... : plain (oil); black paint; color paint; zinc; hdg; etc8. Screw spike/sleeper screw/ dog spikes 1) Type: Ss series square spikes ... /47/815/161''4''-12' used AREMA, BS square spike, Twisted spike, 70 type spike and other spikes. 2) Raw material: Q235, 35 ... 4) Surface: plain (oil), black, zinc, hdg, etc9. Dog spike/railroad spike 1) Type: All kinds are available according to customers drawings ...