... : 42CrMo 2.standards:JIS,DIN,ASTM,BS 3.process: Ring Gear 4.Weight:35kg Features:1) Materials: carbon steel, ... ) Processes: die-forging, various loose hammers5) Manufacturing equipment: three die-forging product lines (3 ton stamp forging hammer product ... various loose hammers and water hydraulic pressesand , automatic control ring forging machine, heat treatment cellar, digital control fibre natural ...