Stainless Steel 309S Pipe

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Stainless Steel 309S Pipes Manufacturer, Supplier, and Exporter in Dubai, UAE.

309S Stainless Steel Seamless Pipes Manufacturers and Suppliers in Dubai, UAE, Stainless Steel 309S Seamless Pipes Stockist, Stainless Steel UNS S30909 Seamless Pipes in Dubai, Steel 309S Round Pipes in Dubai, UAE

Table of Contents

Stainless Steel 309S Pipe is a corrosion-resistant, heat-resistant alloy made primarily of iron, chromium, and nickel. The “S” in 309S indicates its suitability for high-temperature applications. This austenitic stainless steel is commonly used in industries like petrochemical, chemical, and heat treatment due to its excellent resistance to oxidation and corrosion at elevated temperatures. It is often utilized in piping systems for conveying corrosive fluids or in environments with high temperatures.

Stainless Steel 309S Pipe Specifications






ASTM A312 / ASME SA312



1/8″NB TO 30″NB IN

Specialized in


Large Diameter Size



SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS



Round, Square, Rectangular, Hydraulic Etc



Seamless / ERW / Welded / Fabricated / LSAW Pipes



Single Random, Double Random & Cut Length.



Plain End, Beveled End, Threaded

Stainless Steel 309S Pipe Chemical Composition

























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Stainless Steel 309S Pipe Mechanical Properties


Tensile Strength (MPa) min

Elongation (% in 50mm) min

Yield Strength 0.2% Proof (MPa) min


Rockwell B (HR B) max

Brinell (HB) max







Top Stainless Steel 309S Pipe Manufacturing Company in Dubai

At PipingMart, we take pride in being the largest supplier and manufacturer in the UAE, offering cutting-edge solutions for all your piping needs. With state-of-the-art production plants strategically located in the UAE, we boast a vast inventory of over 25,000 tons of premium-quality materials readily available in stock.

Contact us to get a quick quote for your requirement.

We offer These Stainless Steel 309S Pipe as per DIN, ISO, JIS or ANSI Standard.

SS 309S Seamless Pipes, SS 309S Rectangular Pipes Exporters in Abu Dhabi, SS 309S Square Pipes in Dubai

Advantages of Stainless Steel 309S Pipe

  • High Temperature Resistance: Stainless steel 309S pipes can withstand high temperatures, making them suitable for applications involving heat-intensive processes.
  • Corrosion Resistance: They exhibit excellent corrosion resistance, ensuring longevity and reliability even in harsh environments or corrosive substances.
  • Oxidation Resistance: With superior oxidation resistance, these pipes maintain their structural integrity and aesthetics over extended periods, minimizing the need for frequent replacements.
  • Weldability: Stainless steel 309S pipes are easily weldable, facilitating seamless fabrication and customization to fit specific project requirements.
  • Formability: They offer excellent formability, allowing for easy shaping and manipulation during manufacturing or installation processes.
  • Durability: These pipes are highly durable, capable of withstanding mechanical stress and environmental factors without compromising performance or integrity.

Types of Stainless Steel 309S Pipe

Stainless Steel 309S Pipe​
Duplex Steel Welded Pipe
SS 309S​​ Seamless Pipe
AISI Duplex Steel Pipe
SS 309S ERW Pipe
SS 304 ERW Pipe
AISI SS 309S Pipe
Duplex Steel Seamless Pipe
SS 309S Welded Pipe
SS Seamless Pipe
UNS S30900 Pipes

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Stainless Steel 309S Pipe Uses

Application Industry

Stainless Steel 309S Pipe applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.

Oil & Gas Industry


Chemical Processing

Power Generation

  • Chemical Processing: Stainless steel 309S pipes are widely employed in chemical processing industries for transporting corrosive chemicals and solutions due to their excellent corrosion resistance.
  • Heat Exchangers: These pipes are utilized in heat exchanger systems for their ability to withstand high temperatures and resist oxidation, ensuring efficient heat transfer without degradation.
  • Furnace Components: In furnace manufacturing, stainless steel 309S pipes serve as essential components due to their high temperature resistance, making them suitable for conveying hot gases and liquids.
  • Power Generation: They find applications in power plants for transporting steam, condensate, and other fluids in both fossil fuel and nuclear power generation processes.
  • Oil and Gas Industry: Stainless steel 309S pipes are used in oil refineries and gas processing plants for conveying crude oil, natural gas, and refined petroleum products, thanks to their corrosion resistance and durability.
  • Aerospace: These pipes are employed in aerospace applications where high temperature and corrosion resistance are essential, such as in aircraft engine components and exhaust systems.

How to Choose the Right Stainless Steel 309S Pipe

  • Operating Conditions: Evaluate the temperature, pressure, and corrosiveness of the operating environment to ensure the selected pipe can withstand these conditions without compromising performance.
  • Size and Dimensions: Determine the required size, outer diameter, wall thickness, and length of the pipe based on the application’s flow rate, space constraints, and installation requirements.
  • Material Grade: Verify that the stainless steel 309S grade meets the specific requirements of your application, considering factors such as temperature resistance, corrosion resistance, and mechanical properties.
  • Surface Finish: Choose the appropriate surface finish (e.g., polished, brushed, or mill finish) based on aesthetic preferences, hygiene requirements, and compatibility with the application environment.
  • Weldability and Fabrication: Consider the weldability and formability of the pipe to ensure ease of fabrication, installation, and customization according to the project’s specifications.
  • Standards and Certifications: Ensure that the stainless steel 309S pipe complies with relevant industry standards (e.g., ASTM, ASME, or EN) and holds necessary certifications (e.g., ISO 9001) to guarantee quality and performance.

Does Stainless Steel 309S Pipe Rust?

Stainless Steel 309S Pipes are highly resistant to rust and corrosion due to their chromium content, which forms a protective oxide layer on the surface. This oxide layer acts as a barrier, preventing corrosion in most environments. However, in certain extreme conditions or prolonged exposure to corrosive agents, there might be a possibility of localized corrosion. Regular maintenance and proper handling can significantly extend the lifespan of 309S pipes without rusting.

Stainless Steel 309S Pipes Supplier in Dubai, SS 309S Seamless Pipe Manufacturer & Exporter in Dubai, UAE

FAQ (Frequently Asked Questions)

How do I maintain Stainless Steel 309S Pipe?

Maintaining stainless steel 309S pipes involves regular cleaning using mild detergent and water to remove surface contaminants. Avoid abrasive cleaners or steel wool, as they can scratch the surface. Routine inspection for signs of corrosion, leaks, or damage is crucial, and prompt repairs should be carried out if any issues are detected. Additionally, ensuring proper support and alignment during installation, as well as protecting against exposure to harsh chemicals or environments, can help prolong the lifespan of the pipes.

Can Stainless Steel 309S Pipe be Welded?

Yes, Stainless Steel 309S pipes can be welded using common welding techniques like TIG, MIG, and SMAW. However, it’s crucial to use appropriate procedures and filler materials for austenitic stainless steels to maintain corrosion resistance and mechanical properties. Preheating and post-weld heat treatment may be necessary to prevent sensitization and maintain weld joint integrity.

How are Stainless Steel 309S Pipe Sized?

Stainless Steel 309S pipes are sized based on their outer diameter (OD) and wall thickness, commonly specified in millimeters or inches. Standard pipe sizes range from small diameters suitable for residential plumbing to larger diameters for industrial applications. The sizing is standardized according to various international standards such as ASTM, ANSI, and DIN. The wall thickness is specified by schedule numbers, with higher numbers indicating thicker walls. Additionally, custom sizes can be fabricated according to specific project requirements.

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