What Is SUS 321 2B Stainless Steel Pipe?
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If you are looking for high-temperature and corrosion-resistant stainless steel pipes, SUS 321 2B stainless steel pipes are worth considering. SUS 321 is a titanium-stabilized austenitic stainless steel designed for demanding industrial environments, offering excellent resistance to intergranular corrosion and oxidation at high temperatures. The 2B surface finish ensures a smooth and uniform surface, making it ideal for industrial, chemical, and high-pressure applications.
According to the latest market data, the price of SUS 321 2B stainless steel pipes is approximately US$5.00 to US$8.00 per kilogram, depending on the pipe size, wall thickness, and surface finish.
SUS 321 2B Stainless Steel Pipe Price
| Pipe Size | Price per kg (USD) |
|---|---|
| DN15 – DN150 | $5.00 – $6.50 |
| DN200 – DN600 | $6.70 – $8.00 |
What is SUS 321 2B stainless steel tubing?
SUS 321 stainless steel is stabilized with titanium to prevent chromium carbide precipitation during welding or exposure to high temperatures (400–850°C), and it exhibits excellent oxidation resistance at temperatures up to 900°C. The 2B surface finish is a bright, smooth surface obtained through cold rolling and annealing processes, commonly used in piping systems for applications in: chemical plants, heat exchangers, boilers and reactors, food and beverage processing, petrochemicals, and marine engineering.
What are the differences between SUS 321 2B stainless steel tubing and Bright Annealed?
The main difference is the surface finish: SUS 321 is a specific alloy (Titanium-stabilized) good for high temps, while 2B is a common, cost-effective finish (smooth, semi-reflective) often applied to 321, whereas Bright Annealed (BA) is a superior, mirror-like finish achieved by annealing in a controlled, protective atmosphere, making it more aesthetic, hygienic, and corrosion-resistant but also more expensive than 2B.
What is the difference between SUS 321 and SUS 304 stainless steel pipes?
SUS 321 stainless steel pipes are titanium-stabilized austenitic pipes containing 17–19% Cr, 9–12% Ni, and 0.3–0.7% Ti, which prevents chromium carbide precipitation during high-temperature service (400–850°C), offering superior resistance to intergranular corrosion compared to SUS 304 pipes, which lack titanium and have slightly lower Cr (18–20%) and Ni (8–10.5%) content.
Can SUS 321 2B pipes be welded?
Yes, SUS 321 is highly weldable, with minimal risk of intergranular corrosion due to titanium stabilization.
What is the HS code for SUS 321 2B stainless steel pipes?
The standard HS Code is 73063000 for stainless steel welded or seamless pipes.
Why Choose GNEE for SUS 321 2B Stainless Steel Pipes
Over 18 years of experience supplying high-quality stainless steel products
Compliance with ASTM, JIS, GB, DIN, and ISO 9001 standards
Full Mill Test Certificates (MTC) for traceability and quality assurance
Customizable sizes, surface finishes, and packaging to meet project needs
If you are looking for SUS 321 2B stainless steel pipes, GNEE has ready stock, seamless and welded options, and expert consultation available. For detailed chemical composition, product samples, and updated pricing, contact us immediately to secure your order.
