... JIS,DIN,ASTM,BS 3.process: Sand casting gear 4.Weight:300kg 1. material: gray iron ... products : precision casting ,sand casting.6. Manufacturing equipment: electric furnace, mid-frequency Induction furnace, cupola ... machine, hanging shot blast cabinet,7. Testing equipment: E980 direct-reading spectrometer hi-temperature metallographymicroscope chemical ... , Ganjingzi District, Dalian , China casting gear