... casti iron nuts,casting nut,casting part,nut and cylinder headManufacturing process:sand casting,centrifugal casting etcMachining:turning, ... ,carbon Steel,plastic and stainless Steel2.process: casting or forging 3.application: connecting or couplingCastings ... alloy steel etc.2.Manufacturing Processes: sand casting, investment casting, centrifugal casting etc.3.Technology: surface treatment, polishing, ...