Hollow Drill Bits ni a madung jai lang ai lam ni

1. Metalworking: Steel pipe hte plate ni hta hka htung ni hpe htu na matu htuk manu ai, grau nna diameter kaba ai ( 20mm hta grau kaba ai (sh) maren sha re ai) ni hpe htu na matu htuk manu ai. Ga shadawn, pipe ni hpe bang ai shaloi, n-gun n rawng ai drill bit gaw 5mm galu ai stainless steel plate ni hpe lawan ai hku shang lu nna, chip hpe shi hkrai shi shaw kau lu ai.

2. Concrete/Nlung galaw ai: Lung seng-hpun n-gang hte hpawn lang yang, 300mm sung ai hka htung ni hpe htu lu ai (data source: Bosch Professional Tool Manual), nta gawgap ai shaloi hka htung hpe n-gun jaw na matu law law lang lang lang ai.

3. Hpun htu ai: Chyinghka hpaw na matu, nbung shang ai hka htung ni hte kaga hpun galaw ai hta lang ai, htunghking hku galaw ai twist drill (actual measurement comparison) hta na htam masum jan grau akyu rawng ai.