Industrial Roller Sprocket Material: carbon steel as C45, 20CrMnTi, 40Cr, 42CrMo, stainless ... -125,20B9-114,24B9-90,28B9-76,32B9-76Heat Treatment: Hardening and Tempering, High Frequency Quenching, Carburizing QuenchingProcess: Investment casting, die ... offer drawings)Main markets: US, Europe, Asia. South America Industrial Roller Sprocket