Our company’s productions include shear studs, high strength bolts and nuts ,high strength hexagon bolt nut and plain washer for steel structures, torshear type high strength bolt connection and flange bolts. All products could be arranged according to the following standards : DIN931,DIN933, DIN6914-6916, ASTM A490/A490M, ASTMA325/A325M, GB10433, ISO13918, JIS B 1198, BS5400,AWSD1. 1