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Girgaon, Mumbai - 400004
Stainless Steel 317L Seamless Tubes Manufacturer in India
What Are Stainless Steel 317L Seamless Tubes?
Stainless Steel 317L Seamless Tubes are low-carbon molybdenum-bearing austenitic stainless steel tubes manufactured without a welded seam for applications exposed to corrosive chemicals and demanding industrial environments. Grade 317L is identified by UNS S31703 and contains higher levels of chromium, nickel and molybdenum than conventional 304 stainless steel, giving it enhanced resistance to aggressive corrosion.
The increased molybdenum content of Stainless Steel 317L improves its resistance to pitting and crevice corrosion, particularly in chloride-containing environments. Its low carbon content helps minimize chromium carbide precipitation during welding and thermal exposure, while the austenitic structure provides good toughness and fabrication characteristics. These properties make 317L suitable for process equipment where stronger corrosion resistance is required.
Stainless Steel 317L Seamless Tubes can be manufactured and supplied to applicable ASTM and ASME specifications, with ASTM A213 and ASTM A269 being common specifications depending on the intended service and tube requirements. The tubes can be supplied in different outside diameters, wall thicknesses, schedules, surface finishes and lengths according to project specifications.
These seamless tubes are used in chemical processing equipment, petrochemical plants, pollution-control systems, pulp and paper machinery, pharmaceutical equipment, textile processing, food-processing systems and marine applications. Their enhanced molybdenum content and low-carbon chemistry make them suitable for environments where resistance to aggressive chemicals and localized corrosion is important.
Kamal Steels is a Manufacturer and Stockist of Stainless Steel 317L Seamless Tubes, offering tubing solutions in standard and customized dimensions. We supply products for domestic and international requirements with MTC, inspection documentation, testing reports and export-standard packaging as required by the project.
Table of Contents
- Stainless Steel 317L Seamless Tube Specifications
- Stainless Steel 317L Seamless Tube Size Chart
- Stainless Steel 317L Seamless Tube Standards
- Stainless Steel 317L Seamless Tube Features
- Stainless Steel 317L Chemical Composition
- Stainless Steel 317L Mechanical Properties
- Stainless Steel 317L Seamless Tube Applications
- Industries Using Stainless Steel 317L Seamless Tubes
- Frequently Asked Questions
Stainless Steel 317L Seamless Tube Specifications
Stainless Steel 317L Seamless Tubes are available in different dimensions and finishes to suit process equipment, corrosion-resistant service and engineering requirements.
| Specification | Stainless Steel 317L Seamless Tubes |
|---|---|
| Material | Stainless Steel |
| Grade | 317L |
| UNS | S31703 |
| Tube Type | Seamless |
| ASTM Standards | ASTM A213, ASTM A269 |
| ASME Standards | ASME SA213, Applicable ASME SA 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 317L Seamless Tube Size Chart
Stainless Steel 317L Seamless Tubes are supplied in a range of outside diameters and wall thicknesses. Dimensions can be selected according to pressure, flow, corrosion conditions and equipment design.
| 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 317L Seamless Tube Standards
The applicable standard depends on the tube's intended use, dimensions and service conditions. Common specifications include:
| Standard | Application / Product Requirement |
|---|---|
| ASTM A213 | Seamless ferritic and austenitic alloy-steel boiler, superheater and heat-exchanger tubes |
| ASTM A269 | Seamless and welded 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 317L Seamless Tube Features
The higher molybdenum content and low-carbon chemistry of 317L provide enhanced corrosion performance for industrial equipment handling aggressive process media.
- Enhanced resistance to pitting and crevice corrosion
- Higher molybdenum content than 304 stainless steel
- Good resistance to aggressive chemical environments
- Low-carbon composition for improved weldability
- Good resistance to general corrosion
- Excellent toughness and ductility
- Good performance in chloride-containing environments
- Suitable for chemical processing applications
- Good fabrication characteristics
- Available in multiple dimensions and finishes
Stainless Steel 317L Chemical Composition
The alloy chemistry of Stainless Steel 317L is designed around elevated chromium, nickel and molybdenum levels, with a reduced carbon content to support corrosion resistance and fabrication performance.
| Element | Composition (%) |
|---|---|
| Chromium | 18.0 - 20.0 |
| Nickel | 11.0 - 15.0 |
| Molybdenum | 3.0 - 4.0 |
| Carbon | 0.030 max. |
| Manganese | 2.00 max. |
| Silicon | 0.75 max. |
| Phosphorus | 0.045 max. |
| Sulfur | 0.030 max. |
| Iron | Balance |
Stainless Steel 317L Mechanical Properties
Stainless Steel 317L offers a combination of strength, ductility and corrosion resistance suitable for demanding process and tubular applications.
| Property | Minimum Requirement |
|---|---|
| Tensile Strength | 515 MPa min. |
| Yield Strength | 205 MPa min. |
| Elongation | 35% min. |
| Density | Approx. 8.0 g/cm³ |
Note: Final mechanical requirements should be checked against the applicable ASTM or ASME specification and the supplied material test certificate.
Stainless Steel 317L Seamless Tube Applications
The corrosion-resistant characteristics of 317L make it suitable for equipment handling aggressive chemicals, chloride-bearing fluids and other demanding industrial media.
Chemical Processing
Used in process equipment exposed to aggressive chemicals and corrosive fluids.
Petrochemical Equipment
Applied in selected process systems where enhanced corrosion resistance is required.
Pollution Control
Used in equipment handling corrosive gases, liquids and process streams.
Pulp & Paper
Suitable for process equipment exposed to corrosive chemicals used in pulp and paper production.
Pharmaceutical Equipment
Used in selected process and fluid-handling equipment requiring corrosion-resistant tubing.
Marine Applications
Used in selected systems exposed to chloride-containing and marine environments.
Industries Using Stainless Steel 317L Seamless Tubes
317L seamless tubing is selected by industries where stronger corrosion resistance and reliable performance in aggressive process environments are important.
Chemical Industry
Used in corrosive process equipment and chemical-handling systems.
Petrochemical Industry
Applied in process equipment exposed to demanding chemical environments.
Pulp & Paper Industry
Used in process systems where resistance to chemical corrosion is required.
Marine Industry
Selected for equipment exposed to chloride-rich and marine service conditions.
Pharmaceutical Industry
Used in corrosion-resistant process and fluid-handling systems.
Engineering Industry
Used for specialized equipment requiring enhanced stainless steel corrosion resistance.
Frequently Asked Questions
Stainless Steel 317L Seamless Tubes are low-carbon austenitic stainless steel tubes manufactured from Stainless Steel 317L (UNS S31703 / WNR 1.4438). They provide exceptional corrosion resistance, excellent weldability, and superior resistance to aggressive chemical environments.
Our Stainless Steel 317L Seamless Tubes are manufactured according to ASTM A213, ASTM A269, ASME SA213, and ASME SA269 international standards.
SS 317L Seamless Tubes offer excellent resistance to pitting, crevice corrosion, intergranular corrosion, chlorides, sulfuric acid, and aggressive chemicals while maintaining excellent weldability and long service life.
They are widely used in chemical processing plants, fertilizer industries, pulp & paper mills, petrochemical facilities, desalination plants, pharmaceutical manufacturing, marine engineering, heat exchangers, and power generation industries.
SS 317L 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.
Stainless Steel 317L has a lower carbon content than SS 317, which minimizes carbide precipitation during welding and improves resistance to intergranular corrosion while maintaining excellent resistance to aggressive chemical environments.
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 317L Seamless Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Stainless Steel 317L Seamless Tubes with ready stock, certified quality, competitive pricing, stringent quality control, export-standard packaging, complete documentation, and dependable worldwide delivery for critical corrosion-resistant industrial applications.