... roughnessup to Ra1.6 ~ Ra6.3Applied softwarePro/E, Auto CAD, Solid Work 2001,CAXA, UG, CAD/CAM/ ... defected surface with grinding wheel. Heat treatmentHeat treat the casting by nomalizing, annealing, quench+tempering, induction quenching, case ... & Gauges, etc. Pack & TransportAfter rust prevention, pack the parts into plywood or iron case for transportation. ball valve parts Investment Casting