Scope: Mainly used for: environmental protection equipment, medical equipment, communications equipment, power facilities, electronic products, instruments, food machinery, petrochemical, ship fitting, valve piping, building walls, outdoor occasions, sports facilities, outdoor decoration . Usually used as a decorative tube plate is austenitic stainless majority of 304, in general, is a non-magnetic or weakly magnetic, but the chemical composition fluctuations caused by smelting or processing may occur in different magnetic state, but can not be considered counterfeit or substandard Zibo stainless steel self drilling screw, which is what causes it? Austenitic mentioned above are non-magnetic or weakly magnetic stainless steel self drilling screws, Tai'an, and martensite or ferrite is magnetic stainless steel self drilling screws, due to improper heat treatment smelting segregation or will cause austenitic 304 stainless steel martensite or ferrite. Thus, the 304 will carry the weak magnetism. Weifang stainless steel self drilling screw | stainless steel self drilling screws | Jinan Road ground is provided by Jinan Daoqin Trading Company. Jinan Daoqin Trading Company (daoqinshangmao.com) strong, credible, in Jinan, Shandong and other hardware accessories industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Jinan Road ground and you work into the brilliant, for a better future!