1.Piston casting for induatrial clutch 2.17kg pressure ... by CMM 5. Ra1.0, Polish Ra0.4 Piston casting used for industrial clutch and brakes.1. Material ... Template parts, Railway fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear plate, cylinder, impeller, disc ... , alloy ironAluminumASTM A356, A360, A380, ADC12 etc. Piston Casting for industrial clutch