... , SKL12, SKL14Raw Material: 38Si7, 60Si2CrASurface: Plain (oil), black paint, colour paint, zinc, dacromet, hdg, etc. 3. Screw Spike/Sleeper Screw ... Material: Q235, 35K, 45#, 40Mn2, 20Mnsi, 35CrMo, 40Cr, 42CrMo...Grade: 4.6, 4.8, 5.6, 8.8, 10.9 ... and samplesRaw Material: 60Si2Mn, 65Mn, 45#, 70#, Q235Surface: Black, colour oiling 13. Rail AnchorType: 50kg, 90LBRaw Material: 60Si2MnASurface: Plain, black ...