... 42CrMo 2.standards:JIS,DIN,ASTM,BS 3.process: Sand casting gear 4.Weight:300kg 1. material: gray iron,ductile ... drawing and requirements.5. Main products : precision casting ,sand casting.6. Manufacturing equipment: electric furnace, mid-frequency Induction ... furnace, cupola furnace,anneal furnace, sand mixing machine, shot blast chamber, various mould machine, standing ...