... drawing e clip for railroad,track e clip ,eastic clip for railway,rial spring clip,elastic clip for rail,tensile clip for rail.spring clip for railway,eastic clip for railway,tensile clip for railroad,spring ... clip1.material:steel, 60Si2Mn 60Si2CrA 55Si2Mn 2.hardness :Hrc44-483.function,rail fastener4.certificate:ISO9001:2008,CRCC5.packing ...