152 ~ 203mm (E Tloaelehileng);203-254mm (Boholo bo Felletseng)
Kopo
Merafo, Quarry, Seliba sa Metsi, Seliba sa Geothermal, Peeling, Motheo, Matlafatso ea Letsoapo
Mefuta e meraro ea sefahleho sa Bit le mefuta e 'meli ea libopeho tsa likonopo lia fumaneha
Sefahleho se Sephara
Sefahleho sa Concave
Sefahleho se Convex
Konopo ea Spherical
Konopo ea Ballistic
Sefahleho se Sephara Kopo: Popeho ea mafika a thata le a abrasive. Sebopeho se tloaelehileng: Granite, lejoe la mokoetla le thata, basalt.
Sefahleho sa Concave Kopo: Libopeho tse thata tse mahareng ho isa ho tse thata.Maqhubu a fokolang, a robehileng.Taolo e babatsehang bakeng sa ho kheloha ha lesoba. Sebopeho se tloaelehileng: Granite, lejoe la mokoetla le thata, basalt.
Sefahleho se Convex Tšebeliso: Lejoe le thata le bonolo ho isa bohareng.Sebopeho se sa hlabang.Sekhahla se phahameng sa ho kenella. Sebopeho se tloaelehileng: Limestone, mokoetla o thata, shale.
Litšobotsi tsa DTH BIT
1. Theknoloji e babatsehang ea ho kenya li-insetting e tiisa hore li-carbides li ke ke tsa theoha ho tloha 'meleng o monyenyane.
2. Thepa e tsoetseng pele ea phekolo ea mocheso le thekenoloji ho netefatsa botsitso ba ts'ebetso ea 'mele e nyenyane.
3. Moqapi o khethehileng oa holim'a metsi, moralo oa sebopeho le theknoloji e khethehileng ea ts'ebetso e amoheloa ho netefatsa bophelo ba tšebeletso ea DTH bit bakeng sa ho thehoa ha majoe a fapaneng.
Re ka boela ra fana ka likotoana tse ling tsa boholo ka li-shank tse fapaneng.Haeba o hloka lintlha tse ling, ka kopo ikopanye le thekiso ea rona bakeng sa lintlha.
3.5”:DHD3.5, IR3.5, BR33
4”:DHD340, COP44, QLX40, TD40, SD4, MISSION40
5”:DHD350, COP54, QL50, SD5, MISSION50
6':DHD360, COP64, QL60, SD6, MISSION60
8”:DHD380, QL80, SD8, MISSION80
10”:SD10, NUMA100
Sekhahla se seholo sa DTH BITS
Likotoana tse kholo tsa bophara li sebelisoa haholo lits'ebetsong tse tharo: qubu e kentsoeng pele, qubu e telele ea spiral le qubu e kholo ea bophara ba pheletso.
Re ka fana ka li-bits tse kholo tse nang le boholo bo fapaneng le li-shank:
12”:DHD112, SD12, NUMA120, NUMA125
14”:NOMA125
18':NUMA180
24”:NUMA240
Likarolo tse kholo tsa Diameter DTH Bits
E pharaletseng e sebelisoa bakeng sa ho etsa mafika a rarahaneng joalo ka mahaheng, majoana, maphao joalo-joalo;
Ho cheka ka har'a majoe a thata ka sekhahla se phahameng sa ho kenella;
