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Stainless Steel 317L Seamless Pipes are low-carbon austenitic stainless steel pipes designed for applications requiring enhanced corrosion resistance and reliable performance in aggressive chemical environments. The grade contains chromium, nickel and a higher molybdenum content, which provides improved resistance to pitting, crevice corrosion and various corrosive process media.
Manufactured without a longitudinal weld seam, Stainless Steel 317L Seamless Pipes provide uniform construction for demanding pressure and process piping systems. The low carbon content helps reduce the risk of chromium carbide precipitation during welding and thermal exposure, while the molybdenum-bearing composition supports corrosion resistance in challenging service conditions.
Stainless Steel 317L Seamless Pipes are used in chemical processing plants, petrochemical facilities, pulp and paper equipment, power generation systems, marine applications and other industries where resistance to aggressive chemicals and localized corrosion is important. They are available in different outside diameters, wall thicknesses, schedules, and lengths according to applicable standards and project requirements.
Kamal Steels is a Stainless Steel 317L Seamless Pipes Manufacturer & Stockist in India, supplying SS 317L Seamless Pipes in standard and customized sizes, schedules, wall thicknesses and lengths. Products can be supplied with applicable testing, inspection, material certificates and documentation according to customer and project specifications.
| Specification | Details |
|---|---|
| Product Name | Stainless Steel 317L Seamless Pipe |
| Grade | SS 317L / Type 317L |
| UNS | S31703 |
| EN Grade | 1.4438 |
| Material Type | Low Carbon Molybdenum-Bearing Austenitic Stainless Steel |
| Manufacturing Process | Seamless |
| Product Standard | ASTM A312 |
| ASME Specification | ASME SA312 |
| Size Range | 1/8" to 24" and above as required |
| Schedule | 5S, 10S, 40S, 80S, 160 and other schedules |
| Wall Thickness | As per applicable schedule or specified requirement |
| Length | Random, Double Random or Fixed Length |
| End Type | Plain End, Bevelled End or Threaded End as required |
| Surface Finish | Pickled & Passivated, Annealed, Bright Annealed or Polished |
| Heat Treatment | Solution Annealed and Rapidly Cooled as specified by the applicable standard |
| Testing | Hydrostatic, PMI, Ultrasonic, Flattening, Flaring and other applicable tests |
| Inspection | Third Party Inspection available as required |
| Certification | EN 10204 3.1 / Material Test Certificate (MTC) |
| Packaging | Bundles, Wooden Cases, Wooden Boxes, Plastic End Caps and Export Packing |
Stainless Steel 317L Seamless Pipes are manufactured in a wide range of nominal pipe sizes to meet the requirements of chemical processing, petrochemical, marine, pharmaceutical, food processing, and power generation industries. Standard dimensions comply with ASTM A312, ASME SA312, ANSI B36.19M, and ANSI B36.10M specifications.
| NPS / Size | Outside Diameter (OD) | Typical Application |
|---|---|---|
| 1/8" | 10.3 mm | Instrumentation and precision tubing |
| 1/4" | 13.7 mm | Chemical dosing lines |
| 1/2" | 21.3 mm | Utility and process piping |
| 3/4" | 26.7 mm | Industrial fluid transfer |
| 1" | 33.4 mm | Chemical process lines |
| 1 1/4" | 42.2 mm | General industrial applications |
| 1 1/2" | 48.3 mm | Corrosive fluid handling |
| 2" | 60.3 mm | Petrochemical pipelines |
| 3" | 88.9 mm | Process equipment connections |
| 4" | 114.3 mm | Industrial process piping |
| 6" | 168.3 mm | Large process and utility lines |
Standard SS 317L seamless pipes are available in sizes ranging from 1/8" NB to 24" NB, with wall thicknesses manufactured according to the selected schedule and applicable dimensional standards.
The theoretical weight of Stainless Steel 317L Seamless Pipes depends on the outside diameter, wall thickness, pipe schedule, and length. These values are useful for estimating transportation, fabrication, and project material requirements.
| NPS / Size | SCH 10 Weight (kg/m) | SCH 40 Weight (kg/m) | SCH 80 Weight (kg/m) |
|---|---|---|---|
| 1/2" | 0.63 | 0.84 | 1.10 |
| 3/4" | 0.80 | 1.12 | 1.48 |
| 1" | 1.01 | 1.40 | 1.81 |
| 1 1/4" | 1.28 | 1.79 | 2.35 |
| 1 1/2" | 1.45 | 2.16 | 2.86 |
| 2" | 1.92 | 2.99 | 3.93 |
| 3" | 3.05 | 4.70 | 6.39 |
| 4" | 4.38 | 6.47 | 8.63 |
| 6" | 7.31 | 10.75 | 14.32 |
The values shown are theoretical weights calculated according to standard dimensions. Actual pipe weights may vary slightly depending on manufacturing tolerances, wall thickness, and applicable ASTM or ASME specifications.
Stainless Steel 317L Seamless Pipes are supplied in multiple schedules to suit varying pressure and temperature requirements across industrial applications. The appropriate schedule should be selected based on design pressure, operating conditions, and applicable piping codes.
| Schedule | Wall Type | Typical Application |
|---|---|---|
| SCH 5S | Light Wall | Low-pressure process systems |
| SCH 10S | Light Wall | Chemical and pharmaceutical piping |
| SCH 40S | Medium Wall | General industrial applications |
| SCH 80S | Heavy Wall | High-pressure process lines |
| SCH 160 | Extra Heavy Wall | Critical pressure services |
| XXS | Double Extra Heavy | Severe operating conditions |
Wall thickness varies according to nominal pipe size and schedule designation. SS 317L seamless pipes are manufactured in accordance with ANSI B36.19M and ANSI B36.10M dimensional standards.
ASTM A312 TP317L Seamless Pipe is manufactured from low-carbon austenitic stainless steel designed for high-temperature service and corrosive environments. Grade TP317L contains higher chromium, nickel, and molybdenum than TP316L, providing superior resistance to pitting, crevice corrosion, and chemical attack in chloride-containing media. The low carbon content minimizes carbide precipitation during welding, making it suitable for fabricated piping systems without compromising corrosion resistance.
ASTM A312 TP317L seamless pipes are widely used in chemical processing plants, petrochemical facilities, pulp and paper industries, marine engineering, fertilizer plants, pharmaceutical manufacturing, and power generation. They are available in multiple sizes, schedules, lengths, and end finishes to meet project specifications and international quality standards.
Kamal Steels supplies ASTM A312 TP317L Seamless Pipes manufactured in accordance with ASTM A312, ASME SA312, ANSI B36.19M, and other applicable international standards. Every pipe undergoes rigorous quality inspections, including hydrostatic testing, PMI testing, ultrasonic testing, dimensional inspection, and visual examination to ensure reliable performance in demanding industrial applications.
Stainless Steel 317L seamless and welded pipes are both widely used across industrial sectors; however, their manufacturing methods and performance characteristics differ. Seamless pipes are produced without a longitudinal weld, providing enhanced strength and pressure resistance, whereas welded pipes are manufactured by forming and welding stainless steel strip or plate, offering an economical solution for many applications.
| Feature | Seamless Pipe | Welded Pipe |
|---|---|---|
| Manufacturing Process | Hot extruded without a weld seam | Formed from plate or strip and welded |
| Weld Joint | Not Present | Present |
| Pressure Resistance | Excellent for high-pressure service | Suitable for moderate-pressure applications |
| Corrosion Resistance | Uniform throughout the pipe | Excellent when properly welded and treated |
| Dimensional Accuracy | Very Good | Excellent |
| Cost | Generally Higher | More Economical |
| Typical Applications | Oil & Gas, Petrochemical, Power Plants | Water Lines, Structural & General Industrial Service |
The selection between seamless and welded SS 317L pipes depends on operating pressure, temperature, corrosion conditions, project specifications, and budget. For critical high-pressure or highly corrosive services, seamless pipes are generally preferred, while welded pipes provide a cost-effective solution for standard industrial applications.
Stainless Steel 317L Seamless Pipes contain chromium, nickel, and molybdenum as the primary alloying elements. The higher molybdenum content provides enhanced resistance to pitting and crevice corrosion, while the low carbon content helps reduce the risk of chromium carbide precipitation during welding and thermal exposure.
| Element | Composition (%) |
|---|---|
| Carbon | 0.030 max. |
| Chromium | 18.0 - 20.0 |
| Nickel | 11.0 - 15.0 |
| Molybdenum | 3.0 - 4.0 |
| Manganese | 2.00 max. |
| Silicon | 1.00 max. |
| Phosphorus | 0.045 max. |
| Sulfur | 0.030 max. |
The chemical composition of SS 317L Seamless Pipes should be verified against the applicable ASTM or ASME specification and the material test certificate supplied with the product.
Stainless Steel 317L Seamless Pipes provide good tensile strength, yield strength, elongation, and toughness for demanding industrial piping applications. Their austenitic structure provides good ductility, while the molybdenum-bearing composition supports reliable performance in aggressive corrosive environments.
| Mechanical Property | Minimum Requirement |
|---|---|
| Tensile Strength | 515 MPa |
| Yield Strength | 205 MPa |
| Elongation | 35% |
Actual mechanical properties may vary according to the applicable specification, pipe dimensions, heat-treatment condition, and testing requirements. Final values should be confirmed against the relevant product standard and material test certificate.
Stainless Steel 317L Seamless Pipes are used in applications where enhanced corrosion resistance is required for aggressive chemicals, process media, and chloride-containing environments. The low-carbon composition combined with higher molybdenum content makes the grade suitable for demanding process piping applications.
| Application | Typical Use |
|---|---|
| Chemical Processing | Corrosive chemical process piping and fluid handling. |
| Petrochemical Equipment | Process piping exposed to aggressive process media. |
| Pulp & Paper Equipment | Corrosion-resistant process piping and equipment. |
| Power Generation | Selected process and utility piping systems. |
| Marine Equipment | Piping exposed to moisture and chloride-containing environments. |
| Heat Exchangers | Corrosion-resistant heat-transfer systems. |
| Industrial Process Systems | Fluid and process piping for demanding service conditions. |
Stainless Steel 317L Seamless Pipes are used across industries that require corrosion-resistant piping for demanding chemical and process environments. The combination of low carbon, chromium, nickel, and molybdenum provides suitable performance for applications where resistance to localized corrosion is important.
| Industry | Typical Applications |
|---|---|
| Chemical Industry | Chemical processing and corrosive fluid piping. |
| Petrochemical Industry | Process piping and corrosion-resistant equipment. |
| Pulp & Paper Industry | Process piping exposed to corrosive chemicals. |
| Oil & Gas Industry | Selected process and utility piping systems. |
| Power Generation Industry | Process and utility piping applications. |
| Marine Industry | Marine piping and chloride-exposed equipment. |
| Industrial Engineering | Corrosion-resistant process piping and fabricated systems. |
Kamal Steels supplies Stainless Steel 317L Seamless Pipes in different sizes, schedules, wall thicknesses and lengths according to customer and project requirements.
Stainless Steel 317L Seamless Pipes are low-carbon austenitic stainless steel pipes manufactured without welded joints. They offer excellent resistance to corrosion, pitting and chemical attack, making them suitable for demanding industrial applications.
The primary difference is carbon content. SS 317L contains lower carbon than SS 317, which helps reduce carbide precipitation during welding and improves resistance to intergranular corrosion.
The UNS designation for Stainless Steel 317L is UNS S31703, commonly specified for corrosion-resistant piping systems.
ASTM A312 TP317L covers seamless, welded, and heavily cold-worked austenitic stainless steel pipes intended for corrosive and high-temperature service applications.
The low carbon content of SS 317L minimizes carbide precipitation during welding, helping maintain corrosion resistance in welded structures and fabricated equipment.
SS 317L Seamless Pipes are widely used in chemical processing plants, petrochemical industries, fertilizer manufacturing, pulp and paper mills, pharmaceutical facilities and marine applications.
Yes. The higher molybdenum and nickel content of SS 317L provides excellent resistance to pitting, crevice corrosion and chemical attack in aggressive industrial environments.
TP317L Seamless Pipes are available in sizes from 1/8 inch NB to 24 inch NB and in schedules such as SCH 10S, SCH 40S, SCH 80S, SCH 160 and XXS.
Yes. Kamal Steels supplies Stainless Steel 317L Seamless Pipes with Mill Test Certificates (MTC), inspection reports and complete material traceability documentation.
Kamal Steels offers premium-quality ASTM A312 TP317L Seamless Pipes, ready stock availability, competitive pricing, strict quality control and worldwide delivery support for industrial projects.