Shear Connector, High Strength Bolts, Welding Stud manufacturer / supplier in China, offering Grade 8.8, 10.9 Segment Bolt Tunnel Bolt Curve Bolt, China Professional Manufacturer Heavy Hex Bolt Assembly with Nut and Washer, ASTM A490, A325 F10t High Strenth Bolt Heavy Hex Bolt Assembly with Nut and Washer and so on.