317 SS Seamless Pipes Manufacturer and Supplier in Thailand
Stainless Steel 317 Seamless Pipes is a high-alloy austenitic pipe known for its enhanced corrosion resistance, especially in acidic and chloride-rich environments. These pipes are ideal for applications that demand both strength and durability under aggressive conditions. At Thaida, we specialize in manufacturing and supplying top-grade SS 317 seamless pipes that conform to global standards like ASTM A312 and ASME SA312. Designed to perform reliably in industries such as chemical processing, oil & gas, and petrochemicals, our pipes offer superior mechanical strength and long service life. As our mother company is ISO certified and has third-party approvals, we ensure consistent product performance and customer satisfaction worldwide.
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Product overview : Stainless Steel 317 Seamless Pipes
Stainless Steel 317 Seamless Pipes is a high-performance austenitic stainless steel pipe known for its higher molybdenum content, which enhances its resistance to pitting, crevice corrosion and chemical attacks. This makes it a reliable choice for harsh and corrosive environments. These DIN 1.4449 pipes offer long service life, reduced maintenance needs and reliable performance under high temperature and pressure conditions. This pipe is available in a variety of surface finishes such as pickled, annealed, polished and bright annealed, based on customer needs and applications.For structural use or process piping, these UNS S31700 pipe features improved mechanical strength compared to conventional grades.
Key Features of 317 Stainless Steel Seamless Pipes
The key benefits of Stainless Steel 317 Seamless Pipes include strength, corrosion resistance, high molybdenum content, and thermal efficiency.
High Molybdenum Content
Exceptional Corrosion Resistance
These pipes withstand chemical attacks from acids like sulfuric, acetic and tartaric, extending service life in harsh settings.
Excellent Strength and Durability
AISI SS TP 317 pipes performs reliably under mechanical stress and aggressive service conditions without compromising structural integrity.
Seamless Construction
High-Temperature Performance
Good Formability and Weldability
Versatile Size and Standard Options
Available in multiple diameters, wall thicknesses and standards including ASTM A312 and ASTM A269.
Why Choose Thaida For Stainless Steel 317 Seamless Pipes
With its expertise and strong reputation, Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd. is a trusted choice for Stainless Steel 317 seamless pipes. Committed to quality and customer satisfaction, we ensure top-tier products that meet global standards. With on-time delivery, custom solutions and dedicated customer support, makes us a leading supplier in the market.
Global Exports Expertise
Comprehensive Product Testing
Direct Manufacturer
Custom Sizes & Finishes
In-House Testing & Full Traceability
Large Inventory & Fast Dispatch
Industry Certifications & Compliance
After-Sales Support, Service- Technical Support
Specification Of Stainless Steel 317 Seamless Pipes
This table provides detailed specifications for SS UNS S31700 seamless pipes, including size range, outer diameter, thickness, schedules and surface finishes.
| Standard: | ASTM A312, A312 / ASME SA312, SA312 |
|---|---|
| Outside Diameter: | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Thickness: | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type: | Seamless |
| Form: | Round, Square, Rectangular, Oval, Hydraulic Etc |
| Length: | Single Random, Double Random & Required Length |
| End: | Plain End, Beveled End, Treaded |
| Outside Finish: | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Pipes, Finish as per customer Requirements |
UNS S31700 Seamless Piping Chemical Composition Chart
| Grade | C | Ni | Si | N | S | Mn | P | Cr | Mo | |
|---|---|---|---|---|---|---|---|---|---|---|
| SS 317 | min. | – | 11.0 | – | – | – | – | – | 18.0 | 3.00 |
| max. | 0.008 | 14.0 | 1.00 | – | 0.03 | 2.00 | 0.040 | 20.0 | 4.00 | |
Mechanical Properties of Stainless Steel DIN 1.4449 Seamless Pipes
| Grade | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| SS 317 | 515 | 35 | 205 | 95 | 217 |
Physical Properties of 317 Stainless Steel Seamless Pipes
|
Physical Properties (Room Temperature)
|
||
|---|---|---|
|
Specific Heat (0-100°C)
|
500
|
J.kg-1.°K-1
|
|
Thermal Conductivity
|
14.6
|
W.m -1.°K-1
|
|
Thermal Expansion
|
16.5
|
mm/m/°C
|
|
Modulus Elasticity
|
193
|
GPa
|
|
Electrical Resistivity
|
7.4
|
μohm/cm
|
|
Density
|
7.99
|
g/cm3
|
Stainless Steel 317 Seamless Pipes Manufacturing Process
Manufacturing stainless steel 317 pipes follows a structured five-step process which is as follows
1. Raw Material SELECTION
High-quality stainless steel billets and strips are carefully selected for superior strength and corrosion resistance.
2. Pipes Formation
The selected raw material is formed into pipes using seamless extrusion methods, depending on the application.
3. Heat Treatment
Pipes undergo required controlled heat treatment to enhance mechanical properties and relieve internal stresses.
4. Cold Working and Finishing
After heat treatment, pipes are cold-worked for better surface finish, dimensional accuracy and improved strength.
5. Quality Control and Testing
Every pipe is thoroughly inspected and tested to ensure it meets international quality standards for performance and reliability.
Specific Applications of Stainless Steel 317 Seamless Pipes
Stainless Steel 317 Seamless Pipes are primarily used in the chemical processing industry for handling corrosive and high-temperature fluids. These pipes are commonly installed in heat exchangers, evaporators, and processing lines due to their excellent resistance to sulfuric acid and chlorinated solvents. Apart from chemical plants, they are also utilized in pulp and paper industries, food processing units, and marine environments where both corrosion resistance and structural durability are critical.
Oil and Gas Industry
Chemical and Petrochemical Industry
Food and Beverage Industry
Pharmaceutical & Biotechnology
Automotive and Transportation
Aerospace & Defense
Construction and Architecture
Marine & Shipbuilding
Power Generation & Heat Exchange
FAQ's
Which industries commonly use Stainless Steel 317 Seamless Pipes?
Industries that commonly use Stainless Steel 317 Seamless Pipes include the chemical, petrochemical, and oil and gas sectors due to their excellent corrosion resistance. It is also widely used in power generation, pulp and paper manufacturing, and the pharmaceutical industry for its high strength and ability to perform in corrosive and high-temperature environments. Other sectors that often use these pipes are food processing, desalination plants, and offshore drilling.
How do Stainless Steel 317 Seamless Pipes differ from 316 pipes?
SS 317 seamless pipes have a higher Molybdenum content (3-4%) than SS 316 pipes (2-3%), which gives the 317 grade superior resistance to pitting and crevice corrosion in aggressive, chloride-heavy environments. This makes SS 317 a premium upgrade over SS 316, especially for applications requiring greater strength at high temperatures.
Can I get custom sizes in Stainless Steel 317 Seamless Pipes?
Yes, you can get custom sizes for Stainless Steel 317 Seamless Pipes from many suppliers. These suppliers can provide pipes in custom lengths, shapes, and dimensions to meet specific requirements.
Can Stainless Steel 317 Seamless Pipes be welded easily?
Yes, Stainless Steel 317L seamless pipe is highly weldable by all standard fusion methods. The ‘L’ designation means it has a low carbon content, which specifically makes it resistant to sensitization (intergranular corrosion) during welding, eliminating the need for post-weld heat treatment.
What is 317 stainless steel used for?
317 stainless steel is an austenitic alloy known for its excellent corrosion resistance, especially in acidic and chloride-rich environments. It offers high strength, good weldability, and durability, making it ideal for use in chemical processing, pulp and paper, textile, and food industries where exposure to harsh chemicals and moisture is common.
What is the difference between 317 and 316 stainless steel?
The main difference between 317 and 316 stainless steel is their molybdenum content. 317 contains more molybdenum, which enhances its resistance to pitting, crevice corrosion, and chemical attack. As a result, 317 performs better than 316 in highly corrosive or chloride rich environments, while 316 remains more cost effective for general corrosion resistance.
What is 317L stainless steel?
317L stainless steel is a low-carbon version of 317 stainless steel, offering excellent resistance to corrosion and oxidation in harsh chemical environments. The reduced carbon content minimizes carbide precipitation during welding, maintaining its strength and corrosion resistance even after exposure to high temperatures.
What is the composition of 317 stainless steel?
317 stainless steel is an alloy consisting primarily of iron, with chromium (18-20%), nickel (11-15%), and molybdenum (3-4%) being the main alloying elements. It also contains smaller amounts of manganese, silicon, carbon, phosphorus, sulfur, and nitrogen.