... The casting equipment: CNC milling and turning machine, Lathe, Forging hammer, drilling tapping, grinding and polishing machine, etc.3). The ... galvanization, cold galvanization or colored eletroplate, powder coating and so on. 5). Quality Approvals: all casting machining ... covering hydraulic cylinders, pistons, flanges, valves parts, casting and forging parts, engineering goods, etc.5. Quality control ...