4.9 Does a Quality-Control Program Always include These Four Jobs?
In a particular company, the actual details of the jobs of the quality-control program will depend upon the production circumstances. A company that purchases parts and materials and then machines and processes some of them after which it assembles the various components , will probably include all four jobs of quality control in its program.
A producer of studs , nuts, and bolts, whose only mechanical facilities are screw machines, will very likely use only product control on machines and, possibly, special process studies in the quality-control program. The mail-order house may use chiefly incoming material control, and the textile manufacturer both incoming-material control and product control The chemical manufacturer, with "batch" production, may depend upon new-design control special process studies together product and with control and incoming material control.