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Girgaon, Mumbai - 400004
Stainless Steel 316 Seamless Tubes Manufacturer in India
What Are Stainless Steel 316 Seamless Tubes?
Stainless Steel 316 Seamless Tubes are molybdenum-bearing austenitic stainless steel tubes manufactured without a longitudinal weld for applications where strong corrosion resistance and reliable mechanical performance are required. Grade 316 is identified by UNS S31600 and is widely used in environments containing chlorides, moisture and aggressive industrial chemicals.
The addition of molybdenum gives Stainless Steel 316 improved resistance to pitting and crevice corrosion compared with conventional 304 stainless steel. Its chromium and nickel content further supports resistance to oxidation and general corrosion, while the austenitic structure provides good toughness, ductility and fabrication characteristics.
Stainless Steel 316 Seamless Tubes can be supplied according to applicable ASTM and ASME specifications. Common requirements include ASTM A213, ASTM A269 and ASME SA213, depending on the intended service and product requirements. Different outside diameters, wall thicknesses, schedules, lengths and finishes can be supplied to suit specific applications.
These tubes are used in chemical processing, marine equipment, petrochemical facilities, pharmaceutical machinery, heat exchangers, food-processing systems, water-treatment plants and industrial process equipment. Their seamless construction and molybdenum-enhanced corrosion resistance make them suitable for demanding fluid and process environments.
Kamal Steels is a Manufacturer and Stockist of Stainless Steel 316 Seamless Tubes, supplying standard and customized tube dimensions for domestic and international projects. Material certificates, inspection documents and testing options can be provided according to customer requirements.
Table of Contents
- Stainless Steel 316 Seamless Tube Specifications
- Stainless Steel 316 Seamless Tube Size Chart
- Stainless Steel 316 Seamless Tube Standards
- Stainless Steel 316 Seamless Tube Features
- Stainless Steel 316 Chemical Composition
- Stainless Steel 316 Mechanical Properties
- Stainless Steel 316 Seamless Tube Applications
- Industries Using Stainless Steel 316 Seamless Tubes
- Frequently Asked Questions
Stainless Steel 316 Seamless Tube Specifications
| Specification | Stainless Steel 316 Seamless Tubes |
|---|---|
| Material | Stainless Steel |
| Grade | 316 |
| UNS | S31600 |
| Tube Type | Seamless |
| ASTM Standard | ASTM A213, ASTM A269, Applicable ASTM Specifications |
| ASME Standard | ASME SA213, ASME SA269, Applicable ASME Specifications |
| Outside Diameter | As per requirement |
| Wall Thickness | As per requirement |
| Schedule | As required |
| Length | Random, Fixed or Customized |
| Finish | Annealed, Pickled, Bright Annealed, Polished or As required |
| Form | Round Tube |
Stainless Steel 316 Seamless Tube Size Chart
Stainless Steel 316 Seamless Tubes are available in multiple diameters and wall thicknesses for process, heat-transfer, fluid-handling and instrumentation requirements.
| Tube Size | Outside Diameter (mm) | Wall Thickness | Length |
|---|---|---|---|
| 1/2" | 12.70 | As required | As required |
| 3/4" | 19.05 | As required | As required |
| 1" | 25.40 | As required | As required |
| 1-1/2" | 38.10 | As required | As required |
| 2" | 50.80 | As required | As required |
| 3" | 76.20 | As required | As required |
| 4" | 101.60 | As required | As required |
| 6" | 152.40 | As required | As required |
| 8" | 203.20 | As required | As required |
Stainless Steel 316 Seamless Tube Standards
| Standard | Application / Product Requirement |
|---|---|
| ASTM A213 | Seamless ferritic and austenitic alloy-steel boiler, superheater and heat-exchanger tubes |
| ASTM A269 | Austenitic stainless steel tubing for general corrosion-resisting service |
| ASME SA213 | Applicable seamless ferritic and austenitic alloy-steel tubing requirements |
| ASME SA269 | Applicable austenitic stainless steel tubing requirements for general service |
Stainless Steel 316 Seamless Tube Features
- Excellent resistance to general corrosion
- Enhanced resistance to pitting and crevice corrosion
- Molybdenum-bearing austenitic stainless steel
- Good performance in chloride-containing environments
- High toughness and ductility
- Good weldability and fabrication characteristics
- Suitable for chemical and marine environments
- Good resistance to oxidation
- Seamless construction for demanding applications
- Available in various sizes and finishes
Stainless Steel 316 Chemical Composition
| Element | Composition (%) |
|---|---|
| Chromium | 16.0 - 18.0 |
| Nickel | 10.0 - 14.0 |
| Molybdenum | 2.0 - 3.0 |
| Carbon | 0.08 max. |
| Manganese | 2.00 max. |
| Silicon | 0.75 max. |
| Phosphorus | 0.045 max. |
| Sulfur | 0.030 max. |
| Nitrogen | 0.10 max. |
| Iron | Balance |
Stainless Steel 316 Mechanical Properties
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 515 MPa min. |
| Yield Strength | 205 MPa min. |
| Elongation | 40% min. |
| Density | Approx. 8.0 g/cm³ |
Note: Mechanical requirements should be confirmed against the applicable ASTM or ASME product specification and material test certificate.
Stainless Steel 316 Seamless Tube Applications
Chemical Processing
Used for process equipment and tubing exposed to corrosive chemicals and fluids.
Marine Equipment
Suitable for components operating in seawater and chloride-rich environments.
Heat Exchangers
Applied in heat-transfer systems requiring corrosion-resistant tubing.
Petrochemical Plants
Used in selected process and fluid-handling systems within petrochemical facilities.
Pharmaceutical Equipment
Selected for process equipment where corrosion resistance and cleanability are important.
Water Treatment
Used in corrosion-resistant fluid-handling and treatment equipment.
Industries Using Stainless Steel 316 Seamless Tubes
Chemical Industry
Used in corrosion-resistant process and fluid-handling applications.
Marine Industry
Applied in equipment exposed to seawater and chloride-bearing conditions.
Petrochemical Industry
Used in selected process systems and equipment exposed to corrosive media.
Pharmaceutical Industry
Selected for hygienic process equipment requiring corrosion-resistant tubing.
Food Processing Industry
Used in suitable sanitary fluid-transfer and processing applications.
Engineering Industry
Applied in industrial machinery and equipment requiring corrosion-resistant stainless steel tubing.
Frequently Asked Questions
Stainless Steel 316 Seamless Tubes are molybdenum-bearing stainless steel tubes manufactured from Stainless Steel 316 (UNS S31600 / WNR 1.4401). They offer outstanding corrosion resistance, excellent mechanical strength, and reliable performance in aggressive environments.
Our Stainless Steel 316 Seamless Tubes are manufactured according to ASTM A213, ASTM A269, ASME SA213, and ASME SA269 international standards.
SS 316 Seamless Tubes provide excellent resistance to pitting, crevice corrosion, chloride attack, high mechanical strength, superior weldability, and long service life.
They are widely used in marine industries, chemical processing plants, pharmaceutical manufacturing, food processing, oil & gas facilities, water treatment plants, heat exchangers, and power generation industries.
SS 316 Seamless Tubes are available in various outside diameters, wall thicknesses, schedules, surface finishes, and custom cut lengths to meet diverse industrial requirements.
Each tube undergoes Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Flattening Test, Flaring Test, Intergranular Corrosion (IGC) Testing, and Dimensional Inspection.
The addition of molybdenum in Stainless Steel 316 provides significantly better resistance to pitting, crevice corrosion, and chloride-containing environments compared to Stainless Steel 304.
Yes. Every shipment includes EN 10204 3.1 Mill Test Certificates, inspection reports, complete material traceability, and third-party inspection certificates upon request.
Yes. Kamal Steels exports Stainless Steel 316 Seamless Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Stainless Steel 316 Seamless Tubes with ready stock, certified quality, competitive pricing, stringent quality control, export-standard packaging, complete documentation, and dependable worldwide delivery for critical industrial applications.