... 1.5~34) Processing: precision hot and cold forging, precision machining and roll forming5) Heat treatment: annealing, normalizing, carbonitriding,carburizing, ... , AISI , BS , DIN , JIS , NFProcessInvestment casting , die casting , gravity casting , sand castingMachiningTurning , milling , drilling , grinding , threading , CNC machining, etc.FinishingSand blasting , polishing , plating , acid ...