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Spike is mainly used for steel rail or base plate and wooden rail link,namely a kind of fasteners which is used to connect steel rail and sleeper or base plates and sleeper.Usually divided into five types: conventional spike, cold spike, spring spike, screw spike.Mine spikes apply hot-rolled steel manufacturing technology,the nail head bottom shape fits the rail bottom shape.Screw rod surface is bright and clean, no crack in the joint of screw head jaw and screw rods, tip without burr, folding, no bubble and no burnt, crack that can interfere the use of spike in spike surface, get a lot of application in coal mine, road traffic.