... , SKL14Raw Material: 38Si7, 60Si2CrASurface: Plain (oil), black paint, colour paint, zinc, dacromet, hdg, etc. 3. Screw Spike/Sleeper ... samples.Raw Material: Q235, 35#, 45#, 40Mn2, 20MnsiGrade: 4.6, 5.6, 8.8Surface: Plain (oil), black, zinc, hdg, etc. ... samplesRaw Material: 60Si2Mn, 65Mn, 45#, 70#, Q235Surface: Black, colour oiling 13. Rail AnchorType: 50kg, 90LBRaw Material: 60Si2MnASurface: Plain, ...