GB / T 3098.3-2000 Mechanical properties of fasteners set screws GB / T 3098.4-2000 Mechanical properties of fasteners fine pitch thread GB / T 3098.5-2000 Mechanical properties of fasteners self-tapping screws GB / T 3098.6-2000 tight Firmware mechanical properties of stainless steel bolts, screws and studs GB / T 3098.7-2000 Mechanical properties of fasteners rolling screws GB / T 3098.8-1992 Mechanical properties of fasteners screwed deputy GB / T 3098.9-2002 fastening the mechanical properties torque type steel hexagon nuts GB / T 3099.1-2008 Fasteners term threaded fasteners, pins and washers 316L stainless steel screws Laiwu studs, nuts 316L stainless steel studs, screws Qingdao 316L stainless steel studs , stainless steel hose clamps, stainless steel rivets Tai'an 316L studs, stainless steel rivet nut, screw 304 316 stainless steel screws ③ vanadium steel V, Ti Ti, Al Al, boron B, rare earth RE alloying elements are micro-alloying elements, Although low levels, should bid out in steel. For example 20MnVB steel. 0.07-0.12% of vanadium, 0.001 to 0.005% boron. ④ High quality steel should finally add "A" in the steel, as distinct from the general high quality steel. ⑤ special purpose alloy structural steel, and steel dubbed (or suffix) represents the symbol of the steel use. For example, riveting Lo 30CrMnSi special steel, steel, said as ML30CrMnSi. 316L studs _ Jinan, Tai'an Road ground (certified) _316L stud is 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.