Stainless Steel 317L Pipe Manufacturer and Supplier in India
The Stainless steel 317L is a high-molybdenum type of piping material made of stainless steel that exhibits high levels of molybdenum and is used in situations where other stainless steel grades are prone to premature corrosion. We produced all our products according to ASTM A312 TP317L and termed them UNS S31703. The grade has better resistance to pitting and crevice corrosion in chloride-bearing and acidic conditions.
Chemical processing systems, acid handling lines and marine-exposed piping are usually chosen to be SS 317L so that the corrosion performance is required to last over a long period of time. The low amount of carbon content facilitates fabrication by welding without affecting corrosion resistance of the heat-affected area.
Stellar Alloys is a large manufacturer and supplier of stainless steel 317L seamless welded pipes in construction, which serves project and recurrent procurement needs. However, in applications where lower molybdenum grades are needed, buyers can also consider Stainless Steel 316 and 316L Pipes and higher temperature or oxidation-resistant applications are often considered by using Stainless Steel 310 Pipes.
Table of Contents
- Stainless Steel 317L Pipe Product Range
- Types of Stainless Steel 317L Pipes We Supply
- Specifications of ASTM A312 TP317L Stainless Steel Pipe
- Dimensions, Sizes and Schedules of SS 317L Pipe
- Chemical Composition of UNS S31703
- Mechanical Properties of SS 317L Pipe
- Weight and Pressure Ratings of SS 317L Pipe
- Heat Treatment and Welding of 317L Stainless Steel Pipe
- Testing, Certification and Marking of SS 317L Pipe
- Stainless Steel 317L Pipe Applications
- Related Links
- Frequently Asked Questions About Stainless Steel 317L Pipe
Stainless Steel 317L Pipe Product Range
The Stellar Alloys provides stainless steel piping, which is resistant to corrosion, in various grades, and under a variety of service conditions, to meet the needs of industrial processes. Our product range is also expanded with austenitic grades of stainless steel that are applied in chemical, marine, and high-temperature applications.
Our Stainless Steel Pipes and Tubes product range such as Stainless Steel 304 and 304L Pipes could also be used by the procurement teams sourcing alternative or complementary material in case of general corrosion service or moderate chloride exposure. This grade based availability assists in ensuring compatibility of the material in mixed piping systems.
Types of Stainless Steel 317L Pipes We Supply
ASTM A312 Stainless Steel Pipe
WERKSTOFF NR.1.4449 SS 317L Pipes
ASTM A312 TP 317L SS Seamless Pipes
DIN 1.4438 SS 317L Pipes
Stainless Steel 317L Pipes
317L SS Hollow Pipe
DIN 1.4449 SS 317 Pipes
SS 317 Welded Pipes
SS 317 ERW Pipe
317l Stainless Steel Bush Hex Pipe
317l Stainless Steel Square Pipe
SS 317 Rectangular Pipe
In environments where resistance to chloride stress corrosion cracking is critical, engineers may also evaluate Super Duplex steel pipes and tubes
Specifications of ASTM A312 TP317L Stainless Steel Pipe
ASTM A312 TP317L Pipe Specification
Parameter | Specification |
Standard | ASTM A312 |
Grade | TP 317L |
UNS Designation | S31703 |
Manufacturing | Seamless / Welded / ERW |
Condition | Solution Annealed |
Ends | Plain / Beveled |
Dimensions, Sizes and Schedules of SS 317L Pipe
SS 317L Pipe Size Range
Outside Diameter | Wall Thickness | Length |
As per ASTM A312 | As per schedule | Random / Cut Length |
SS 317L Pipe Schedule Chart
Schedule | Typical Application |
Sch 10S | Low-pressure service |
Sch 40 | Process piping |
Sch 80 | High-pressure service |
Sch 160 / XXS | Severe operating conditions |
Chemical Composition and Mechanical Properties of SS 317L Pipe
Chemical Composition of UNS S31703
Element | Percentage |
Carbon | ≤ 0.03 |
Chromium | 18.0 – 20.0 |
Nickel | 11.0 – 15.0 |
Molybdenum | 3.0 – 4.0 |
Iron | Balance |
Mechanical Properties of Stainless Steel 317L Pipe
Property | Minimum Value |
Tensile Strength | As per ASTM |
Yield Strength | As per ASTM |
Elongation | As per ASTM |
Weight and Pressure Ratings of SS 317L Pipe
SS 317L Pipe Weight Chart
OD (mm) | Wall (mm) | Weight (kg/m) |
21.3 | 2.77 | 1.29 |
60.3 | 3.91 | 5.44 |
114.3 | 6.02 | 18.97 |
Pressure ratings depend on pipe schedule, temperature, and applicable ASME B31 design codes. Final allowable pressures should be confirmed against project-specific design conditions and temperature derating factors.
Corrosion Resistance and Service Performance of SS 317L Pipe
The enhanced molybdenum content in stainless steel 317L pipe improves resistance to pitting and crevice corrosion when exposed to chloride-containing and acidic media. Compared to standard austenitic grades, SS 317L provides longer service life in aggressive chemical environments.
This grade is widely used in chemical processing equipment, bleach plants, and marine-exposed piping where corrosion performance across welded joints is essential.
Heat Treatment and Welding of 317L Stainless Steel Pipe
The SS 317L pipes come in a solution-annealed state to recover the corrosion resistance and ductility upon forming. The grade is well-welded through the TIG, MIG, and SMAW welding methods.
The filler materials that are advised would be the ER317L electrodes, which assist in ensuring that there is corrosion resistance throughout the weld area. Cleaning and passivation. After piping is used in corrosive service and is recommended to be cleaned and passivated after welding.
Testing, Certification and Marking of SS 317L Pipe
Testing and Inspection
- Hydrostatic testing
- PMI (Positive Material Identification)
- Ultrasonic testing
- Dimensional inspection
Certification
- EN 10204 3.1 / 3.2 Mill Test Certificates
- Third-party inspection on request
Each pipe is clearly marked with grade, size, standard, and heat number to ensure full traceability.
Stainless Steel 317L Pipe Applications
Stainless steel 317L pipes are widely used in industries where enhanced resistance to corrosion, chlorides, and acidic media is required. The higher molybdenum content makes this grade suitable for demanding service conditions where conventional austenitic stainless steels may not provide sufficient service life.
Stainless steel 317L pipes are commonly used in:
- Chemical processing plants
- Pulp and paper bleaching systems
- Marine and offshore piping
- Heat exchangers and condensers
- Acid transfer and storage systems
- Industrial water treatment units
Stainless Steel 317L Pipe Price
Pipe Type | Size Range | Schedule | Price Basis |
Seamless SS 317L Pipe | As specified | Sch 10S – XXS | |
Welded / ERW SS 317L Pipe | As specified | As required |
SS 317L pipe price depends on size, schedule, quantity, and testing requirements. For current pricing and availability, buyers are advised to request a quotation.
Related Links
Explore additional material options and alloy families relevant to corrosion-resistant piping applications:
Why Choose Stellar Alloys for Stainless Steel 317L Pipes
Stellar Alloys is an organization that promotes procurement of stainless steel 317L pipes with the aim of meeting specifications, accuracy in documentation and coordination of delivery. Experience in the supply of corrosion resistant stainless steel piping can aid in the minimization of risk of material selection when used in chemical and process applications.
We offer regulated sourcing as per ASTM standards, inspection coordination as outlined in the requirements and packaging to facilitate export with full documentation to support it.
Frequently Asked Questions About Stainless Steel 317L Pipe
Stainless steel 317L pipe is used in applications requiring higher resistance to pitting and crevice corrosion, especially in chloride-rich and acidic environments. It is commonly used in chemical processing plants, pulp and paper bleaching systems, marine piping, heat exchangers, and acid transfer lines where standard stainless steel grades may have a shorter service life.
The main difference between SS 317L pipe and SS 316L pipe is the higher molybdenum content in 317L. This provides improved resistance to localized corrosion in aggressive chemical and chloride-containing environments. SS 316L is suitable for moderate corrosion service, while SS 317L is preferred for more severe operating conditions requiring extended service life.
Yes, stainless steel 317L pipes are commonly manufactured in accordance with ASTM A312 TP317L, which covers seamless, welded, and ERW austenitic stainless steel pipes intended for high-temperature and general corrosive service applications.
Stainless steel 317L pipes are available in both seamless and welded construction. Seamless pipes are typically selected for pressure-critical and corrosion-sensitive applications, while welded and ERW pipes are used for larger diameters and cost-effective piping systems in corrosive environments.
SS 317L pipe is designated as UNS S31703 and is also available under European equivalents such as EN 1.4438 and EN 1.4449. These equivalents allow compatibility with international specifications used in EPC and export projects.
Stainless steel 317L pipes are typically supplied with hydrostatic testing, positive material identification (PMI), dimensional inspection, and optional non-destructive testing. Mill Test Certificates are provided as per EN 10204 3.1, with third-party inspection documentation available on request for project and export requirements
The price of stainless steel 317L pipe depends on factors such as pipe size, schedule, manufacturing type (seamless or welded), quantity, testing requirements, and current raw material costs. Buyers generally request a quotation to obtain accurate pricing based on project specifications and delivery requirements.