... by CMM 5. Ra1.0, Polish Ra0.4 Piston casting used for industrial clutch and brakes.1. Material: ASTM C ... Template parts, Railway fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc ... for example Inspection1. The whole quality control management has been carried out during the whole process of manufacture with the assistance of ...