SS 317 / 317L Pipe & Tube Manufacturer in India – All Grades, Sizes & Standards
Engineered for aggressive sulphuric acid, chloride, and reducing acid service conditions, SS 317 / 317L Pipe and Tube is specified across chemical, oil & gas, pharmaceutical, and power generation applications where standard 316L has already failed in service.
We produce, stock and export all types of SS 317 and SS 317L pipes, tubes, seamless pipes, welded tubes which are fully standardised as per ASTM A312, ASTM A213, ASTM A249, ASTM A269 and ASTM A358. Producing high-quality metals and alloys, our in-house quality testing and our global supply chain make us your preferred supplier for procurement teams in the chemical, oil & gas, petrochemical, pharmaceutical and power generation industries. SS 317L pipe has a density of 8.0 g/cm 3, a tensile strength of 515 MPa and excellent resistance to chloride pitting and crevice corrosion, which is superior to that of conventional austenitic grades, especially in acidic chloride environments. Aashish Metal & Alloys supplies SS 317 and 317L pipe with full mill test certificates, competitive pricing, and dispatch from Mumbai to projects worldwide.
What Is Stainless Steel 317 / 317L? Expert Material Overview
Two low carbon austenitic stainless steels that have been designed to be molybdenum bearing, stainless steel 317 and 317L, have been developed to provide superior resistance to corrosive conditions. The ‘L’ in 317L indicates that it is an ultra-low carbon (max 0.035%) material, making it the material of choice for fabricated assemblies that will be in contact with corrosive environments or elevated temperatures during welding.
These alloys are generally resistant to stress corrosion cracking, pitting, crevice corrosion and general corrosion, with dramatically improved resistance compared to the 304 and 316 conventional grades, through addition of molybdenum (3–4%) and higher levels of chromium (18–20%) and nickel (11–15%). Their excellent formability and non-magnetic property (annealed) broadens their application field into a wide range of industries.
- Stainless Steel 317 / 317L Pipes & Tubes Specifications
- Stainless Steel 317 / 317L Pipes & Tubes Equivalent Grades
- Stainless Steel 317 / 317L Pipes & Tubes Quality and Test reports
- Related Types Of Stainless Steel 317 / 317L Pipes & Tubes
- 317 / 317L Stainless Steel Pipes, Tube Stock and Supply Range
- 317 / 317L Stainless Steel Pipe & Tube Dimensions
- 317 / 317L Stainless Steel Pipe & Tubes Sizes
- Stainless Steel 317 / 317L Pipes & Tubes Pressure Ratings
- Chemical Composition
- Mechanical Properties
- Stainless Steel 317 / 317L Pipes & Tubes price list
- We supply of variety SS 317 / 317L Pipe & Tubing
- Application Of SS 317 / 317L Pipes & Tubes
Chemical Composition of SS 317 / 317L Pipe & Tube (ASTM A312 Standard)
| Grade | C Max | Mn Max | Si Max | P Max | S Max | Cr | Mo | Ni |
|---|---|---|---|---|---|---|---|---|
| SS 317 | 0.08 | 2.0 | 1.0 | 0.045 | 0.030 | 18–20 | 3–4 | 11–15 |
| SS 317L | 0.035 | 2.0 | 1.0 | 0.045 | 0.030 | 18–20 | 3–4 | 11–15 |
Mechanical Properties of SS 317 / 317L Pipe & Tube
| Property | Density | Melting Point | Tensile Strength | Yield Strength | Elongation | Hardness (Rockwell B) | Elastic Modulus | Thermal Conductivity |
|---|---|---|---|---|---|---|---|---|
| SS 317 / 317L | 8.0 g/cm³ | 1371–1421°C | 515 MPa min | 205 MPa min | 35% min | 75 max | 193 GPa | 16.2 W/m·K at 100°C |
Standard Specification for SS 317 / 317L Pipes & Tubes
| Specification | Description | Size / Scope |
|---|---|---|
| Outside Diameter | Round, Square, Rectangular, Hydraulic | 6.00 mm OD – 914.4 mm OD (up to 24″ NB) |
| Wall Thickness | Standard & Custom Wall | 0.3 mm – 50 mm |
| Seamless Pipe Size | SA213 / ASTM A312 | 1/8″ NB – 24″ NB |
| ERW Pipe Size | ASTM A312 / SA312 | 1/8″ NB – 36″ NB |
| EFW Pipe Size | ASTM A358 / SA358 | 6″ NB – 100″ NB |
| Schedule | All standard schedules | SCH 5, 10, 20, 40, 80, 160, XXS, STD, XS |
| Length | Fixed, Random, Custom | Single Random, Double Random, Required Length |
| End Types | Standard finish types | Plain End (PE), Beveled End (BE), Threaded (TE) |
ASTM / ASME Manufacturing Standards for SS 317L Pipe & Tube
| ASTM | ASME | Application Description |
|---|---|---|
| ASTM A312 | SA 312 | Seamless & welded austenitic stainless pipe for high-temp and corrosive service |
| ASTM A213 | SA 213 | Seamless & welded austenitic stainless steel tubing for boilers/heat exchangers |
| ASTM A249 | SA 249 | Welded austenitic boiler, superheater, condenser, and heat exchanger tubes |
| ASTM A269 | SA 269 | Seamless & welded austenitic stainless steel tubing for general service |
| ASTM A358 | SA 358 | Electric fusion-welded austenitic stainless pipe for corrosive/high-temp service up to 8″ |
| ASTM A376 | SA 376 | Seamless austenitic pipe for high-temperature central-station service |
| ASTM A554 | SA 554 | Welded stainless steel mechanical tubing including square pipe |
Related Types Of Stainless Steel 317 / 317L Pipes & Tubes
SS 317 / 317L Seamless Pipe
SS 317 / 317L Welded Pipe
SS 317 / 317L ERW Pipe
SS 317 / 317L EFW Pipe
SS 317 / 317L Seamless Tubes
SS 317 / 317L Welded Tubes
SS 317 / 317L ERW Tubes
SS 317 / 317L Square Tubes
SS 317 / 317L Rectangle Tubes
SS 317 / 317L Round Tubes
SS 317 / 317L Square Pipe
SS 317 / 317L Rectangular Pipe
SS 317 / 317L Round Pipe
SS 317 / 317L Heat Exchanger Tube
SS 317 / 317L Capillary Tubing
SS 317 / 317L Electropolished Pipes
Surface Finish & Delivery Conditions
| Finish Code | Description |
|---|---|
| 2B | Standard cold-rolled mill finish – most common, smooth and bright |
| No.1 (1D) | Hot rolled, annealed & pickled – rough finish for industrial use |
| No.4 (4K) | Polished brushed finish – widely used in food processing and pharma |
| BA (Bright Annealed) | High reflectivity, mirror-like; decorative and hygienic applications |
| Electropolished | Ultra-smooth; eliminates micro-crevices; ideal for pharmaceutical/biotech |
| Mirror (No.8) | Highest reflectivity for decorative and optical applications |
Industries & Applications – Where SS 317 / 317L Excels
| Industry | Typical Applications |
|---|---|
| Chemical Industry | Acid storage tanks, chemical reactors, scrubbers, process piping, heat exchangers |
| Oil & Gas | Offshore platforms, refinery piping, desulfurization units, cooling systems |
| Pharmaceutical | Sanitary tubing, sterile fluid transfer, bioprocessing vessels, clean-in-place (CIP) |
| Power Generation | Boiler tubes, feedwater heaters, condensers, flue gas desulfurization (FGD) |
| Pulp & Paper | Bleach plant piping, digester lines, chemical recovery systems |
| Food Processing | Food contact piping, beverage lines, dairy processing, CIP/SIP systems |
| Marine | Seawater cooling, ballast systems, hull fittings, offshore structural components |
| Desalination | Multi-stage flash evaporators, brine piping, reverse osmosis system components |
SS 317L vs 316L vs 304
| Property | SS 304 | SS 316L | SS 317L (Best) |
|---|---|---|---|
| Mo Content | None | 2–3% | 3–4% ★ |
| Cr Content | 18–20% | 16–18% | 18–20% ★ |
| Pitting Resistance | Low | Medium | High ★ |
| Crevice Corrosion | Poor | Good | Excellent ★ |
| Weld Sensitization | Moderate | Low (L-grade) | Very Low ★ (L-grade) |
| Acidic Chloride Resistance | Poor | Moderate | Superior ★ |
★ = Best in class for that property
Quality Testing & Inspection at Aashish Metal & Alloys
Every SS 317 / 317L pipe and tube leaving our facility undergoes a rigorous multi-stage quality inspection protocol in accordance with ASTM, ASME, and third-party requirements. Our testing capabilities include:
- Hydrostatic Testing – Confirms pressure integrity up to rated limits
- Eddy Current Testing (ECT) – Detects surface and near-surface discontinuities
- Ultrasonic Testing (UT) – Internal flaw detection in seamless pipes
- Positive Material Identification (PMI) – Guarantees alloy composition
- Radiographic Testing (RT) – Weld seam integrity for welded pipes
- Intergranular Corrosion Test (IGC / ASTM A262) – Sensitization detection
- Tensile & Hardness Testing – Confirms mechanical property compliance
- Visual & Dimensional Inspection – Every piece before dispatch
- NACE MR0175 / HIC Testing – For sour service applications
Certifications, Approvals & Quality Standards
| Certification / Approval | Scope |
|---|---|
| ISO 9001:2015 | Quality Management System – Manufacturing & Supply |
| PED 97/23/EC | European Pressure Equipment Directive compliance |
| EN 10204 3.1 / 3.2 | Material Test Certificates – Mill Test Reports |
| NACE MR0175 | Sour service / sulfide stress corrosion cracking |
| AD2000 / EIL / ONGC | Special industrial and energy sector approvals |
| IBR Approved | Indian Boiler Regulations compliance for pressure applications |
SS 317L Pipe & Tube – Indicative Price Range
| Product Type | Size / Form | FOB Price Range |
|---|---|---|
| 317L Seamless Pipe | All standard NB | USD 1,000 – 4,000 / Ton |
| 317L Welded Pipe | ERW / EFW | USD 700 – 2,800 / Ton |
| 317L Square Tube | Standard sections | USD 900 – 2,000 / Ton |
| Micro Capillary Tubes | Small diameters | USD 4.00 – 6.50 / Kg |
| Thin Wall Pipe | Decorative / precision | USD 1.82 – 2.00 / Kg |
Note: Prices are indicative and subject to market conditions, quantity, and specifications. Contact us for a firm quote.
FAQs - SS 317L Pipe & Tube
The primary difference is carbon content. SS 317 has a maximum carbon content of 0.08%, while SS 317L is limited to 0.035% maximum carbon. The low carbon in 317L prevents carbide precipitation (sensitization) in the heat-affected zone during welding, making it significantly better suited for welded fabrications exposed to corrosive environments. For most industrial applications requiring welding, SS 317L is the preferred choice.
Key ASTM standards include: ASTM A312 (seamless and welded austenitic stainless pipe), ASTM A213 (seamless tubes for boilers and heat exchangers), ASTM A249 (welded boiler/heat exchanger tubes), ASTM A269 (general service seamless and welded tubes), and ASTM A358 (EFW pipe for corrosive and high-temperature service up to 8 inches). The equivalent ASME standards are SA312, SA213, SA249, SA269, and SA358 respectively.
We maintain a ready stock of seamless pipes from 1/8″ NB to 24″ NB, ERW pipes from 1/8″ NB to 36″ NB, and EFW pipes from 6″ NB to 100″ NB. Outside diameters range from 6.00 mm to 914.4 mm. Wall thicknesses range from 0.3 mm to 50 mm, covering Schedules 5, 10, 20, 40, 80, 160, XXS, STD, and XS. Custom sizes can be manufactured on request.
SS 317L contains 3–4% molybdenum versus 2–3% in SS 316L. This extra molybdenum provides substantially higher resistance to pitting corrosion and crevice corrosion, especially in reducing acids, chloride-containing environments, and acidic process streams. In sulphuric acid, acetic acid, and other aggressive chemical media encountered in chemical processing plants, 317L significantly outperforms 316L and extends equipment service life considerably.
Yes. SS 317L pipe is suitable for continuous service up to 870°C and intermittent service up to 925°C. At temperatures above 425°C, low-carbon 317L is preferred over standard 317 to minimise carbide precipitation. It is resistant to oxidation up to 600°F (316°C) for continuous service. For high-temperature applications, the material is typically specified per ASTM A376 (seamless austenitic pipe for high-temperature central station service) and ASTM A358 grades.
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