309 SS Seamless Tubes Manufacturer and Supplier in Thailand
Stainless Steel 309 Seamless Tubes are high-performance tubing solutions designed for superior heat and corrosion resistance in demanding environments. Thaida Stainless Steel Manufacturing (Thailand) Co., Ltd., a leading 309 stainless steel seamless tube manufacturer in Chon Buri, Thailand, offers top-grade tubing engineered to perform in high-temperature and corrosive applications. With years of pipe manufacturing experience, we have become a trusted name in the industry, delivering precision-engineered seamless tubes across various grades, sizes, and surface finishes. Our manufacturing facility in Chon Buri specialises in custom-cut-to-length tubes and bulk supply services, ensuring flexibility and reliability for every project. As a reliable ss 309 seamless tube supplier in Chon Buri, we focus on quality, consistency, and customer satisfaction.
Other Related Products
Product Overview: Stainless Steel 309 Seamless Tubes
Stainless steel 309 seamless tube, also known as AISI 309 pipe, is a high-performance alloy that contains higher percentages of nickel and chromium compared to other stainless steels. This unique composition provides excellent corrosion resistance and makes it ideal for high-temperature environments, where it can handle the stress and oxidation found in extreme conditions. Stainless steel 309 tubing is commonly used in industries like aerospace, chemical processing, and furnace applications. Compared to grade 304, which has lower nickel and chromium content, stainless steel 309 offers better performance in high-temperature applications due to its enhanced resistance to oxidation and corrosion. Standards such as ASTM A213 ensure the quality and reliability of this material, making it a trusted choice for critical applications.
Key Features and Benefits of Stainless Steel 309 Seamless Tubing
Below are some key features and benefits of stainless steel 309 seamless tubing:
High Temperature Resistance
Stainless steel 309 can withstand extremely high temperatures, making it ideal for use in high-heat environments. Its ability to resist thermal expansion and maintain structural integrity at elevated temperatures sets it apart from other materials.
Superior Corrosion and Oxidation Resistance
The higher levels of nickel and chromium in stainless steel 309 enhance its ability to resist both corrosion and oxidation, even in harsh environments. This makes it a preferred choice for industries exposed to aggressive chemicals and high humidity.
Good Strength and Toughness
Stainless steel 309 combines both strength and toughness, allowing it to maintain its durability under stress, pressure, and high temperatures. This ensures the material performs reliably over time in demanding applications.
Non-Magnetic (As Annealed)
When annealed, stainless steel 309 becomes non-magnetic, which is advantageous in applications requiring minimal magnetic interference, such as in electronic or medical equipment.
Resistance to Atmospheric and Chemical Corrosion
Good Weldability and Fabrication Ease
Stainless steel 309 is known for its excellent weldability, making it easier to fabricate into various shapes and sizes. This property ensures that it can be used in diverse applications, from custom-made parts to large-scale manufacturing processes.
Why Choose Our Stainless Steel 309 Seamless Tubes
Thaida is a leading manufacturer and supplier of high-quality stainless steel 309 seamless tubes, known for their exceptional durability and performance in high-temperature environments. With a focus on precision and reliability, we offer a wide range of custom solutions to meet the specific needs of our clients across various industries. Our stainless steel 309 tubes are crafted to the highest industry standards, ensuring superior corrosion and oxidation resistance, strength, and toughness. We pride ourselves on delivering timely, cost-effective solutions, backed by expert support and guidance every step of the way. Trust us for all your stainless steel 309 seamless tube requirements!
Competitive Pricing
Global Exports Expertise
Large Inventory & Fast Dispatch
Custom Sizes & Finishes
Industry Certifications & Compliance
Advanced Production Technology
After-Sales Support, Service- Technical Support
In-House Testing & Full Traceability
309 Stainless Steel Seamless Tubes Specification
The 309 Stainless Steel Seamless Tubes specifications table includes dimensions, standards, tolerances, and mechanical properties for industrial applications.
| Standard Specifiaction | 309 Stainless Steel Tubes |
|---|---|
| Seamless Tubes Sizes | 1/2 upto 8 inch Nominal Bore |
| Wall Thickness (WT) | Schedule 5S to XXS |
| Processing | Polishing, Polished Grit 120 to 600, Cut-to-length |
| Length | Single Random, Double Random, Cut Length |
| End | Plain End, Beveled End, Treaded |
| Materials Testing | CRYO SERVICE, H2 SERVICE, OXYGEN SERVICE, NACE MR0175 |
Equivalent Grades of Stainless 309 Seamless Tubes
309 stainless steel seamless tubes equivalent grades table lists international standards like UNS, WNR, EN, JIS, and DIN.
| Grade | DIN | EN | ASTM | UNS |
|---|---|---|---|---|
| SS 309 | 1.4828 | X15CrnIsI20-12 | ASTM 213 | S30900 |
Chemical Composition of 309 Stainless Steel Seamless Tubes
This chemical composition chart of 309 Stainless Steel Seamless Tubes outlines key elements like Cr, Ni, and C content.
| Grade | C | Si | Mn | Cr | Ni | P | S | Fe |
|---|---|---|---|---|---|---|---|---|
| 309 | ≤0.20 | ≤0.75 | ≤2.00 | 22.00–24.00 | 12.00–15.00 | ≤0.045 | ≤0.03 | Balance |
Mechanical Properties of 309 Stainless Steel Seamless Tubes
This table of mechanical properties for 309 Stainless Steel Tubes outlines tensile strength, yield strength, elongation, and hardness values.
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 620 MPa | 89900 psi |
| Yield strength (@ strain 0.200%) | 310 MPa | 45000 psi |
| Izod impact | 120 – 165 J | 88.5 – 122 ft-lb |
| Shear modulus (typical for steel) | 77 GPa | 11200 ksi |
| Elastic modulus | 200 GPa | 29008 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 45% | 45% |
| Hardness, Brinell | 147 | 147 |
| Hardness, Rockwell B | 85 | 85 |
| Hardness, Vickers (converted from Rockwell B hardness) | 169 | 169 |
Thermal Properties of ASTM A213 TP309 Seamless Tubes
Explore thermal properties of ASTM A213 TP309 Seamless Tubes, including coefficient of expansion and conductivity values.
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@ 0-100°C/32-212°F) | 14.9 µm/m°C | 8.28 µin/in°F |
| Thermal conductivity (@ 0-100°C/32-212°F) | 15.6 W/mK | 108 BTU in/hr.ft².°F |
Physical Properties of 309 Stainless Steel Seamless Tubes
This table shows the physical properties of 309 Stainless Steel Tubes, including melting point and elastic modulus.
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8 g/cm3 | 0.289 lb/in³ |
| Melting point | 1455°C | 2650°F |
Stainless Steel 309 Seamless Tubes Manufacturing Process
There are 5 steps involved in the stainless steel 309 seamless tube manufacturing process, which are given below. Every step of production is precisely controlled to comply with stringent 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, tubes 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.
Applications of Stainless 309 Seamless Tubing
Stainless steel pipes are the best and most reliable when working in any of the areas, such as high-temperature industrial processing, especially in the heat treatment and furnace industry, which is the leading sector for 309 stainless steel seamless tubes. These tubes are extensively used in furnace components, heat exchangers, and kilns due to their excellent oxidation resistance and strength at elevated temperatures. In thermal processing plants, they maintain structural integrity under extreme heat, making them ideal for radiant tubes, combustion chambers, and burner assemblies. They are used in power plants and refineries wherever consistent performance at high temperatures is critical.
Oil and Gas Industry
Chemical and Petrochemical Industry
Food and Beverage Industry
Pharmaceutical & Biotechnology
Aerospace & Defense
Power Generation & Heat Exchange
Construction and Architecture
Marine & Shipbuilding
Automotive and Transportation
FAQ's
Can Stainless Steel 309 Seamless Tubes withstand high-pressure industrial conditions?
Can Stainless Steel 309 Seamless Tubes withstand high-pressure industrial conditions?
Yes, Stainless Steel 309 Seamless Tubes can withstand high-pressure conditions due to their seamless construction, which eliminates weak points and ensures consistent strength. With high tensile strength, excellent durability, and strong resistance to heat and corrosion, these tubes maintain their structural integrity even under extreme mechanical stress, ensuring long-term reliability in demanding environments.
Are Stainless Steel 309 Seamless Tubes available in different wall thicknesses?
Are Stainless Steel 309 Seamless Tubes available in different wall thicknesses?
Yes, Stainless Steel 309 Seamless Tubes are available in a wide range of wall thicknesses, typically specified by schedules from SCH 5S to XXS, including common options like SCH 40 and SCH 80. It can also be customized in thickness and size to meet specific project requirements. Manufactured to standards such as ASTM, ASME, and API, these tubes are offered in various lengths and end finishes for greater flexibility in application.
Can Thaida supply customized Stainless Steel 309 Seamless Tubes?
Can Thaida supply customized Stainless Steel 309 Seamless Tubes?
Yes, Thaida can supply customized Stainless Steel 309 Seamless Tubes based on specific project requirements. We offer flexibility in dimensions, wall thickness, length, and end finishes to meet diverse industrial needs while ensuring compliance with international standards like ASTM and ASME for consistent quality and performance.
Which industries most use Stainless Steel 309 Seamless Tubes?
Which industries most use Stainless Steel 309 Seamless Tubes?
Stainless Steel 309 Seamless Tubes are used in industries that require high-temperature strength and excellent resistance to oxidation and corrosion. Key sectors include the petrochemical, oil and gas, chemical, power generation, aerospace, thermal processing, automotive, food processing, pharmaceutical, marine, and construction industries.
What is 309 stainless steel tube used for?
What is 309 stainless steel tube used for?
Stainless Steel 309 Tubes are widely used for their high-temperature strength and corrosion resistance in demanding environments. It is commonly applied in furnace parts, heat exchangers, radiant tubes, kilns, and boiler tubes, as well as in the petrochemical, chemical processing, power generation, and automotive industries, where materials must withstand extreme heat, pressure, and corrosive gases.
What is the difference between 309 and 316 stainless steel tube?
What is the difference between 309 and 316 stainless steel tube?
Stainless steel is valued for its strength, durability, and corrosion resistance, with grades 309 and 316 being among the most commonly used. Stainless Steel 309 offers excellent oxidation resistance and high-temperature strength, making it suitable for industrial and thermal applications. In contrast, Stainless Steel 316, which contains molybdenum, provides superior corrosion resistance, especially in marine or chemical environments. While 309 performs better under high stress and temperature, 316 is easier to weld and machine but generally more expensive. Choosing between them depends on the application’s temperature, corrosion exposure, and cost requirements.
What is the maximum temperature for 309 stainless steel tube?
What is the maximum temperature for 309 stainless steel tube?
The maximum continuous service temperature for Stainless Steel 309 tubes is up to 2000°F (1093°C), making them ideal for sustained high-temperature use. They offer excellent oxidation resistance up to 1900°F (1038°C) under non-cyclic conditions and around 1850°F (1010°C) during frequent thermal cycling. This combination of heat resistance and strength ensures reliable performance in demanding high-temperature environments.
What is the composition of 309 stainless steel tube?
What is the composition of 309 stainless steel tube?
Stainless Steel 309 is primarily composed of iron (about 60%), chromium (22.0–24.0%), and nickel (12.0–15.0%), giving it excellent strength and oxidation resistance at high temperatures. It also contains small amounts of manganese (2.0%), silicon (1.5–2.0%), carbon (up to 0.20%), phosphorus (0.045% max), sulfur (0.030% max), and nitrogen (0.11%), which together enhance its mechanical and corrosion-resistant properties.