... 3.Weight:30kg.4.certificate:ISO9001:20081.sand casting cast iron 2.Standard: ASTM, AISI, BS, DIN, JIS, ... 4.ISO9001Detail Feature:sand casting cast ironMaterials: grey iron, ductile iron, malleable iron,heat resistant iron, carbon steel, stainless steel, aluminum, bronze, ... equipment (foundry used): cupola, electric furnace, resin-bonded, dry sand mix miller, quake press molding machine, turning molding ...