01 7PCS Tshuab nrog Hexagonal Ua Ke Tap Drilling thiab Tapping
1. Lub shank hexagon uas siv tau rau txhua lub tshuab. 2. Kev tho thiab tapping ua ke, tuaj yeem tawm tsam txhua yam hlau nyias. 3. Tho ua ntej thiab tom qab ntawd tapping, ua rau nws yooj yim rau kev tho ntsia hlau ...