... ,ASTM,BS 3.process: Sand casting gear 4.Weight:300kg 1. material: gray iron,ductile iron, carbon steel, aluminum, bronze, brass2. weight : ... to the customers drawing and requirements.5. Main products : precision casting ,sand casting.6. Manufacturing equipment: electric furnace, mid-frequency Induction furnace ... INDUSTRY CO., LTDADD: Youjia Industry Zone, Ganjingzi District, Dalian , China casting gear