4” 5” 6” dth hama DHD 340 350 pihi moka keri
Ko te bit DTH te toka tapahi taputapu.Ko te moka DTH Sinodrills he mea hanga mai i te maitai koranu kounga pai ake na Timken i US I tua atu, kei te whakamahi a tatou moka DTH katoa i te tohu "Hua Ono" TC carbide e whakarato ana (nga paatene TC) mo Boart Longyear.I tua atu i te hangarau toi hanga toi hanga to tatou bit DTH ki te kounga teitei me te pono ake.
Na te ahua rereke o te kanohi ka pai te moka DTH mo nga momo toka.
Mata papatahi: He hoahoa mo te ao katoa, ina koa mo te hanga toka pakari me te toka.Ko te tikanga, ko te kanohi papatahi me te hoahoa paatene hemi-porowhita te mea tino rongonui.
Te kanohi convex: He hoahoa matarohia mo te hanga toka ngawari ki te reo pakeke e kore e tino awhi.He tino pai rawa atu te tere o te kuhu o tenei hoahoa engari he iti te rereke o te kohao mena he uaua nga toka.
Te kanohi concave: Ko nga hanganga toka pakeke ki te pakeke he iti ake te pakaru me te pakaru.Ina koa mo te keri poka hohonu, he pai te whakahaere i te rerekee o te kohao.
| Tauira | Hononga Miro | OD(mm) | Te Rahi Puka | Kāhua Shank | Pēhanga Mahi(Pae) |
| CD35 | API 2 3/8" Reg | φ82mm | φ90-φ105 | DHD3.5 CD35 | 1.0-1.5Mpa |
| CD45 | API 2 3/8" Reg | φ99mm | φ110-φ135 | Cop44 DHD340 CD45 | 1.0-2.5Mpa |
| CSD4 | API 2 3/8" Reg | φ99mm | φ110-φ135 | SD4 CSD4 | 1.0-2.5Mpa |
| CQL40 | API 2 3/8" Reg | φ99mm | φ110-φ135 | QL40 CQL40 | 1.0-2.5Mpa |
| CD55 | API 2 3/8" Reg API 3 1/2" Reg | φ125mm | φ135-φ155 | Cop54 DHD350R CD55 | 1.0-2.5Mpa |
| CSD5 | API 3 1/2" Reg | φ125mm | φ135-φ155 | SD5 CSD5 | 1.0-2.5Mpa |
| CQL50 | API 3 1/2" Reg | φ125mm | φ135-φ155 | Cop54 QL50 CQL50 | 1.0-2.5Mpa |
| CD65 | API 3 1/2" Reg | φ148mm | φ155-φ190 | Cop64 DHD360 CD65 | 1.0-2.5Mpa |
| CSD6 | API 3 1/2" Reg | φ148mm | φ155-φ190 | SD6 CSD6 | 1.0-2.5Mpa |
| CQL60 | API 3 1/2" Reg | φ148mm | φ155-φ190 | Cop64 QL60 CQL60 | 1.0-2.5Mpa |
| CD85 | API 4 1/2" Reg | φ185mm | φ195-φ254 | Cop84 DHD380 CD85 | 1.0-2.5Mpa |
| CSD85 | API 4 1/2" Reg | φ185mm | φ195-φ254 | SD8 CSD8 | 1.0-2.5Mpa |
| CQL80 | API 4 1/2" Reg | φ185mm | φ195-φ254 | QL80 CQL80 | 1.0-2.5Mpa |
| CSD10 | API 4 1/2" Reg API 5 1/2" Reg API 6 5/8" Reg | φ225mm | φ254-φ311 | SD10 CSD10 | 1.0-2.5Mpa |
| CN100 | API 6 5/8" Reg | φ225mm | φ254-φ311 | NUMA100 CN100 | 1.0-2.5Mpa |
| CSD12 | API 6 5/8" Reg | φ275mm | φ305-φ445 | SD12 CSD12 | 1.0-2.5Mpa |
