Based in Chennai, India, Vinit Stainless is a reputable producer and supplier of high-end stainless steel goods, such as Stainless Steel 309S Pipes. These pipes have exceptional oxidation resistance and mechanical strength, and they are specifically made to be used in high-temperature, mildly corrosive environments. The low carbon content of SS 309S pipes makes them perfect for high-heat applications and welding without the possibility of carbide precipitation. Vinit Stainless provides precisely engineered pipes that satisfy international standards and are used in vital industries such as refineries, chemical plants, and thermal processing. We promise that every product we supply will be of the highest calibre, dependable, and effective.
To enhance weldability and reduce carbide precipitation, stainless steel 309S pipes have a low carbon content (≤ 0.08%) and are primarily composed of nickel (12–15%) and chromium (22%–24%). These pipes have an approximate elongation of 40%, a yield strength of 205 MPa, and a tensile strength of 515 MPa. Excellent toughness, resistance to corrosion, and thermal stability are guaranteed by the austenitic structure. SS 309S is perfect for welded applications exposed to high temperatures and mildly aggressive environments because it is specifically made for high-temperature service, combining strength and resistance to oxidation.
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Dimensions |
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ASTM, ASME and API |
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Standard |
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ASTM A312 / ASME SA312 |
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Size |
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1/8″NB TO 30″NB IN |
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Specialized in |
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Large Diameter Size |
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Schedule |
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SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
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Form |
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Round, Square, Rectangular, Hydraulic Etc |
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Type |
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Seamless / ERW / Welded / Fabricated / LSAW Pipes |
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Length |
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Single Random, Double Random & Cut Length. |
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End |
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Plain End, Beveled End, Threaded |
| Grade | 309S | |
|---|---|---|
| min | max | |
| C | – | 0.08 |
| Mn | – | 2.0 |
| Si | – | 0.75 |
| P | – | 0.045 |
| S | – | 0.03 |
| Cr | 16.0 | 18.0 |
| Mo | 2.0 | 3.0 |
| Ni | 10.0 | 14.0 |
| N | – | 0.10 |
| Grade | 309S | |
|---|---|---|
| Tensile Strength (MPa) min | 515 | |
| Yield Strength 0.2% Proof (MPa) min | 205 | |
| Elongation (% in 50mm) min | 40 | |
| Hardness | Rockwell B (HR B) max | 95 |
| Rockwell B (HR B) max | 217 | |
Contact us to get a quick quote for your requirement.
Stainless 309S square pipes are high-temperature resistant, corrosion-resistant tubes with a square cross-section. They are used in structural and industrial applications requiring durability and strength under extreme conditions.
SS 309S seamless pipes are high-temperature resistant, corrosion-resistant tubes with no weld seams. Ideal for demanding environments, they offer durability and strength in applications like aerospace, power generation, and chemical processing.
Stainless Steel 309S ERW (Electric Resistance Welded) pipes are high-temperature resistant tubes created by welding. They offer durability and corrosion resistance, suitable for structural and industrial applications under extreme conditions.
SS 309S LSAW (Longitudinal Submerged Arc Welded) pipes are high-strength tubes with excellent high-temperature and corrosion resistance, used in large-diameter applications like pipelines and heavy-duty structural projects.
Stainless Steel 309S round pipes are high-temperature resistant, corrosion-resistant tubes with a circular cross-section. They are used in various applications, including industrial, structural, and high-heat environments, offering durability and strength.
Stainless Steel 309S welded pipes are high-temperature resistant tubes created by welding stainless steel strips. They offer excellent corrosion resistance and durability, suitable for applications requiring strength and performance under extreme conditions.
Many high-temperature, mildly corrosive settings, including furnaces, kilns, heat treatment apparatus, and exhaust systems, use stainless steel 309S pipes. They are especially well-suited for welded structures in the chemical, petrochemical, and refinery industries due to their low carbon content. Power plants, thermal processing systems, and parts subjected to cyclic heating and cooling also use these pipes. For heat exchangers, recuperators, and high-efficiency combustion systems, SS 309S pipes are dependable due to their exceptional resistance to oxidation and scaling at temperatures as high as 1000°C. Long-lasting performance in crucial industrial applications is guaranteed by their weldability and durability.
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