321 stainless steel has better crack resistance during the welding process due to the titanium content. In addition, 321 stainless steel also has good processing and welding properties, making it easy to perform cutting, bending, welding and other processing operations. Its mechanical properties such as tensile strength, flexural strength and elongation are also excellent, and can meet the requirements of use in various complex environments. Because 321 stainless steel have excellent corrosion resistance and high temperature performance, they are widely used in petroleum, chemical industry, aviation, aerospace and other fields. In the petroleum and chemical industries, since the production process involves a large amount of corrosive media such as acids, alkalis, and salts, 321 stainless steel can effectively resist the corrosion of these media and ensure the long-term stable operation of the equipment. In the aviation and aerospace fields, 321 stainless steel has become one of the important structural materials due to high operating temperatures and the requirement for materials with good creep resistance.
Each coil undergoes refined hot-rolling or cold-rolling processes based on application needs. Hot-rolled coils deliver superior strength and are suitable for heavy-duty structural components, while cold-rolled coils offer a smoother surface finish and tighter dimensional control—perfect for products requiring aesthetic appeal, such as decorative panels or electronic enclosures.
Surface treatments are tailored to enhance both functionality and appearance:
2B Finish: A smooth, matte surface ideal for general fabrication and painting.
BA Finish: A bright, reflective surface often used in appliances and visible architectural elements.
No.4 Finish: A brushed surface that reduces fingerprint visibility, making it popular for kitchen countertops and medical equipment.
Our stainless steel coils are manufactured through advanced hot and cold rolling processes to meet diverse industrial requirements. The hot rolling process utilizes controlled heating and multi-pass rolling technology to form coils with uniform microstructure and excellent mechanical properties, providing an ideal solution for applications requiring higher thickness tolerance and structural strength. This is complemented by our fully automated cold rolling mills and protective atmosphere annealing processes, equipped with laser thickness gauges (thickness tolerance ±0.01mm) and online surface defect detection systems to ensure dimensional precision and surface quality meeting 2B/BA/No.4 standards.
The integrated production line includes 20-roll reversible rolling mills, hydrogen bright annealing lines (temperature accuracy ±3°C), and fully automatic coiling equipment. Compliant with international standards such as ASTM A240 and EN 10088, we support customization of various specifications, special materials, and differentiated surface treatments. Our products are widely used in new energy vehicles, home appliance manufacturing, precision electronics industries, and other fields requiring both structural components and precision materials.
In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.
Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.
Please give us a message