89mm putorino mo te keri puna wai me te miro API IF
Ko tenei paipa keri keri wai, te ahua poto o te putorino kohao, he momo rakau keri papatahi o waho.Kei te whakamahia te nuinga i roto i te keri percussive hurihuri kei roto nga hau me te wai.Ko ona waahanga matua ko te paipa (kakao) tinana me te hononga.
Ko ta maatau putorino kohao ki raro ka hangaia i runga i nga paerewa API.A, i runga i nga whakaritenga motuhake, ka whakaratohia ano e matou tenei momo putorino DTH i roto i nga korero rereke Hainamana me Amerika.
Mo ona painga, he ahuatanga o te rigidity nui, te kaha hiri pai, te hanganga o waho papatahi, me te taipana iti me te aukati i te wa e huri ana.
Mo te kohinga, he paihere putorino DTH ka whakakiia e tetahi huinga anga rino, a he paihere 30 ki te 40 paipa keri.
Tawhā Hangarau o DTH Drill Pipe (Outer Flat Drill Rod):
| Diamita | Te roa | Wrench Flats | Miro |
| 50-194mm | 500-10700mm | 40、57、65、75、83、95mm | F42×10 F48×10 2 3/8''API REG |
| 2 7/8''API REG 3 1/2''API REG 2 3/8''API IF | |||
| 3 1/2”BECO 4”BEKO 4 1/2”BECO | |||
| 5 1/4”BECO |
