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S46 DTH Hammer (Pēhanga Teitei)
Ko te riu keri hurihanga, te kaitao hau me te 'DTH drill string' te mea nui mo te DTH drilling i te mea ko te 'DTH drill string' he mea hanga i nga wa katoa o DTH drill rods, DTH hama me DTH bits.
Ko tetahi o nga waahanga matua, ko te hama DTH te mahi hei huri i te pehanga hau ki te kaha paanga, me te whakawhiti i te wa kotahi te kaha o te paanga me te kaha hurihanga ki nga moka DTH.
Ko tetahi o nga waahanga matua, ko te hama DTH te mahi hei huri i te pehanga hau ki te kaha paanga, me te whakawhiti i te wa kotahi te kaha o te paanga me te kaha hurihanga ki nga moka DTH.