钎头-球型截齿 BUTTON BIT - Spherical buttons | ||||||||||||
直径(mm) Diameter | 33 | 33 | 35 | 37 | 38 | 38 | 41 | 42 | 45 | 51 | ||
截齿数量 No. of buttons | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | ||
冲水孔 Flushing hole | side | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | |
centre | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
钎头-子弹型截齿 BUTTON BIT - Ballistic buttons | ||||||||||||
直径(mm) Diameter | 33 | 35 | 35 | 37 | 38 | 41 | 45 | |||||
截齿数量 No. of buttons | 7 | 7 | 7 | 7 | 7 | 9 | 9 | |||||
冲水孔 Flushing hole | side | 1 | 1 | 1 | 1 | |||||||
centre | 1 | 1 | 1 | 1 | 1 | 3 | 3 | |||||
十字型钎头 Cross-type bit | ||||||||||||
直径(mm) Diameter | 33 | 35 | 37 | |||||||||
冲水孔 Flushing hole | side | 2 | 2 | 2 | ||||||||
centre | 1 | 1 | 1 |