This standard specifies the methods for measuring the roundness of basketballs, footballs, volleyballs and handballs. This standard applies to basketball, football, volleyball and handball for sports. This standard does not apply to rubber and plastic balls.
GB/T 14625.1-1993 history
2008GB/T 14625.1-2008 Test methods for basketball,football,volleyball and handball- Part 1:Measurement of roundness
1993GB/T 14625.1-1993 Basketball, football, volleyball, handball. The measurement of roundness