Inspection Rules Of Steel Ball
1. The finished steel balls must be tested by the quality management department. And steel balls which had been sent to customers shall be accompanied by quality certification.
2. The customers should test the
steel balls according to JB3371-83 "roller bearing parts and goods inspection rules".
3. The measurement of steel ball should be carried out under the oil-free status, then the steel ball must deal with rust-proof again.
4. Measuring size of steel balls, the measuring instruments, the steel balls and other standard parts should be in the same temperature.
