... , 35#, 45#, 40Cr; ect4. High Strength Fish Bolt/ clip bolt / clamp bolt / track bolt 1) Type: hex head, square head, flange ... .e2001.e2006.PR401.PR309. 2) Raw material: 60Si2MnA7. Rail clip/Tension clamp 1) Type: SKL1, SKL3, SKL12, SKL14 2) Raw Material: 38Si7 ...