50 hli txiav tob TCT hollow core laum ntsis nrog weldon shank
Cov yam ntxwv
Lub TCT (tungsten carbide drill) hollow drill bit uas muaj qhov tob txog li 50 hli nrog rau sab shank muaj ntau yam ntxwv uas ua rau nws tsim nyog rau kev siv drilling. Qee qhov tseem ceeb suav nrog:
1. Tungsten carbide laum ntsis (TCT)
2. Tsim qauv khoob
3. 50 hli txiav qhov tob
4. Sab-khoov shank
5. Haum rau cov tshuab sib nqus
DAIM DUAB QHIA TXOG KEV UA HAUJ LWM HAUV TEB CHAWS


Sau koj cov lus ntawm no thiab xa tuaj rau peb

