304 stainless steel coil is a widely used material, ‌ has excellent rust corrosion resistance and good processing properties. ‌ It belongs to austenitic stainless steel, ‌ is divided into cold rolled coil and hot rolled coil two kinds. The characteristics of ‌304 stainless steel coil include beautiful surface, ‌ variety of use possibilities, ‌ good corrosion resistance, ‌ more durable than ordinary steel, ‌ resistance to high temperature oxidation and high strength, ‌ therefore can resist fire, ‌ and has excellent plasticity and weldability. ‌ In addition, ‌304 stainless steel roll also has good intergranular corrosion resistance and processing properties, ‌ is widely used in industrial and furniture decoration industries and food and medical industries. ‌ It should be noted that compared with ordinary 304 stainless steel, ‌ food-grade 304 stainless steel, ‌ its content index is more strict, ‌ allows a certain range of fluctuation, ‌ and limits the content of various heavy metals.