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Stainless Steel 309 Pipes

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SS 309 Pipes – 309 Stainless Steel Pipes Manufacturer & Exporter in Mumbai, India

Detailed Information

We are a leading manufacturer, stockist, and SS 309/309S Pipes Supplier Exporter in Mumbai India, delivering premium-quality high-temperature stainless steel piping solutions for critical industrial applications. Our SS 309 Pipes are engineered for environments where oxidation resistance, elevated temperature strength, and long service life are essential.

With extensive hands-on experience supplying high-performance materials to refineries, power plants, and process industries, we understand what engineers and procurement teams expect—traceability, compliance, durability, and consistent quality. Our range includes 309 Stainless Steel Pipes, 309 SS Electropolished Pipe, UNS S30900 Hollow Pipe, UNS S30909 Pipes, and we are also a trusted DIN 1.4828 Round Pipe Stockist in Mumbai.

What Are SS 309 Pipes?

SS 309 Pipes are chromium-nickel austenitic stainless steel pipes developed specifically for high-temperature service. Compared to conventional 304 grades, 309 contains higher chromium (Cr) and nickel (Ni) content, providing:

  • Superior oxidation resistance
  • Better scaling resistance
  • Enhanced strength at elevated temperatures
  • Improved corrosion resistance in moderate environments

We supply both standard 309 grade (UNS S30900 Hollow Pipe) and the low carbon variant 309S (UNS S30909 Pipes) to meet fabrication and welding requirements.

Cities We Delivered

New York City, Los Angeles, Chicago, Houston, Phoenix, Philadelphia, San Antonio, San Diego, Dallas, San Jose, Austin, Jacksonville, Fort Worth, Columbus, Charlotte, San Francisco, Indianapolis, Seattle, Denver, Washington, Boston, El Paso, Nashville, Detroit, Oklahoma City, Portland, Las Vegas, Memphis, Louisville, Baltimore, Milwaukee, Albuquerque, Tucson, Fresno, Mesa, Sacramento, Atlanta, Kansas City, Colorado Springs, Omaha, Raleigh, Miami, Long Beach, Virginia Beach, Oakland, Minneapolis, Tulsa, Tampa, Arlington, New Orleans, Wichita, Bakersfield, Cleveland, Aurora, Anaheim, Honolulu, Santa Ana, Riverside, Corpus Christi, Lexington, Henderson, Stockton, Saint Paul, Cincinnati, St. Louis, Pittsburgh, Greensboro, Lincoln, Anchorage, Plano, Orlando, Irvine, Newark, Durham, Chula Vista, Toledo, Fort Wayne, St. Petersburg, Laredo, Jersey City, Chandler, Madison, Lubbock, Scottsdale, Reno, Buffalo, Gilbert, Glendale, North Las Vegas, Winston-Salem, Chesapeake, Norfolk, Fremont, Garland, Irving, Hialeah, Richmond, Boise, Spokane, Baton Rouge, Tacoma, San Bernardino, Modesto, Fontana, Des Moines, Moreno Valley, Santa Clarita, Fayetteville, Birmingham, Oxnard, Rochester, Port St. Lucie, Grand Rapids, Huntsville, Salt Lake City, Frisco, Yonkers, Amarillo, Glendale, Huntington Beach, McKinney, Montgomery, Augusta, Aurora, Akron, Little Rock, Tempe, Columbus, Overland Park, Grand Prairie, Tallahassee, Cape Coral, Mobile, Knoxville, Shreveport, Worcester, Ontario, Vancouver, Sioux Falls, Chattanooga, Brownsville, Fort Lauderdale, Providence, Newport News, Rancho Cucamonga, Santa Rosa, Peoria, Oceanside, Elk Grove, Salem, Pembroke Pines, Eugene, Garden Grove, Cary, Fort Collins, Corona, Springfield, Jackson, Alexandria, Hayward, Clarksville, Lakewood, Lancaster, Salinas, Palmdale, Hollywood, Springfield, Macon, Kansas City, Sunnyvale, Pomona, Killeen, Escondido, Pasadena, Naperville, Bellevue, Joliet, Murfreesboro, Midland, Rockford, Paterson, Savannah, Bridgeport, Torrance, McAllen, Syracuse, Surprise, Denton, Roseville, Thornton, Miramar, Pasadena, Mesquite, Olathe, Dayton, Carrollton, Waco, Orange, Fullerton, Charleston, West Valley City, Visalia, Hampton, Gainesville, Warren, Coral Springs, Cedar Rapids, Round Rock, Sterling Heights, Kent, Columbia, Santa Clara, New Haven, Stamford, Concord, Elizabeth, Athens, Thousand Oaks, Lafayette, Simi Valley, Topeka, Norman, Fargo, Wilmington, Abilene, Odessa, Columbia, Pearland, Victorville, Hartford, Vallejo, Allentown, Berkeley, Richardson, Arvada, Ann Arbor, Rochester, Cambridge, Sugar Land, Lansing, Evansville, College Station, Fairfield, Clearwater, Beaumont, Independence, Provo, West Jordan, Murrieta, Palm Bay, El Monte, Carlsbad, North Charleston, Temecula, Clovis, Springfield, Meridian, Westminster, Costa Mesa, High Point, Manchester, Pueblo, Lakeland, Pompano Beach, West Palm Beach, Antioch, Everett, Downey, Lowell, Centennial, Elgin, Richmond, Peoria, Broken Arrow, Miami Gardens, Billings, Jurupa Valley, Sandy Springs, Gresham, Lewisville, Hillsboro, Ventura, Greeley, Inglewood, Waterbury, League City, Santa Maria, Tyler, Davie, Lakewood, Daly City, Boulder, Allen, West Covina, Sparks, Wichita Falls, Green Bay, San Mateo, Norwalk, Rialto, Las Cruces, Chico, El Cajon, Burbank, South Bend, Renton, Vista, Davenport, Edinburg, Tuscaloosa, Carmel, Spokane Valley, San Angelo, Vacaville, Clinton, Bend, Woodbridge.

Our Products

Our Latest Blogs

Sizes & Specifications Available – 309 Stainless Steel Pipes

We maintain ready inventory as a trusted DIN 1.4828 Round Pipe Stockist and exporter.

Outer Diameter: 6 mm to 600 mm
Wall Thickness: 0.5 mm to 50 mm
Schedules: SCH 5 to SCH XXS
Length: Random, double random, or cut length
Forms: Round, square, rectangular

Our stock includes UNS S30900 Hollow Pipe, UNS S30909 Pipes, and custom-finished 309 SS Electropolished Pipe.

Chemical Composition of SS 309 / 309S Pipes

Understanding the material composition is essential for engineers specifying piping for high-temperature service. Below is the standard chemical composition of 309 Stainless Steel Pipes:

Element

UNS S30900 (309)

UNS S30909 (309S)

Carbon (C)

Max 0.20

Max 0.08

Chromium (Cr)

22.0 – 24.0

22.0 – 24.0

Nickel (Ni)

12.0 – 15.0

12.0 – 15.0

Manganese (Mn)

Max 2.00

Max 2.00

Silicon (Si)

Max 1.00

Max 1.00

Phosphorus (P)

Max 0.045

Max 0.045

Sulfur (S)

Max 0.030

Max 0.030

Iron (Fe)

Balance

Balance

The reduced carbon in UNS S30909 Pipes minimizes the risk of intergranular corrosion after welding, making it preferred for fabrication-intensive projects.

Mechanical Properties of 309 Stainless Steel Pipes

When selecting SS 309 Pipes, mechanical performance under load and high temperature is critical.

Property

UNS S30900 (309)

UNS S30909 (309S)

Tensile Strength

≥ 515 MPa

≥ 515 MPa

Yield Strength (0.2% Offset)

≥ 205 MPa

≥ 205 MPa

Elongation

≥ 40%

≥ 40%

Hardness (Brinell)

≤ 217 HB

≤ 217 HB

Modulus of Elasticity

193 GPa

193 GPa

These mechanical properties make 309 Stainless Steel Pipes highly suitable for:

  • Furnace components
  • Heat exchangers
  • Boilers and superheaters
  • High-temperature ducting

Difference Between UNS S30900 and UNS S30909 Pipes

Feature

UNS S30900

UNS S30909

Carbon Content

Higher

Lower

Weldability

Good

Excellent

Resistance to Sensitization

Moderate

Improved

Preferred For

General high-temp use

Fabricated & welded structures

For welded assemblies exposed to high temperatures, UNS S30909 Pipes are often recommended.

    Performance Advantages of SS 309 Pipes

    Our SS 309 Pipes are selected for projects where reliability at elevated temperatures is mandatory.

    • Excellent oxidation resistance up to 1090°C
    • High creep resistance
    • Strong scaling resistance in continuous service
    • Good weldability and fabrication properties
    • Long operational life in thermal environments
    • Reliable performance in cyclic heating conditions

    Because of these properties, UNS S30900 Hollow Pipe and UNS S30909 Pipes are extensively used in demanding industrial installations.

    Industrial Applications of 309 Stainless Steel Pipes

    With real-world supply experience across multiple sectors, we have delivered SS 309/309S Pipes Supplier Exporter in Mumbai India to industries such as:

    • Oil & Gas
    • Petrochemical Plants
    • Refineries
    • Thermal Power Plants
    • Cement Plants
    • Chemical Processing Units
    • Heat Treatment Furnaces
    • Boiler Manufacturing

    Our engineering team works closely with procurement and project teams to ensure correct grade selection based on operating temperature and corrosion conditions.

    Product Range – 309 Stainless Steel Pipes We Supply

    We manufacture and stock a complete range of 309 Stainless Steel Pipes in multiple forms:

    • 309 Seamless Pipes

    Manufactured through hot extrusion and cold drawing processes for high-pressure and high-temperature applications.

    • 309 Welded Pipes

    Cost-effective and dimensionally accurate pipes suitable for structural and industrial use.

    • 309 SS Electropolished Pipe

    Our 309 SS Electropolished Pipe undergoes electrochemical polishing to achieve:

    • Smooth, contamination-free surface

    • Improved corrosion resistance

    • Reduced surface roughness

    • Enhanced cleanability

    Ideal for pharmaceutical, chemical, and food processing applications.

    • UNS S30900 Hollow Pipe

    Widely used in structural and mechanical systems requiring durability and heat resistance.

    • UNS S30909 Pipes (309S)

    Low carbon version offering better weldability and reduced carbide precipitation.

    • DIN 1.4828 Round Pipe

    As a reputed DIN 1.4828 Round Pipe Stockist, we maintain ready stock in multiple sizes and schedules for domestic and export supply.

    Why We Are a Trusted SS 309/309S Pipes Supplier Exporter in Mumbai India?

    Our reputation is built on technical knowledge, consistent quality, and transparent business practices.

    • Large Ready Stock: We maintain inventory of 309 Stainless Steel Pipes for immediate dispatch.
    • Technical Expertise: Our team assists in grade selection, temperature evaluation, and compliance requirements.
    • Strict Quality Compliance: All products meet ASTM, ASME, and DIN standards.
    • Global Export Network: We export SS 309 Pipes to the Middle East, Europe, Southeast Asia, and Africa.
    • Customized Solutions: Special sizes, surface finishes, and documentation support are available as per project requirements.

    Contact Us for SS 309 Pipes

    If you are sourcing SS 309 Pipes, 309 Stainless Steel Pipes, UNS S30900 Hollow Pipe, UNS S30909 Pipes, or require a reliable DIN 1.4828 Round Pipe Stockist, we are ready to support your requirement with technical clarity and competitive pricing.

    As an experienced SS 309/309S Pipes Supplier Exporter in Mumbai India, we focus on delivering material that performs reliably in real industrial conditions—backed by certification, inspection, and responsive service.

    Contact us today for stock availability, technical consultation, and the latest price quotation.

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