Lecong Stainless, a reputable manufacturer and supplier located in Da Nang, Vietnam, focuses on producing top-notch Stainless Steel 321H Tubing, specifically designed for tough industrial applications. With a strong reputation for precision manufacturing and a commitment to international standards, this company caters to various sectors, including chemical processing, power generation, and aerospace. The tubing is crafted for outstanding durability, resistance to corrosion, and thermal stability, ensuring it performs reliably even in high-temperature settings. Lecong Stainless merges cutting-edge production methods with rigorous quality control to provide stainless steel tubing that meets the demanding needs of both local and global markets.
Stainless Steel 321H Tubing is an austenitic stainless steel alloy primarily made up of iron, 17–19% chromium, 9–12% nickel, and titanium to boost high-temperature stability, along with trace amounts of carbon, manganese, and silicon. This unique blend offers remarkable resistance to oxidation, intergranular corrosion, and thermal creep, making it perfect for extended exposure to high temperatures. Typically, the tubing boasts a tensile strength of about 515 MPa, a yield strength ranging from 205 to 310 MPa, and impressive elongation properties. Its combination of mechanical strength and corrosion resistance guarantees long-lasting performance even in extreme conditions.
Standard ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
Dimensions ASTM, ASME and API
Range 1/2″ NB TO 24″ NB IN SCH 5, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160 & XXS as Per NACE MR 01 75
Thickness 0.3mm – 50 mm
Outer Diameter 6.00 mm OD up to 914.4 mm OD
Schedule SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS
Type Seamless / ERW / Welded/ Fabricated
Form Round, Square, Rectangular, Hydraulic, etc.
Length Single Random, Double Random & Cut Length
| Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 5(C+N) – 0.70 max |
| SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
| Element | Grade 904L |
|---|---|
| Density | 8 |
| Melting Range | 1300 -1390 ℃ |
| Tensile Stress | 490 |
| Yield Stress (0.2%Offset) | 220 |
| Elongation | 35% minimum |
| Hardness (Brinell) | – |
Contact us to get a quick quote for your requirement.
We ensures the highest standards for its stainless steel 321H tubing through rigorous testing and certification processes. Each tube undergoes a thorough evaluation, including hydrostability, chemical testing and mechanical testing. Certified to international standards such as ASTM and ASME, these containers provide reliability, durability and high performance in demanding industrial applications.
This tubing is available in sizes ranging from 1/8″ to 24″ in outer diameter. It offers excellent corrosion resistance, especially against intergranular corrosion after exposure to temperatures in the chromium carbide precipitation range of 427-816°C. Ideal for high-temperature applications requiring a continuous, strong, and uniform surface.
Available in dimensions from 1/8″ to 36″ in outer diameter, this tubing is known for its high resistance to stress and pitting corrosion. It’s frequently used in chemical processing and other high-temperature applications due to its robust performance under harsh conditions. The welding process ensures a strong, durable, and leak-proof seam
These tubes come in sizes from 1/4″ to 1″ in outer diameter, designed for excellent thermal conductivity and corrosion resistance. Ideal for high-temperature and high-pressure environments, they are used in industries such as petrochemical and power generation. Their composition resists scaling and oxidation even at elevated temperatures.
Offered in sizes from 1/8″ to 2″ in outer diameter, this tubing provides superior resistance to corrosion and high temperatures. It is used in precision instrumentation and control systems, ensuring reliable performance and accurate measurements. The tubing’s stability at high temperatures ensures minimal expansion and contraction.
These tubes, ranging from 1/2″ to 5″ in outer diameter, are designed to withstand high-pressure and high-temperature environments typical in boiler systems. They offer excellent corrosion resistance, especially against steam and hot gases. Their durability ensures long service life and reliability in energy and industrial applications.
Available in sizes from 1/4″ to 1″ in outer diameter, U-tubes are essential for heat exchanger applications requiring a compact and efficient design. They provide excellent corrosion resistance and thermal stability, making them suitable for use in petrochemical, oil refining, and power generation industries. The U-shape allows for efficient heat transfer in limited spaces.
These tubes come in sizes ranging from 1/4″ to 1″ in outer diameter and are designed for use in condenser applications where efficient heat transfer and resistance to corrosion are critical. They are commonly used in power plants, HVAC systems, and refrigeration. The tubes ensure minimal fouling and scaling over prolonged use.
Fin tubes are available in sizes from 1/2″ to 2″ in outer diameter, designed to enhance heat transfer efficiency in various industrial applications. The addition of fins increases the surface area, improving thermal performance. These tubes offer excellent resistance to high-temperature oxidation and corrosion, making them ideal for heat exchangers and boilers.
You’ll find Stainless Steel 321H Tubing commonly used in high-temperature settings like furnace components, heat exchangers, and boiler tubes in power plants and chemical industries. It’s also a great fit for aerospace parts, automotive exhaust systems, and petrochemical processing equipment where durability and thermal stability are essential. Furthermore, the tubing is utilized in pressure vessels, high-temperature piping systems, and industrial machinery that demand both strength and resistance to corrosion. Lecong Stainless is dedicated to ensuring that each product meets strict quality standards, delivering dependable solutions for challenging industrial environments.
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