Chanchai Stainless, located in Bangkok, Thailand, is a top manufacturer and supplier of high-quality stainless steel products, such as Stainless Steel 309S tubing. It has excellent high-temperature strength and oxidation resistance, making it suitable for extreme thermal and industrial applications. Chanchai Stainless offers Stainless Steel 309S tubing in sizes, wall thicknesses, and finishes to suit the varied demands of industries like heat treatment, petrochemical, power generation, and furnace construction. Committed to quality, accuracy, and timely delivery, Chanchai Stainless is a reliable supplier throughout Thailand and Southeast Asia.
Stainless Steel 309S tubing contains about 22–24% chromium and 12–15% nickel with low carbon content to improve weldability and suppress carbide precipitation. It possesses high tensile strength of about 515 MPa and retains structural integrity at temperatures up to 1000°C. The alloy exhibits excellent oxidation resistance, moderate corrosion resistance, and thermal fatigue resistance. Its low carbon content makes it ideal for welded applications with assurance of stable performance at high-temperature operations.
| Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Outer Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Form | Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded. |
| ELEMENT | SS 309S |
| NI | 12.0 – 15.0 |
| C | 0.08 max |
| MN | 2.0 max |
| P | 0.045 max |
| S | 0.030 max |
| SI | 1.0 max |
| CR | 22.0 – 24.0 |
| MO | 0.75 max |
| Condition & Grade | Tensile Strength | Yeild Strength | Elognation | Hardness |
|---|---|---|---|---|
| SS 309S | 75 (515) | 30 (205) | 35 | 90 HRB max |
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We ensures the highest quality stainless steel 309S tubing through rigorous testing procedures including mechanical, chemical and theoretical testing. Compliance with international standards is demonstrated by industry-standard documentation, such as material test certificates (MTCs). These certifications attest to the durability, strength and performance of the pipe.
Stainless Steel 309s Seamless Tubing is known for its high resistance to oxidation and excellent mechanical properties. It typically comes in diameters ranging from 1/8 inch to 12 inches, with wall thicknesses of 0.5 mm to 10 mm. It offers superior corrosion resistance in high-temperature applications.
Stainless Steel 309s Welded Tubing is ideal for applications requiring good oxidation resistance and strength. It is available in sizes from 1/4 inch to 10 inches in diameter and wall thicknesses from 0.5 mm to 8 mm. This tubing is well-suited for high-temperature environments due to its excellent corrosion resistance.
Stainless Steel 309s Heat Exchanger Tube is designed to handle extreme temperatures and corrosive environments. Common sizes range from 1/2 inch to 3 inches in diameter, with wall thicknesses of 1 mm to 5 mm. It provides excellent thermal conductivity and resistance to oxidation.
Stainless Steel 309s Instrumentation Tubing is used for precise measurement and control applications. It is available in sizes from 1/8 inch to 2 inches in diameter and wall thicknesses from 0.5 mm to 3 mm. This tubing offers strong resistance to high temperatures and corrosive environments.
Stainless Steel 309s Boiler Tubes are engineered for use in high-pressure and high-temperature environments within boilers. Typical sizes are from 1/2 inch to 4 inches in diameter, with wall thicknesses of 1 mm to 8 mm. They exhibit excellent resistance to thermal cycling and oxidation.
Stainless Steel 309s U-Tubes are used in heat exchangers and other applications requiring bending and high thermal resistance. Sizes generally range from 1/2 inch to 2 inches in diameter. They are highly resistant to thermal stress and corrosion.
Stainless Steel 309s Condenser Tube is designed for use in condenser systems where high heat resistance is critical. It comes in sizes from 1/2 inch to 3 inches in diameter and wall thicknesses from 0.5 mm to 4 mm. It provides excellent durability and resistance to corrosion and heat.
Stainless Steel 309s Fin Tubes are used in applications where enhanced heat transfer is needed, such as in heat exchangers and radiators. Typical sizes are from 1/2 inch to 2 inches in diameter, with various fin lengths and thicknesses. They offer good resistance to oxidation and high temperatures.
Stainless Steel 309S tubing finds common application in high-temperature industrial operations where resistance to corrosion and heat stability is of prime importance. Common applications are radiant tubes, furnace burners, heat exchangers, exhaust systems, and other components subject to severe heat. It is also used in petrochemical plants and power plants where materials have to endure scaling and oxidation for long service lifetimes. Due to its strength, toughness, and thermal conductivity, 309S tubing is a system of choice when long-term reliability in aggressive operating conditions is required.
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