... Material Co., Ltd.,one professional manufacture of railway material in China, we have our own R & D department, ... SKL3, SKL12, SKL14Raw Material: 38Si7, 60Si2CrASurface: Plain (oil), black paint, colour paint, zinc, dacromet, hdg, etc. 3. Screw Spike/ ... samplesRaw Material: 60Si2Mn, 65Mn, 45#, 70#, Q235Surface: Black, colour oiling 13. Rail AnchorType: 50kg, 90LBRaw Material: 60Si2MnASurface: Plain ...