大径 中径 小径
1/16 27 7.895 7.142 6.389 7.938
1/8 27 10.242 9.489 8.736 10.287
1/4 18 13.616 12.487 11.358 13.716
3/8 18 19.055 15.926 14.797 17.145
1/2 14 21.223 19.772 18.321 21.336
3/4 14 28.568 25.117 23.666 26.670
1 11.5 34.228 31.461 29.694 33.401
1 1/4 11.5 41.985 40.218 38.451 42.164
1 1/2 11.5 48.054 46.287 44.520 48.260
2 11.5 60.092 58.325 56.558 60.325
2 1/2 8 72.699 70.159 67.619 73.025
3