号数(港码) 直径(mm) 周长(mm)

7--------------14.5--------------46

8--------------15.1--------------47.5

9--------------15.3--------------48

10-------------16.1--------------50.5

11-------------16.6--------------52

12-------------16.9--------------53

13-------------17.0--------------53.5

14-------------17.7--------------55.5

15-------------18.0--------------56.5

16-------------18.2--------------57

17-------------18.3--------------57.5

18-------------18.5--------------58

19-------------18.8--------------59

20-------------19.4--------------61

21-------------19.7--------------62

22-------------20.2--------------63.5

23-------------20.4--------------64

24-------------21.0--------------66