304 stainless steel tube has good intercrystal corrosion resistance, excellent corrosion performance and cold working, stamping performance, can be used as heat resistant stainless steel.At the same time, the mechanical properties of the steel are still good at -180℃.Under the condition of solid solution, the steel has good plasticity, toughness and cold working property.Good corrosion resistance in oxidizing acid and atmosphere, water and other media, therefore, the production and use of 304 stainless steel is the largest, the most widely used type of steel.