20 1: acid and alkali resistance, high density, polishing without bubbles, used for some shallow stretching products;
202: Nickel-saving stainless steel, with good mechanical properties and corrosion resistance, is used to make decorative plates and hardware products.
2205: Used for welding materials, such as oil refining, paper making, fertilizer and petroleum;
304: widely used, with good corrosion resistance and heat resistance, and no heat treatment hardening phenomenon, used in decoration, household appliances, kitchen utensils, food machinery and so on.
304L: Low carbon stainless steel, with corrosion resistance generally similar to that of 304, and good intergranular corrosion resistance after welding, which is used in coal, chemical industry, petroleum and other industries;
32 1: titanium is added to prevent intergranular corrosion and used in building materials, chemistry and agriculture;
3 16: molybdenum is added, which has corrosion resistance, atmospheric corrosion resistance and excellent high temperature strength, and is used in chemical industry, paper making and seawater equipment;
3 16L: low carbon series, excellent intergranular corrosion resistance, suitable for products with special requirements for intergranular corrosion resistance;
409: ferritic stainless steel for exhaust pipe and heat exchanger;
4 10: martensitic stainless steel with good machinability, used for blades, bolts, nuts, etc.