According to the production process, stainless steel round steel can be divided into three types: hot rolled, forged and cold drawn. The specifications of hot-rolled stainless steel round bars are 5.5-250 mm. Among them: small stainless steel round bars of 5.5-25 mm are mostly supplied in bundles of straight bars, which are often used as steel bars, bolts and various mechanical parts; stainless steel round bars larger than 25 mm are mainly used for the manufacture of mechanical parts or seamless steel pipe billets.304 stainless steel is the most widely used chromium-nickel stainless steel, which has good corrosion resistance, heat resistance, low temperature strength and mechanical properties. Corrosion resistant in the atmosphere, if it is an industrial atmosphere or a heavily polluted area, it needs to be cleaned in time to avoid corrosion.Stainless steel round steel has broad application prospects, and is widely used in hardware and kitchenware, shipbuilding, petrochemical, machinery, medicine, food, electricity, energy, aerospace, etc., and building decoration. Equipment used in sea water, chemical, dye, paper, oxalic acid, fertilizer and other production equipment; photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts.