... Inspected by CMM 5. Ra1.0, Polish Ra0.4 Piston casting used for industrial clutch and brakes.1. Material: ... 2. Typical products:Scaffold fittings, Template parts, Railway fittings, ring flange , electromagnetic steel cover, piston, pressure plate, center plate, wear ... plate, cylinder, impeller, disc etc.3. Nearly 150 varieties of products. Releated parts, ...