... :Accuracy: according to the dimension tolerance of machining of customer's requirement.Surface roughness: Ra0.8-3.2Weight:ranging from 0 ... .20,25,30,35,40,45Green-sand mouldingASTM A126-Class A, Class B, Class CResin-sand mouldingDIN-GG10, GG15, GG20, GG25, GG30Lost foam ...