Stainless Steel 317L Pipe
Steel Pipe & Tubes has been a leading supplier of Stainless Steel piping solutions.
Stellar Alloys is a trusted manufacturer, stockist and global exporter of Stainless Steel 317L Pipes and Tubes, serving industries that demand exceptional corrosion resistance and reliable performance. With more than 25 years of experience, we have built a reputation for delivering high-quality stainless steel piping solutions for sectors such as chemical processing, pulp & paper, marine, pharmaceuticals, oil & gas and food processing.
Our comprehensive product portfolio includes ASTM A312 TP317L Seamless Pipes, Welded Pipes, Seamless Tubes and Welded Tubes, all manufactured under ASTM, ASME, DIN and EN standards. Each product undergoes strict quality checks like hydrostatic testing, radiography, PMI and ultrasonic inspection to ensure superior strength, durability and corrosion resistance.
By maintaining a large inventory and leveraging advanced production capabilities, Stellar Alloys supports both bulk export requirements and project-specific custom orders. With ISO 9001 and PED-certified facilities, backed by a robust international supply chain, we are the preferred partner for EPC contractors, OEMs and procurement engineers across 40+ countries.
SS 317L Pipe Suppliers, ASTM A312 TP317L Seamless & Welded Tube, Price List & Weight Chart
What is Stainless Steel 317L Pipe?
Stainless Steel 317L (UNS S31703, WNR 1.4438) is a low-carbon version of 317 stainless steel. It offers high resistance to pitting, crevice corrosion and stress corrosion cracking thanks to its molybdenum-rich composition. The low carbon content minimizes carbide precipitation during welding, making it highly suitable for welded constructions in aggressive environments.
Typical applications include chemical processing plants, desalination units, pulp & paper bleaching equipment and marine structures where long service life and corrosion resistance are critical.
Types & Popular Variants of SS 317L Seamless & Welded Pipe
SS 317L ERW Pipe
Stainless Steel 317L Welded Pipes
317L Stainless Steel Seamless Pipe
Equivalent Material Grades of SS 317L Pipe
Equivalent grades help buyers and engineers cross-reference Stainless Steel 317L across different international standards. The table below lists the most widely accepted designations used in ASTM, ASME, EN, JIS and UNS specifications.
| Standard | Grade |
| ASTM / ASME | A312 TP317L |
| UNS | S31703 |
| WNR | 1.4438 |
| JIS | SUS 317L |
| EN | X2CrNiMo18-15-4 |
Specifications & Standards of ASTM A312 TP317L Seamless & Welded Pipe
ASTM A312 TP317L Seamless Pipe Specifications
Seamless SS 317L pipes are designed for high-corrosion and pressure service where uniformity, durability and strength are critical. Manufactured as per ASTM A312, these pipes are available in multiple sizes, schedules and finishes to suit diverse industrial requirements.
| Parameter | Range |
| Size | ½” NB – 16” NB |
| Thickness | Sch 5S – Sch XXS |
| Length | Single Random, Double Random, Cut Lengths |
| Finish | Annealed, Pickled, Polished |
ASTM A312 TP317L Welded, ERW & EFW Pipe Specifications
Welded, ERW and EFW stainless steel 317L pipes are widely chosen for larger diameters and cost-efficient supply. These pipes are produced with precise tolerances and offered in various shapes, finishes and end conditions to meet project needs.
| Parameter | Range |
| Size | ½” NB – 24” NB |
| Shape | Round, Square, Rectangular |
| Finish | Bright Annealed, Polished, Pickled |
| Ends | Beveled, Plain, Threaded |
Tensile Strength, Yield Strength & Temperature Limit of SS 317L Pipe
The mechanical properties of SS 317L pipes define their ability to perform in corrosive, high-stress and high-temperature environments. The table below shows the minimum tensile strength, yield strength, elongation, hardness and maximum service temperature.
| Property | Value |
| Tensile Strength | 485 MPa (min) |
| Yield Strength (0.2% Proof) | 170 MPa (min) |
| Elongation | 40% min |
| Hardness | ≤ 217 HB |
| Service Temperature | up to 870 °C (continuous) |
Dimensions, Sizes & Schedules of SS 317L Pipe
317L Stainless Steel Pipe Sizes & Dimensions (Inch & Metric)
SS 317L pipes are manufactured in a wide range of diameters and wall thicknesses to meet diverse industrial requirements. The table below shows the standard dimensional range.
| Outside Diameter (OD) | Wall Thickness Range | Length |
| 6.35 mm – 600 mm | 0.5 mm – 50 mm | 5 m – 12 m |
SS 317L Pipe Schedule & Wall Thickness
Pipe schedules define the wall thickness and pressure rating of SS 317L pipes. Below is a quick reference for common schedules.
| Schedule | Wall Thickness (inches) | Wall Thickness (mm) |
| Sch 5S | 0.065” | 1.65 mm |
| Sch 10S | 0.083” | 2.11 mm |
| Sch 40 | 0.109” | 2.77 mm |
| Sch 80 | 0.147” | 3.73 mm |
| Sch 160 | 0.250” | 6.35 mm |
| XXS | 0.500” | 12.70 mm |
Schedule 40 Stainless Steel 317L Pipe Dimensions
Schedule 40 is one of the most widely used classes for SS 317L pipes in process and structural industries. Typical values are provided below.
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Wall Thickness (mm) | Weight (kg/m) |
| ½” | 21.3 mm | 2.77 | 1.29 |
| 1” | 33.4 mm | 3.38 | 2.72 |
| 2” | 60.3 mm | 3.91 | 5.44 |
| 4” | 114.3 mm | 6.02 | 18.97 |
| 6” | 168.3 mm | 7.11 | 29.74 |
Size Schedule Chart for SS 317L Welded & ERW Tubes
SS 317L welded and ERW tubes are produced in various schedules to handle different pressures and applications.
| Tube OD (mm) | Schedule | Wall Thickness (mm) | Application |
| 21.3 | Sch 40 | 2.77 | General piping |
| 48.3 | Sch 80 | 5.08 | High-pressure lines |
| 88.9 | Sch 160 | 7.62 | Boilers & heat exchangers |
| 114.3 | Sch XXS | 12.70 | Heavy-duty service |
Chemical, Mechanical & Physical Properties of SS 317L Pipe
The performance of Stainless Steel 317L Pipes is defined by their balanced chemical composition, reliable mechanical strength and stable physical properties. The following tables outline the standard composition and key property values that make SS 317L suitable for demanding industrial applications.
Chemical Composition (UNS S31703)
| Element | % |
| C | ≤0.03 |
| Mn | ≤2.00 |
| Si | ≤0.75 |
| Cr | 18.0–20.0 |
| Ni | 11.0–15.0 |
| Mo | 3.0–4.0 |
| Fe | Balance |
Mechanical & Physical Properties of SS 317L Pipes
The durability and performance of Stainless Steel 317L pipes are defined by their mechanical and physical characteristics. The table below provides standard reference values at room temperature.
| Property | Value |
| Density | 8.0 g/cm³ |
| Modulus of Elasticity | 193 GPa |
| Thermal Conductivity | 16 W/m·K (20°C) |
| Electrical Resistivity | 740 nΩ·m |
| Specific Heat Capacity | 500 J/kg·K |
Weight, Pressure & Tolerances of ASTM A312 TP317L Pipe
Accurate weight, pressure ratings and tolerance values are essential for material planning, shipping and safe design. The table below shows the approximate weights of SS 317L pipes per meter length, based on outside diameter and wall thickness.
| OD (mm) | Wall (mm) | Weight (kg/m) |
| 21.3 | 2.77 | 1.29 |
| 33.4 | 3.38 | 2.72 |
| 60.3 | 3.91 | 5.44 |
| 114.3 | 6.02 | 18.97 |
SS 317L Pipe Weight Chart (Per Meter Length)
Weight calculation plays a vital role in planning transport, material handling and overall project cost estimation. The table below provides approximate weights of SS 317L pipes per meter length, based on their outside diameter and wall thickness.
| Outside Diameter (mm) | Wall Thickness (mm) | Weight (kg/m) |
| 21.3 | 2.77 | 1.29 |
| 48.3 | 3.68 | 4.04 |
| 88.9 | 5.49 | 11.06 |
| 168.3 | 7.11 | 29.74 |
| 323.9 | 10.31 | 82.48 |
317L SS Pipe Pressure Rating & Tube Pressure Chart
The pressure-handling capacity of SS 317L Pipes is determined by their nominal size and wall thickness (schedule). The table below highlights the approximate pressure ratings for common sizes under Sch 40 and Sch 80 at ambient temperature, as per ASME B31.1 and B31.3 design standards.
| Nominal Pipe Size (NPS) | Sch 40 Pressure Rating (psi) | Sch 80 Pressure Rating (psi) |
| 1” | 2220 | 2960 |
| 2” | 1950 | 2660 |
| 4” | 1620 | 2200 |
| 6” | 1490 | 2030 |
| 8” | 1370 | 1870 |
Heat Treatment & Welding of 317L Stainless Steel Pipe
Proper heat treatment and welding practices are essential to preserve the corrosion resistance and mechanical integrity of SS 317L Pipes. The guidelines below explain the standard annealing process, weldability, recommended filler materials and best practices to achieve reliable performance in aggressive service conditions.
Heat Treatment Guidelines for Alloy 317L Pipes
Solution Annealing
SS 317L pipes are typically solution annealed at 1010–1120 °C, followed by rapid water quenching. This process restores corrosion resistance, enhances ductility and relieves stresses caused by fabrication or cold working.
Non-Hardenable by Heat Treatment
Unlike martensitic steels, SS 317L cannot be hardened through heat treatment. Strength improvements can only be achieved via cold working methods, making it ideal for welded structures exposed to corrosive environments.
Suitable Welding Electrodes & Filler Materials for SS 317L Pipe
Recommended Electrodes/Filler Wires
The preferred consumables are AWS E317L electrodes and ER317L filler wires which match the base metal composition. These fillers help maintain resistance to intergranular corrosion and prevent sensitization in the weld zone. Nickel-based fillers may also be used for dissimilar metal welding.
Welding Practices
SS 317L pipes can be welded using TIG, MIG or SMAW processes with proper shielding gases. Controlled heat input is critical to reduce distortion and avoid carbide precipitation. Post-weld cleaning (pickling and passivation) is strongly recommended to restore full corrosion resistance.
317L Stainless Steel Pipe Processing
The processing of SS 317L Pipes involves a series of carefully controlled steps to achieve the required strength, surface finish and dimensional accuracy for industrial use. Each stage is performed under strict quality standards to ensure reliability in service.
Cold Drawing: Pipes and tubes are precision-drawn through dies to achieve exact dimensions, smooth surfaces and tighter tolerances. This process improves strength and enhances surface quality.
Annealing: Pipes are subjected to controlled heat treatment at high temperatures (solution annealing) followed by rapid quenching. This restores corrosion resistance, improves ductility and relieves stresses induced during fabrication.
Pickling & Passivation: After annealing, pipes undergo acid cleaning (pickling) to remove scale, oxides and impurities. Passivation further enhances the protective chromium oxide layer, improving corrosion resistance.
Polishing & Surface Finishing: Depending on the requirement, pipes are supplied in polished, bright-annealed or pickled finish. Polishing improves aesthetics, reduces surface roughness and is especially preferred in architectural and sanitary applications.
Cutting & Beveling: Pipes are cut to standard or custom lengths using precision cutting machines. Ends are supplied plain, beveled or threaded, depending on application requirements such as welding or threaded fittings.
Quality Testing: Final inspection includes hydrostatic testing, PMI, ultrasonic and dimensional checks to ensure pipes conform to ASTM and ASME standards before dispatch.
Testing, Marking & Certification of SS 317L Seamless Pipe
To ensure quality, compliance and international acceptance, every SS 317L seamless pipe is rigorously tested, clearly marked and supplied with globally recognized certifications. This section covers the standard testing procedures, marking details and trade names under which SS 317L pipes are identified worldwide.
Marking on ASTM A312 TP317L Pipe
Each pipe is permanently marked with essential details such as Grade (317L), Outside Diameter (OD), Wall Thickness (WT), Heat Number, Standard (ASTM/ASME) and Manufacturer’s Logo. This ensures complete traceability from production to end-use, allowing buyers and inspectors to quickly verify compliance with order specifications.
SS 317L Seamless Pipe Certification & Test Reports
All pipes are delivered with EN 10204 3.1 / 3.2 Mill Test Certificates (MTCs) confirming chemical analysis and mechanical property compliance. Additional reports provided on request include:
PMI Test (Positive Material Identification): Ensures the supplied pipes are made of the correct alloy grade and composition, eliminating the risk of material mix-ups in critical projects.
IGC Test (Intergranular Corrosion): Confirms resistance to grain boundary corrosion, making SS 317L suitable for welded structures in aggressive chemical environments.
Hydrostatic & Pressure Tests: Each pipe is subjected to high-pressure water testing to verify leak-proof construction and safe performance under operating conditions.
Ultrasonic & Eddy Current Testing: Non-destructive tests that detect surface and internal flaws, ensuring defect-free pipes with uniform wall thickness and strength.
Radiography (X-ray) Test Reports: Provides a detailed image of the weld seam or pipe structure to verify the absence of cracks, porosity or hidden defects.
Other Trade Names of Stainless Steel 317L Pipe [Images]
In global markets, Stainless Steel 317L Pipes are identified by various alternative names and standards. These trade names make it easier for buyers, engineers and procurement teams to cross-reference material specifications across different international standards and suppliers.
| Standard / System | Trade Name / Equivalent | Region / Notes |
| AISI | 317L | American Iron & Steel Institute |
| ASTM | 317L | ASTM International specification |
| EN | 1.4449 | European Standard |
| JIS | SUS 317L | Japanese Industrial Standards |
| UNS | S31703 | Unified Numbering System (US) |
| Werkstoff | 1.4449 | German standard material number |
| DIN | X2CrNiMo17-12-2 | German DIN specification equivalent |
| Inox | 317L | Common European/International term for stainless steel |
Price List & Stock Availability of SS 317L Pipe in India
At Stellar Alloys, we maintain a large ready stock of Stainless Steel 317L seamless and welded pipes to meet urgent project requirements across India and global markets. Our inventory covers a wide range of diameters, wall thicknesses and schedules, including ½” NB to 16” NB in seamless pipes and up to 24” NB in welded and ERW forms.
We offer competitive pricing in the Indian market through efficient sourcing, bulk procurement and in-house testing facilities. Prices typically range from ₹350/kg to ₹650/kg, depending on pipe type (seamless or welded), size, thickness, finish (annealed, polished, pickled) and applicable standards (ASTM A312 / ASME SA312). Bulk orders and long-term supply contracts are eligible for special pricing and faster deliveries.
Our warehouses in Mumbai and other major industrial hubs are well-equipped to handle cut-to-length orders, custom machining and export-grade packaging. Every dispatch is supported with EN 10204 3.1/3.2 Mill Test Certificates (MTCs), test reports and accurate markings to meet international project documentation requirements.
For the latest SS 317L pipe price list in India or to check stock availability for your required size and schedule, you can request a custom quotation. Our team ensures quick response times, transparent pricing and reliable doorstep delivery across India and exports to over 40 countries.
Values are indicative and vary with product form, size, heat treatment and test direction. Always confirm with the heat-specific MTC and apply ASME B31.x allowables and temperature derating where required.
Why Choose Stellar Alloys for 317L Stainless Steel Pipe & Tubes?
Selecting the right supplier for Stainless Steel 317L pipes and tubes is crucial for industries that demand corrosion resistance, long service life and global compliance. Stellar Alloys combines decades of expertise with certified manufacturing and a strong export network, making us a trusted partner for critical applications worldwide.
Over 25 years of global supply experience
Stellar Alloys has been serving industries like chemical processing, pulp & paper, oil & gas and marine engineering for more than two decades. Our proven track record highlights our technical know-how, consistent quality and ability to deliver both standard and customized orders.
ISO & PED-certified manufacturing
Our production facilities are accredited with ISO 9001, ISO 14001, IBR and PED 2014/68/EU certifications, ensuring every SS 317L pipe and tube meets stringent global standards. Buyers gain confidence in both product quality and environmental responsibility.
100% tested pipes with full traceability
Each batch of SS 317L pipes undergoes hydrostatic, PMI, IGC, ultrasonic and radiography testing. Along with EN 10204 3.1/3.2 Mill Test Certificates, we ensure full traceability and compliance for international project documentation.
Export to 40+ countries
We have established a strong export network, supplying SS 317L pipes and tubes to more than 40 countries worldwide. With expert logistics and packaging teams, we guarantee safe, timely and compliant deliveries to EPC contractors, OEMs and industrial end-users.
Ready stock with fast dispatch
Our large inventories in multiple sizes, schedules and grades enable us to meet urgent project requirements without delays. Whether it’s bulk export or project-specific cut-to-length supply, our stockyards are equipped for quick dispatch with proper markings.
Frequently Asked Questions About Stainless Steel 317L Pipe
SS 317L is widely used in chemical plants, pulp & paper bleaching equipment, food processing and marine applications where superior corrosion resistance is required. Its molybdenum-rich composition extends service life in harsh conditions.
SS 317L contains higher molybdenum and nickel compared to SS 316, offering better resistance to chlorides, acids and pitting. It is preferred in environments where SS 316 may fail prematurely.
Yes, SS 317L provides excellent protection against pitting and stress corrosion cracking caused by chlorides. It is especially suited for seawater exposure and chloride-bearing chemical processes.
Yes, the low carbon content of SS 317L makes it highly weldable using standard TIG, MIG or SMAW processes. It minimizes carbide precipitation, reducing the risk of intergranular corrosion after welding.
SS 317L pipes can be used continuously at temperatures up to 870 °C and intermittently up to 925 °C. This makes them reliable for high-temperature chemical and marine applications.
