... weight:500kg to 120 tons Material:Carbon steel,low alloy steel:ZG20SiMn,ZG50Mn,ZG35SiMn,ZG35CrMo,ZG35SiMnMo,ZG42CrMo,ZG40Cr, ... steel.The casting parts can be supplied as following treatment:Heat Treatment: Normalized, normalized and tempered,quench and temperedMachining: Rough machined,semi ... rocker arm is a reciprocating lever that conveys radial movement from the cam lobe into linear movement at ...