1.spring clip for railroad ,elastic clip 2.anti-rust and anti-corrosion pre-treatment 3.can make mould as customer 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. ...