Industrial Roller Sprocket Material: carbon steel as C45, 20CrMnTi, 40Cr, 42CrMo, stainless steel, nylon Material: carbon steel as C45, 20CrMnTi, 40Cr, ... , High Frequency Quenching, Carburizing QuenchingProcess: Investment casting, die casting, gravity casting, sand castingMachining: Turning, milling, drilling, grinding, threading, ... markets: US, Europe, Asia. South America Industrial Roller Sprocket