50mm te hohonu o te tapahi TCT kowhao te mata drill matua me te weldon shank
Ngā āhuatanga
Ko te 50 mm te hohonu o te tapahanga TCT (tungsten carbide drill) moka pukoro tuwhera me te taha-whakaeke he maha nga ahuatanga e pai ana mo nga tono keri.Ko etahi o nga waahanga matua ko:
1. Tungsten carbide drill bit (TCT)
2. Hoahoa Hollow
3. 50mm te hohonu tapahi
4. Toka-taha
5. He pai mo nga akoako aukume
![momo tapahi annular](http://www.cndrills.com/uploads/annular-cutter-types.jpg)
WHAKAMAHI WHAKAMAHI WAHI
![hoahoa mahi o te kaitapahi annular](http://www.cndrills.com/uploads/operation-diagram-of-annular-cutter.jpg)
Tuhia to korero ki konei ka tukuna mai ki a matou