We in good faith, professional, fast business philosophy to provide you with professional services Weihai stainless steel hex screws, in accordance with your request for you to do qualified fastener. Jinan Daoqin sincerely welcome every friend to visit, inquire, we would like to work together to create a better future. Products are mainly used for: metallurgy, electric power, petrochemical, textile, steel, cement, construction machinery and other industries martensitic stainless steel: 410 and 416 can be heat strengthened, hardness 35 ~ 45HRC, good machining performance, for general purpose corrosion resistant stainless steel screws. 416 higher sulfur content, is cutting stainless steel. Hex screws, sulfur within 420 Yantai stainless steel? Within R0.15% Linyi stainless steel hexagonal screws, mechanical performance improvement, can be heat strengthened, maximum hardness 53 ~ 58HRC, for applications requiring high strength stainless steel screws. Precipitation hardening stainless steel: hex screws, PH15-7Mo within 17-4PH stainless steel, they can get more than the usual 18-8 stainless steel higher strength, it has been used for high-strength, corrosion-resistant stainless steel screws. Rust corrosion stainless steel screws are not definitely not rust corrosion, stainless steel screws just say screw it with respect to iron rust capability to carry a little stronger corrosion. But stainless steel screws in a particular case or will rust. So stainless steel screws under what conditions can easily lead to rust too! Weihai stainless steel hexagonal screws | Jinan Road ground (certified) | stainless steel hexagonal screws provided by Jinan Daoqin Trading Company. Jinan Daoqin Trading Company (www.daoqinshangmao.com) (www.daoqinshangmao.com) Shandong Jinan, hardware accessories leader over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. Jinan Road ground in leadership with the staff warmly welcome all inquiries negotiations to create the Jinan Daoqin better future.