What is 317L stainless steel tube?

A 317L stainless steel tube is a hollow product made from an austenitic stainless steel alloy. The 'L' signifies a low carbon content, which minimizes carbide precipitation during welding. This characteristic allows the tube to maintain its corrosion resistance after joining. It is an enhanced version of 316L, offering greater performance in corrosive environments.

What is the density of 317L tube?

The density of a 317L tube is generally consistent with most austenitic stainless steels. Its density is approximately 8.0 g/cm³ (or 0.289 lb/in³). This value is important for calculating the overall weight of a system and for structural engineering considerations.

Stainless Steel 317L Seamless Tubes

Q: What is the difference between 316L and 317L stainless steel tube?

The main difference lies in the chemical composition, specifically the molybdenum content. 317L stainless steel contains a higher percentage of molybdenum (typically 3.0-4.0%) than 316L (typically 2.0-3.0%). This increased molybdenum gives 317L superior resistance to pitting and crevice corrosion, especially in sulfuric acid and chloride-bearing environments.

Stainless Steel 317L Seamless Tubes is a premium-grade, low-carbon, molybdenum-alloyed austenitic tube designed for superior corrosion resistance in aggressive environments. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., based in Chon Buri, is a trusted UNS S31703 stainless steel seamless tube supplier, specialising in high-quality tubes for diverse industrial needs. With years of stainless steel tubes manufacturing experience, we offer these tube in a wide range of sizes and grades, providing custom cut-to-length services and bulk supply options. Our seamless 317L tube are precisely engineered to deliver excellent strength, weldability, and durability, making them ideal for applications in chemical processing, marine, and petrochemical sectors.

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Overview of Stainless Steel 317L Seamless Tubes

Stainless steel 317L seamless tubes are low-carbon tubes designed for applications where durability and resistance to harsh environments are critical. SS UNS S31703 seamless tubing is enriched with high molybdenum content, offers superior pitting resistance and enhanced chemical resistance. This makes it ideal for use in aggressive environments. It is resistant to chemicals, acids, and high temperatures, ensuring reliability in demanding conditions. The 1.4438 alloy tube is used in chemical processing, marine, food, and pharmaceuticals, where corrosion and strength performance are vital. These tubes meet ASTM A312, ASTM A213, and ASTM A269 standards and specifications. Whether used in corrosive environments or high-temperature applications, the ss 317L seamless tube ensures long-lasting, dependable performance.

Top Benefits of 317L Stainless Steel Seamless Tubes

317L Stainless Steel Seamless Tubes top benefits are mentioned below, explaining their exceptional corrosion resistance, strength, and durability for demanding industrial applications.

These tubes provide exceptional durability, ensuring long service life even in extreme conditions, which reduces the need for frequent replacements.

With superior corrosion resistance, especially against chlorides and harsh chemicals, 317L tubes are ideal for use in harsh industrial environments.

Designed to withstand high-pressure environments, 317L seamless tubes maintain their structural integrity under intense stress, making them reliable in demanding applications.

Their inherent strength allows 317L tubes to resist mechanical stresses without deforming, ensuring it perform under heavy loads and tough conditions.

These tubes offer excellent flexibility, enabling easy handling and installation, making them versatile in various construction and manufacturing processes.

The seamless design ensures there are no weak points, creating a leak-proof solution ideal for transporting fluids and gases safely.

317L seamless tubes exhibit outstanding heat resistance, retaining their properties at high temperatures, which makes them suitable for high-temperature applications.

The low carbon content in 317L stainless steel prevents carbide precipitation, enhancing its resistance to intergranular corrosion, even in high-temperature environments.

Being non-magnetic, 317L ss is ideal for applications where magnetic interference must be avoided, ensuring stable operation in sensitive environments.

The tubes have a smooth surface finish, enhancing their resistance and making them easy to clean, which is especially important in sanitary applications.

317L stainless steel seamless tubes comply with ASTM A213 standards, ensuring superior quality and performance in high-pressure, heat-resistant applications.

Why Choose Thaida for 317L Stainless Steel Seamless Tubes?

Thaida is a leading stainless steel 317L tube manufacturer, providing high-quality tubing known for its superior corrosion resistance, durability, and performance in demanding environments. While the ISO certification is held by our mother company, we strictly meet to these international standards along with ASTM and ASME certifications, ensuring reliability and top-tier quality. Trusted by numerous industries, we have built strong partnerships and received positive testimonials from major clients. We offer a comprehensive range of solutions, with SS 317L Seamless Tubes as one of our key offerings, ensuring you get the best in strength, reliability, and performance.

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Grade and Specifications of 317L Stainless Steel Seamless Tubes

317L Stainless Steel Seamless Tubes grades and specifications are detailed in the table below to guide you in selecting the ideal product for your needs.

Specifications	ASTM A213 / ASTM SA213
Tube Range	6.35 mm OD to 101.6 mm OD, Gauge: 25 SWG - 10 SWG
Outer Diameter	3.00 mm - 219.10 mm
Wall Thickness	0.40 mm - 12.70 mm
Schedules	5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH
Length	Up to 30 meters, Custom Cut Lengths
Types	Round, Square, Rectangle, Coil, "U" Shape, Hydraulic & Honed Tubes

Chemical Composition of ASTM A269 TP 317L Stainless Steel Seamless Tubes

Chemical composition of 317L Stainless Steel Seamless Tubes is provided below to ensure clarity on the alloy’s elemental composition and quality standards.

C	Si	Mn	P	S	Cr	Mo	Ni
≤0.035	≤0.075	≤2.00	≤0.04	≤0.03	18.00-20.00	3.00-4.00	11.00-15.00

Mechanical Properties of 317L Stainless Steel Seamless Tubes

Mechanical properties such as tensile strength, yield strength, elongation, and hardness are provided for a clear understanding.

Unit	Tensile Strength	Yield Strength	Modulus of Elasticity	Poisson's Ratio	Elongation at Break (in 50 mm)	Hardness, Rockwell B
Metric	595 MPa	260 MPa	200 GPa	0.27-0.30	55%	85
Imperial	86300 psi	37700 psi	29000 ksi	0.27-0.30	55%	85

Stainless Steel 317L Seamless Tubes Physical Properties

Physical properties like density, specific heat, thermal conductivity, and electrical resistivity are given to help make informed choices.

Specific Heat (0–100 °C)	Thermal Conductivity	Thermal Expansion	Modulus Elasticity	Electrical Resistivity	Density
500	14.6	16.5	193	7.4	7.99
J.kg⁻¹.°K⁻¹	W.m⁻¹.°K⁻¹	mm/m/°C	GPa	μΩ·cm	g/cm³

ASTM A269 TP 317L Stainless Steel Seamless Tubes Available Size

317L stainless steel seamless tubes are available in a wide range of sizes to meet diverse industrial requirements, as detailed below.

NB SIZES	SCH 5	SCH 10	SCH 40	SCH 80	SCH 160
1/8″	√	√	√	√	√
1/4″	√	√	√	√	√
3/8″	√	√	√	√	√
1/2″	√	√	√	√	√
3/4″	√	√	√	√	√
1″	√	√	√	√	√
1 1/4″	√	√	√	√	√
1 1/2″	√	√	√	√	√
2″	√	√	√	√	√
2 1/2″	√	√	√	√	√
3″	√	√	√	√	√
4″	√	√	√	√	√
5″	√	√	√	√	√
6″	√	√	√	√	√

Manufacturing Process of Stainless Steel 317L Seamless Tubes

The manufacturing of stainless steel 317L seamless tube follows a five-step process, ensuring compliance with industry standards.

1. Raw Material Selection
High-quality stainless steel billets and strips are carefully selected for superior strength and corrosion resistance.

2. Tubes Formation
The selected raw material is formed into tubes using seamless extrusion methods, depending on the application.

3. Heat Treatment
Tubes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.

4. Cold Working and Finishing
After heat treatment, tube are cold-worked for better surface finish, dimensional accuracy and improved strength.

5. Quality Control and Testing
Every tube is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.

Industrial Applications of Stainless Steel 317L Seamless Tubes

Stainless steel seamless 317L tubes are widely used in the chemical processing industry, which represents the highest demand sector for these tubes. They are essential in handling corrosive chemicals and acids in reactors, heat exchangers, and piping systems. They find extensive use in marine environments for equipment exposed to seawater, thanks to their excellent resistance to chloride-induced corrosion. The petrochemical industry also relies on these tubes for high-temperature and high-pressure applications, while food and pharmaceutical sectors use them for hygienic and contamination-free fluid transfer.

Oil and Gas Industry

Chemical and Petrochemical Industry

Food and Beverage Industry

Pharmaceutical & Biotechnology

Aerospace & Defense

Automotive and Transportation

Construction and Architecture

Marine & Shipbuilding

Power Generation & Heat Exchange

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FAQ's

How does Stainless Steel 317L Seamless Pipes differ from 317 or 316L?

Stainless Steel 317L pipes differ from 317 and 316L due to higher levels of chromium, nickel, and molybdenum, which give them superior corrosion resistance, especially against acidic conditions and chlorides. While 316L is suitable for many environments, 317L is designed for more aggressive conditions like those found in chemical plants, pulp mills, and power plant condensers. The “L” in 317L and 316L indicates a low-carbon content for improved weldability, and 317L has better high-temperature strength than 316L.

What manufacturing processes are used for Stainless Steel 317L Seamless Pipes?

The Stainless Steel 317L Seamless Pipes manufacturing process begins by piercing a solid steel billet to form a hollow shell, which is then elongated and shaped using methods like the Mannesmann plug mill or mandrel mill. The pipe undergoes rolling and drawing to achieve the desired dimensions, followed by heat treatment, straightening, and testing to ensure quality and compliance with standards.

Can customized Stainless Steel 317L Seamless Pipes with special tolerances or specifications?

Yes, customized Stainless Steel 317L seamless pipes can be manufactured with special tolerances and specifications. Suppliers offer custom sizes, lengths, and finishes to meet unique and demanding project requirements.

What is the difference between 316L and 317L Stainless Steel?

317L stainless steel is a low-carbon austenitic chromium-nickel-molybdenum alloy known for its superior corrosion resistance, especially against chlorides and other harsh chemicals. The addition of molybdenum enhances its resistance to pitting and crevice corrosion. Its low carbon content minimizes carbide precipitation during welding, making it ideal for chemical processing, marine, and pollution control applications.

What is 317L stainless steel?

What is the density of 317L?

The density of 317L stainless steel is approximately 8.0 g/cm³ or 8000 kg/m³. This is the most common value cited for this material. Some sources may list a slightly different value, such as 7.99 kg/m^3, but 8.0 g/cm^3 is the widely accepted density.

What is the difference between 317 and 317L?

317L stainless steel is the low-carbon version of 317, offering similar strength and corrosion resistance but with improved weldability and resistance to intergranular corrosion. The reduced carbon content in 317L (≤0.03%) prevents carbide precipitation during welding, making it ideal for welded components exposed to harsh environments.