Daim Ntawv Sib Tham Qhov Groove High -} shates reaming laum yeeb nkab laum yeeb nkab laum yeeb nkab laum yeeb

Khoom Piav Qhia‌

Lub Tiliangular Kauv Groove High - Tus reaming laum yeeb nkab yog ncaj qha manic thiab ua tiav ntawm cov yeeb nkab lub cev. Cov kauv grooves feem ntau txo kev tiv thaiv thaum lub sijhawm xyaum ua haujlwm / rho tawm. Thaum ntsib kev txawv txav ntawm cov yeeb nkab lossis cov yeeb nkab sib tsoo tuaj yeem tsoo cov yeeb nkab tshem tawm, siv cov yeeb nkab tau cuam tshuam nrog cov yeeb nkab thiab cov yeeb nkab daig.

‌Khoom nta‌

Tus qauv sib xyaw ua kom muaj zog txhim kho lub laum yeeb nkab torsional zog thiab bender resistance;

Thickened tsim ntawm ob qho kev sib txuas kawg sib txuas tau zoo ua kom cov phab ntsa tuab ntawm cov kab xov;

Piv nrog kauv laum kav dej: Ntau dua Hniav Hardness / Lub Zog thiab zoo dua kev coj tsis kam;

Piv nrog peb cov kav dej tho kev lag luam: KAUV CERVES KAWG PERNETES TIAV TSHEB LOS NTAWM COV PLAILE CHREBRIS LOS NTAWM Borehole mus rau saum npoo;

Dav {- Hniav qauv Minimizies phab ntsa scraping, kom ntseeg tau kab hlau ruaj khov.

‌Cov Ntawv Thov‌

Feem ntau siv rau:

Loj - diameter dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier dier drilling hauv Coal Mines

Kev Siv Dej Kev Siv Borehole Siv

Ze li -} Kab Rov Tav Directional Drilling (Ncej / Qhov Kev Siv).

Kev qhia tshwj xeeb