Thaida Pipes and Tubes is a leading manufacturer and supplier of Stainless Steel 321H Seamless Tubes based in Bangkok, Thailand. Renowned for superior quality and precision engineering, Thaida delivers durable and corrosion-resistant tubing solutions designed to meet global industrial standards. With advanced manufacturing facilities and a skilled technical team, the company ensures exceptional performance, reliability, and customer satisfaction. Serving diverse industries such as petrochemical, power generation, and construction, Thaida Pipes and Tubes stands as a trusted name in stainless steel tubing, offering timely delivery and competitive pricing across domestic and international markets.
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Stainless Steel 321H Seamless Tubes are high-temperature resistant alloys containing chromium (17–19%), nickel (9–12%), and titanium (0.5–1%) for enhanced stability against carbide precipitation. With added carbon (0.04–0.10%), they offer superior strength at elevated temperatures compared to SS 321. These tubes exhibit excellent creep resistance, good tensile strength, and remarkable oxidation resistance up to 900°C. They maintain toughness and corrosion resistance in acidic and oxidizing environments, making them ideal for heat exchangers, refinery equipment, and high-temperature chemical processing applications.
Stainless Steel 321H Seamless Tubes Specifications
Tube Range : 6.35 mm OD To 101.6 mm OD Guage: 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 : Upto 30 meters, Custom Cut Lengths
Specifications : ASTM A213 / ASTM SA213
Types : Round, Square, Rectangle, Coil, “U” Shape, Hydraulic & Honed Tubes
Stainless Steel 321H Seamless Tubes Equivalent
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN |
|---|
| SS 321 | 1.4541 | S32100 | SUS 321 | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | X12CrNiTi18-9 |
Stainless Steel 321H Seamless Tubes Chemical Composition
| SS | 321 | 321H |
| Ni | 09 – 12 | 09 – 12 |
| N | 0.10 | 0.10 |
| Cr | 17 – 19 | 17 – 19 |
| C | 0.08 max | 0.04 – 0.08 |
| Si | 1 max | 0.75 max |
| Mn | 2 max | 2 max |
| P | 0.040 max | 0.045 max |
| S | 0.030 max | 0.03 max |
| TI | 4(C+N) | 0.70 max |
Stainless Steel 321H Seamless Tubes Mechanical Properties
| Grade | Density (kg/m3) | Thermal Conductivity (W/m.K) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Elastic Modulus (GPa) | Elec Resistivity (nΩ.m) | Specific Heat 0-100°C (J/kg.K) |
|---|
| At 100°C | At 500°C | 0-100°C | 0-315°C | 0-538°C |
|---|
| 321 | 8027 | 16.1 | 22.2 | 16.6 | 17.2 | 18.6 | 193 | 720 | 500 |
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Stainless Steel 321H Seamless Tubes Physical Properties
| Grade | Density (kg/m3) | Thermal Conductivity (W/m.K) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Elastic Modulus (GPa) | Elec Resistivity (nΩ.m) | Specific Heat 0-100°C (J/kg.K) |
|---|
| At 100°C | At 500°C | 0-100°C | 0-315°C | 0-538°C |
|---|
| 321 | 8027 | 16.1 | 22.2 | 16.6 | 17.2 | 18.6 | 193 | 720 | 500 |
Why Choose Stainless Steel 321H Seamless Tubes from Thaida?
Choosing Stainless Steel 321H Seamless Tubes 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 321H Seamless Tubes Supplier in Thailand
A leading supplier of Stainless Steel 321H Seamless Tubes, 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 321H Seamless Tubes
Are Custom Sizes Available for Stainless Steel 321H Seamless Tubes?
Yes, Thaida in Thailand provides custom sizes for Stainless Steel 321H Seamless Tubes 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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Stainless Steel 321H Seamless Tubes Uses
Because of their exceptional strength, stability, and resistance to oxidation, stainless steel 321H seamless tubes are frequently utilized in corrosive and high-temperature settings. They are frequently used in boilers, condensers, superheaters, heat exchangers, and furnace components. The tubes are perfect for use in the oil and gas, petrochemical, chemical, and power generation sectors. They are appropriate for high-pressure applications due to their exceptional creep resistance. They are also employed in exhaust systems, thermal processing equipment, and aerospace components, where long service life and dependable performance depend on their ability to withstand intergranular corrosion and scaling at high temperatures.
