Screw spike/Sleeper screw/ Coach screw/ Drive screw/ Timber screw

 

Type : Ss5. Ss8. Ss25 . Ss36 ......

Raw material : Q235. 35#.45# . 40Mn2. 20Mnsi

Grade : 4.6.5.6.8.8

Surface: plain (oil ). black . zinc .hdg etc