Thaida is a reputable manufacturer and supplier located in Thailand, focusing on high-quality Stainless Steel 309 Seamless Pipes. These pipes are designed to perform exceptionally well in high-temperature and corrosive settings. Renowned for their outstanding oxidation resistance, strength, and durability, Stainless Steel 309 Seamless Pipes are perfect for heat-intensive and chemical applications. Thaida guarantees that each product adheres to international quality standards, providing precision-engineered pipes that are built for reliability and longevity. The company’s dedication to quality, innovation, and customer satisfaction has established it as a trusted name in the stainless steel sector.
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Stainless Steel 309 Seamless Pipes are primarily made of iron, containing 22–24% chromium and 12–15% nickel, which gives them remarkable resistance to oxidation and scaling, even at high temperatures. These pipes boast a tensile strength of around 620 MPa and a yield strength of 310 MPa, along with good elongation and toughness. The increased chromium and nickel content boosts their resistance to heat and corrosion while ensuring structural stability. Stainless Steel 309 maintains its mechanical properties during thermal cycling and offers excellent weldability and formability for industrial fabrication.
309 Stainless Steel Seamless Pipes Specification
| Specifications | ASTM A 312 ASME SA 312 |
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| Dimensions | ASTM, ASME and API |
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| Size | ½” to 6” NB Sch 10s, 40s, & 80s, 160s |
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| Schedule | SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
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| Type | Seamless |
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| Form | Round, Square, Rectangular, Hydraulic Etc |
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| Length | Single Random, Double Random & Cut Length |
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| End | Plain End, Beveled End, Treaded |
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Stainless Steel 309 Seamless Pipes Size Chart
| 309 SS Pipes OD (mm) | Pipes WT (mm) | in. | Sch | Kg/m |
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| 13.72 | 1.65 | 1/4 | 10S | 0.50 |
| 13.72 | 2.24 | 1/4 | 40S | 0.64 |
| 13.72 | 3.02 | 1/4 | 80S | 0.81 |
| 17.15 | 1.65 | 3/8 | 10S | 0.64 |
| 17.15 | 2.31 | 3/8 | 40S | 0.86 |
| 17.15 | 3.20 | 3/8 | 80S | 1.12 |
| 33.40 | 6.352 | 1 | 160 | 4.30 |
| 42.16 | 6.352 | 1¼ | 160 | 5.69 |
| 60.33 | 8.742 | 2 | 160 | 11.29 |
| 88.90 | 11.132 | 3 | 160 | 21.67 |
| 114.30 | 13.492 | 4 | 160 | 34.05 |
| 141.30 | 15.882 | 5 | 160 | 49.87 |
| 168.28 | 18.262 | 6 | 160 | 68.59 |
| 219.08 | 23.012 | 8 | 160 | 112.97 |
Stainless Steel 304L Seamless Pipes Chemical Composition
| Grade | C | Si | Mn | Cr | Ni | P | S | Fe |
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| 309 | ≤ 0.20 | ≤ 0.75 | ≤ 2.00 | 22.00 – 24.00 | 12.00 – 15.00 | ≤ 0.045 | ≤ 0.03 | Balance |
Stainless Steel 309 Seamless Pipes Mechanical Properties
| Properties | Metric | Imperial |
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| 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 |
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Why Choose Stainless Steel 309Seamless Pipes from Thaida?
Choosing Stainless Steel 309 Seamless Pipes from Thaida in Thailand ensures superior quality, durability, and performance. These pipes provide outstanding corrosion resistance and strength, making them ideal for demanding industrial applications. With a strong commitment to exceptional service and timely delivery, Thaida guarantees complete customer satisfaction. Backed by expertise in stainless steel products, we deliver high-grade, customized solutions designed to meet your specific requirements with precision and reliability.
Largest Stainless Steel 309 Seamless Pipes Supplier in Thailand
A leading supplier of Stainless Steel 309 Seamless Pipes, Thaida offers a wide range of high-quality pipes and tubes suitable for various industrial applications. With an extensive inventory and a strong commitment to dependable service, it has earned a reputation as a trusted provider of stainless steel solutions throughout Thailand.
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Types of Stainless Steel 309 Seamless Pipes
Are Custom Sizes Available for 309 Stainless Steel Seamless Pipes?
Yes, Thaida in Thailand provides custom sizes for Stainless Steel 309 Seamless Pipes to perfectly match your specific requirements. Our dedicated team is committed to delivering tailored piping and tubing solutions that meet your industrial needs. For more information, reach out to us at [email protected].
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These pipes are commonly used in high-temperature applications like furnaces, boilers, heat exchangers, and chemical processing equipment. They are also ideal for the petrochemical industry, thermal power plants, and exhaust systems due to their ability to withstand oxidation and scaling. Furthermore, these pipes are utilized in structural and pressure applications where heat resistance and corrosion protection are essential. Their strength, durability, and resistance to thermal stress make them a fantastic choice for demanding industrial environments that require long-term reliability.
Stainless Steel 309 Seamless Pipes Uses
