Company: Jinan Daoqin company was founded in 2008, is located in the capital city of Shandong Province, the beautiful Springs - Jinan Jinan 304 stainless steel screws, is a young company with a young team, but we are very professional. Division I since 2011 to become China's largest professional stainless steel fastener manufacturers - Zhejiang Dongming Stainless Steel Co., Ltd., a strategic partner of stainless steel screwdriver, 5 consecutive years Dongming "THE" "TONG" special distribution in Jinan, Shandong region Right. The physical properties of data on the physical properties of stainless steel and carbon steel screws contrast, slightly higher than the density of carbon 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 similarly sized stainless steel screws Jinan 304 austenitic stainless steel of the highest minimum; carbon steel, ferritic and martensitic stainless steel magnetic, austenitic stainless steel non-magnetic, but it generates a work hardening martensitic phase transformation will generate magnetism, heat treatment method can be used to eliminate this martensite and restore its non-magnetic. Jinan stainless steel screws 304 | Daoqin commerce (certified) | stainless steel screws provided 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 Daoqin commerce leadership with the staff warmly welcome all inquiries negotiations to create a better trade Daoqin future.