... :30kg.4.certificate:ISO9001:20081.sand casting cast iron 2.Standard: ASTM, AISI, BS, DIN, ... Feature:sand casting cast ironMaterials: grey iron, ductile iron, malleable iron,heat resistant iron, carbon steel, stainless steel, aluminum, ... machine shop used): vernier caliper, depth caliper, micrometer, depth micrometer, raius caliper, digital caliper, digital depth caliper, ID micrometer, OD micrometer ...