OP60 pull hole <br>inspection method: roughness meter <br>inspection frequency: 1 piece each/first and last/shift, random inspection 2 pieces/shift <br>Control means: three-self three-inspection record, process inspection record <br>OP80 finished product inspection and <br>testing method: roughness meter <br>inspection frequency :8 pieces≤3000 pieces, 10 pieces>3000 pieces <br>Control means: finished product inspection records
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