... screw spikes, timber drive spikes, T-bolts, fish bolts, switch & crossing bolts, high tensile strength bolts for rail bridges etc.3, Various type ... System metallurgical plants, railway bridges, airport hangar, port machinery, high-rise buildings, ... University StadiumShanghai F1 Int’l CircuitNanjing olympic sports centerNational swimming ... and so on.Dia. Over Thread Thread Length-minThreads Per Inch7/8" ...