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The company produces both seamless and welded Stainless Steel 309 pipes and tubes in various diameters, wall thicknesses, and surface finishes to meet specific project requirements. All products adhere to international standards such as ASTM, ASME, and DIN, ensuring high quality, durability, and reliability for demanding applications.
Stainless Steel 309 Pipe & Tubes are widely used in industries such as petrochemical, power generation, marine engineering, construction, and chemical processing. Its high chromium and nickel content provides excellent strength and performance even in high-temperature or mildly corrosive environments.
Stainless Steel 309 pipe fittings are high-temperature austenitic stainless steel materials designed to provide excellent oxidation resistance and mechanical strength at elevated temperatures. Widely used in industrial heating systems, furnaces, and heat exchangers, 309 fittings are ideal for piping systems exposed to thermal cycling and harsh operating conditions.
SS 309 contains approximately 23% chromium and 13% nickel, with small amounts of carbon, manganese, and silicon. This high chromium and nickel content provides enhanced resistance to oxidation and scaling, particularly in high-temperature environments.
Sumer Metal Industries exports these pipes and tubes globally to countries including the UAE, Saudi Arabia, Kuwait, Qatar, Bahrain, Oman, USA, Mexico, Canada, Egypt, Algeria, Nigeria, South Africa, Kenya, Tanzania, Spain, Germany, France, Italy, UK, Netherlands, Belgium, Turkey, Jordan, Yemen, Malaysia, Singapore, Bangladesh, Sri Lanka, Australia, Iran, Russia, Poland, Portugal, and Colombia, ensuring worldwide availability.
With a strong focus on quality, technical support, and timely delivery, Sumer Metal Industries provides reliable Stainless Steel 309 Pipe & Tubes for challenging industrial applications. Customers can rely on their products for long-lasting performance, reduced maintenance, and consistent service worldwide.
309 pipe fittings exhibit tensile strength ranging from 515–690 MPa and yield strength between 205–310 MPa. Elongation typically ranges from 35–45%, providing excellent toughness and ductility. These properties ensure reliable performance in high-temperature piping systems and industrial applications.
The primary advantage of SS 309 fittings is their ability to withstand high temperatures up to 1050°C (1922°F) without significant scaling or loss of mechanical properties. This makes them suitable for use in furnaces, boilers, heat exchangers, and exhaust systems where conventional stainless steels would fail.
Specification Table
| Specification | Details |
|---|---|
| Grade | 309 / 309S |
| Type | Austenitic Stainless Steel |
| Form | Seamless & Welded Pipe & Tubes |
| Standards | ASTM A312, ASTM A213, ASME SA312, ASME SA213, DIN 1.4845 |
| End Connection | Beveled Ends, Plain Ends, Threaded Ends |
| Sizes | OD: 6 mm to 660 mm | Wall Thickness: 0.5 mm to 40 mm |
| Length | Up to 12 meters or as per client requirement |
| Surface Finish | Pickled, Polished, or as per requirement |
| Applications | Furnace parts, Heat exchangers, Chemical equipment, Petrochemical piping |
| Certification | ISO 9001, EN 10204 3.1/3.2, Material Test Certificate (MTC) |
Chemical Composition (Typical ranges for SS309)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.0 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.03 max |
| Silicon (Si) | 1.0 max |
| Chromium (Cr) | 22.0 – 24.0 |
| Nickel (Ni) | 12.0 – 15.0 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value (Typical) |
|---|---|
| Tensile Strength (MPa) | 515 – 735 |
| Yield Strength (0.2% Offset, MPa) | 205 – 310 |
| Elongation (%) | 40 min |
| Hardness (HRB) | 79 max |
| Modulus of Elasticity (GPa) | 193 |
| Density (g/cm³) | 7.9 |
| Melting Point (°C) | 1390 – 1420 |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ASTM / ASME | 309 / 309S |
| EN / DIN | 1.4828 / X8CrNi25-21 |
| JIS | SUS 309S |
| GB / Chinese Standard | 06Cr23Ni13 |
| ISO | 309S |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Nominal Pipe Size (NPS) | Outside Diameter (mm) | Wall Thickness (mm) | Weight per Meter (kg/m) |
|---|---|---|---|
| 1/2" | 21.3 | 2.77 | 1.68 |
| 3/4" | 26.7 | 2.87 | 2.29 |
| 1" | 33.4 | 3.38 | 3.17 |
| 1 1/2" | 48.3 | 3.91 | 4.83 |
| 2" | 60.3 | 4.55 | 6.83 |
| 3" | 88.9 | 5.49 | 12.32 |
| 4" | 114.3 | 6.02 | 17.84 |
| 6" | 168.3 | 7.11 | 31.83 |
| 8" | 219.1 | 8.18 | 50.63 |
| 10" | 273.0 | 9.27 | 74.44 |
Types Of Stainless Steel 309 Pipe & Tubes
SS 310 Seamless Pipe
SS 310 Welded Pipe
SS 310 ERW Pipe
SS 310S EFW Pipe
Stainless Steel 310S Seamless Tube
310H Stainless Steel Welded Tube
310 Stainless Steel Capillary Tube
310H Stainless Steel Heat Exchanger Tubes
Frequently Asked Questions (FAQ)
What is Stainless Steel 309?
Stainless Steel 309 is an austenitic stainless steel with high chromium and nickel content, designed for high-temperature and corrosion-resistant applications.
What are the common applications of SS 309 Pipe & Tubes?
It is used in furnace parts, heat exchangers, chemical plants, petrochemical piping, and other high-temperature industrial applications.
What forms are available?
SS 309 is available as seamless and welded pipes and tubes in various sizes, wall thicknesses, and surface finishes.
What standards does Stainless Steel 309 comply with?
It meets ASTM A312, ASTM A213, ASME SA312, ASME SA213, DIN 1.4845, and other international standards.
Can SS 309 be used in corrosive environments?
Yes, SS 309 offers good resistance to oxidation and corrosion in mildly corrosive or high-temperature environments.
What countries does Sumer Metal Industries supply SS 309 Pipe & Tubes to?
They supply globally, including UAE, Saudi Arabia, Kuwait, Qatar, Bahrain, Oman, USA, Mexico, Canada, Egypt, Algeria, Nigeria, South Africa, Kenya, Tanzania, Spain, Germany, France, Italy, UK, Netherlands, Belgium, Turkey, Jordan, Yemen, Malaysia, Singapore, Bangladesh, Sri Lanka, Australia, Iran, Russia, Poland, Portugal, and Colombia.
Pipes & Tubes Supplier
Mumbai, Delhi, Kolkata, Chennai, Bengaluru, Hyderabad, Ahmadabad, Pune, Surat, Jaipur, Kanpur, Lucknow, Nagpur, Ghaziabad, Indore, Coimbatore, Kochi, Patna, Kozhikode, Thrissur, Vadodara, Agra, Malappuram, Thiruvananthapuram, Kannur, Ludhiana, Nashik, Noida, Madrid, Sharjah, Moscow, Hong Kong, Lagos, Montreal, Bogota, Los Angeles, New Delhi, Jeddah, Chennai, Kanpur, Edmonton, Istanbul, Bhopal, Calgary, Ulsan, Rio de Janeiro, Colombo, Cairo, Ludhiana, Indore, Thane, Dubai, Seoul, Santiago, Kuwait City, Dammam, Tehran, Busan, Rajkot, Nagpur, La Victoria, Bangkok, Granada, Lahore, Manama
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