... drawings: PDF, Auto CAD, Solid work, JPG, Proe- Standard: ASTM, AISI, BS, DIN, JIS, NF Main production ... , heat treatment cellar.Manufacturing equipment (machine shop used): numerical control lathe, vertical type CNC machining center, boring machine, ... , hardness tester, metallographic microscope, spectrometer, PC thermometer, CE NSP-550CS heat analysis instrument, molding sand testing equipment, ...