... .Inspected by CMM 5.Smooth surface,Ra1.0 Center Plate Sand casting used for industrial clutch and brakes. ... fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.3. Nearly 150 ... Acceptable and stable in quality;3. Circumspect and satisfactory of service,4. Punctual delivery time; Currently material for other castings: ...