... , A3, 40Cr, 20CrMnTi, 42CrMo, copper, stainless steel and so on as per your requestprocessForged or castingHeat treatmentHigh frequency quenching, heat ... color painting, or customer requirementPerformanceHigh precision, high wear resistance, low noise, smooth and steady, high strengthModel numberStandard or nonstandard (single duplex ... bag and outer carton box or customer requirement. weld on sprocket