... ,EN Materials:42CrMo4,CK45,16Mn.etc CNC Machining Precision drop hammer forged connecting link:Feature:- Precision forging hammers range from 160 ... , 34CrMo4, 4137, 42CrMo, 4140, SCM440, 20CrMnMo, 40CrNiMo, 20CrNi2Mo, 20Cr2Ni4A, 34CrNi3Mothe unit weight of forgings:range from 0.1kg/pc till 200kg ... worldwide:We welcome your inquiry with the drawings!!! Precision drop hammer forged connecting link