... .3.Weight:30kg.4.certificate:ISO9001:20081.sand casting cast iron 2.Standard: ASTM, AISI, BS, DIN, JIS ... QC 4.ISO9001Detail Feature:sand casting cast ironMaterials: grey iron, ductile iron, malleable iron,heat resistant iron, carbon steel, stainless steel, aluminum ... equipment (machine shop used): numerical control lathe, vertical type CNC machining center, boring machine, universal miller, standing ...