... 4.Inspected by CMM 5.Smooth surface,Ra1.0 Center Plate Sand casting used for industrial clutch and brakes.1. Material: ... Railway fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc etc.3. Nearly 150 varieties of ... Ductile iron, alloy ironAluminumASTM A356, A360, A380, ADC12 etc. Center Plate Sand Casting for industrial clutch