter, they are suitable for both commercial and industrial uses.
Stainless Steel 347H Welded Pipes offer strong corrosion resistance and are manufactured by welding flat plates into cylindrical shapes. They are available in sizes from 1 inch to 24 inches and are suitable for a wide range of applications, including piping systems and structural components.
Niazi Stainless is a leading supplier, and stockist of high-quality Stainless Steel 347H Pipes in Manama, Bahrain. Our products are widely used in various applications, and we are committed to delivering excellent service, resulting in high customer satisfaction. Our unique finishing techniques further distinguish us in the stainless steel industry. We are dedicated to consistently providing superior products and effectively meeting our customer’s needs.
These pipes are widely utilized in industries that demand reliable performance in high-temperature and corrosive conditions. You’ll often find them in petrochemical plants, refinery units, and chemical processing systems, serving as heat exchangers, superheaters, and re-heater tubes. Power generation facilities use them in boilers, steam pipelines, and high-temperature machinery. In aerospace and thermal equipment manufacturing, they shine under extreme heat. Plus, 347H pipes are also found in food processing, pharmaceutical systems, and marine applications where durability, oxidation resistance, and long-term structural reliability are crucial.
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