... CMM 5.Smooth surface,Ra1.0 Center Plate Sand casting used for industrial clutch and brakes.1. ... kinds of quality checking Equipments.2. Now a series of strict quality control process and manufacture ... ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.3. ... all over the world;2.Exporting to U.S.A, U.K., Germany, Italy, Japan, Swiss, ...