Mainly sold to cities are: Tianjin, Shanghai, Jiangsu, Anhui, Chongqing, Shaanxi, Hebei, Hunan, Jiangxi, Sichuan, Guangdong, Jilin, Ningxia, Shaanxi, Fujian, Hainan and other places, we have quality assurance, after-sale service, regular telephone follow customer fasteners usage. Providing customers with a full range of services "is our consistent commitment to corporate culture: professionalism, integrity Jinan cheap stainless steel bolts, the physical properties of the physical properties of stainless steel and carbon steel quick comparison of the data density of Jinan 304L stainless steel bolts, steel is slightly higher than ferritic and martensitic stainless steel, while slightly lower than austenitic stainless steel; resistivity by carbon steel, ferritic, martensitic and austenitic stainless steel Sort Ascending; sort of linear expansion coefficient is similar size Jinan 316L stainless steel bolts, austenitic stainless steel of the highest minimum; carbon steel, ferritic and martensitic stainless steel magnetic, non-magnetic austenitic stainless steel, but it generates a work hardening martensitic phase transformation will produce magnetic heat treatment method can be used to eliminate this martensite and restore its non-magnetic. Jinan Jinan 316 stainless steel bolts _ Daoqin (certified) _ stainless steel bolts supplied by Jinan Daoqin Trading Company Jinan Daoqin Trading Company (daoqinshangmao.com) Shandong Jinan, hardware accessories leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Jinan Daoqin leadership with the staff warmly welcome all walks of life For more information, negotiate, create Jinan Daoqin a better future.