... 350mm.3.Weight:30kg.4.certificate:ISO9001:20081.sand casting cast iron 2.Standard: ASTM, AISI, BS, DIN, JIS, ... supply chasing ,heat treatment,machining service.6. Manufacturing equipment (foundry used): cupola, electric furnace, resin-bonded, dry sand ... machine,normal lathe, line cutter etc.7. Testing equipment (foundry used): elongation tester, hardness tester, metallographic microscope, spectrometer, ...