... 3.high precision 4.good strength 5.excellent sintered gear wheel 1.Good quality raw(alloy,carbon steel) material ... machining strict inspection.2. Specifications We make gear wheel , shaft, gearbox . We make High Precision gear, gear wheel , shaft, gearbox .3. We ... : Alloy Steel, Carbon Steel, Stainless Steel, Hardended & Tempered Steel, Cast Iron, Aluminum, Copper, Brass and so on.5. Heat Treatment ...