Stainless Steel 321H Pipes are made from titanium-stabilized austenitic steel, containing about 17-19% Chromium, 9-12% Nickel, and Titanium (≥5xC) to prevent carbide precipitation. Engineered for high-temperature strength, SS 321H features a higher carbon content than 321, enhancing its creep resistance. Its mechanical properties include a minimum tensile strength of 515 MPa, yield strength of 205 MPa, and an elongation of 40% in 50mm. With a density of 7.90 g/cm³, it can handle continuous service temperatures up to 900°C, making SS 321H Pipes perfect for heat-intensive and oxidative environments.
| ASTM Specification | ASME SA 312 /ASTM A312/ TP 321H |
| EFW Pipes Sizes |
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| Wall THK | Schedule 40, Schedule 5, Schedule10, Schedule 160, Schedule 80, Schedule XXS, Schedule 80S, Schedule XS |
| Seamless Pipes Sizes |
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| Welded Pipes Sizes |
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| Forms | ERW / Round, Rectangular |
| techniques | EFW/ Welded /ERW / Seamless / Fabricated / LSAW/ CDW/ Seam-Welded / Redrawn |
| Element | SS 321H |
| Nickel | 09 To 12 |
| sulfur | 00.03 Maximum |
| Nitrogen | 00.10 |
| Chromium | 17 To 19 |
| Silicon | 00.75 Maximum |
| Magnesium | 2 Maximum |
| Carbon | 00.04 To 0.08 |
| Phosphorus | 00.045 Maximum |
| Titanium | 00.70 Maximum |
| Element | SS 321H |
| Tensile Strength | 515 |
| Yield Strength | 205 |
| Elongation | 40 |
| Rockwell | 95 |
| Brinell | 217 |
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At Aditya Stainless, we are proud to be the largest supplier, manufacturer, and exporter of Stainless Steel 321H Pipes in Kolkata India. Our cutting-edge solutions cater to all your piping needs. With state-of-the-art production facilities strategically located in the India, we maintain a vast inventory of over 16,000 tons of premium-quality materials, ensuring we have the stock readily available to meet your demands.
Stainless Steel 321H Square Pipes offer excellent resistance to intergranular corrosion, especially in high-temperature applications. They typically come in sizes ranging from 20 mm to 200 mm on each side, providing robust structural support and versatility for various industries.
Known for its resistance to oxidation and corrosion, SS 321H Seamless Pipes are manufactured without welds or joints, offering uniformity and strength. They are available in 6 mm to 300 mm diameter and are suitable for high-pressure and high-temperature environments.
Featuring good resistance to corrosion and elevated temperatures, Stainless Steel 321H ERW (Electric Resistance Welded) Pipes are produced using electric resistance welding techniques. They are available from 15 mm to 150 mm, ideal for pipelines and structural applications.
SS 321H LSAW (Longitudinal Submerged Arc Welded) Pipes resist high-temperature oxidation and corrosion. These pipes are 60 mm to 1000 mm in diameter and are commonly used in oil and gas transmission and large-diameter piping systems.
Stainless Steel 321H Round Pipes are versatile and widely used with strong resistance to scaling and corrosion. They are available in diameters ranging from 10 mm to 500 mm, making them suitable for various industrial applications, including chemical processing.
Offering excellent resistance to intergranular corrosion, Stainless Steel 321H Welded Pipes are produced by welding and are ideal for applications where joints and fittings are required. They typically come in sizes ranging from 15 mm to 600 mm in diameter, suitable for various structural and mechanical uses.
Aditya Stainless is a leading supplier, and stockist of high-quality Stainless Steel 321H Pipes in Kolkata India. 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.
Stainless Steel 321H Pipes find extensive use in high-temperature industrial settings like oil and gas refineries, petrochemical plants, power generation, and heat exchangers. In Kolkata, they are favored for their remarkable resistance to oxidation and scaling at temperatures reaching 900°C. SS 321H Pipes are ideal for applications such as exhaust manifolds, furnace components, boiler parts, and pressure vessels where thermal stability is essential. Their excellent creep and stress rupture resistance make them an ideal choice for piping systems subjected to high pressure and temperature variations, ensuring reliability in challenging environments.
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