Ma 9 7/8 mainchesi obowola migodi a IADC635/IADC735 amapereka magwiridwe antchito amphamvu pakupanga zinthu zolimba pakati ndi zolimba monga miyala yamchere, miyala yamchenga, ndi dolomite. Ma premium tungsten carbide inserts amatsimikizira kuti zinthuzo zimalowa mwachangu komanso sizimawonongeka bwino. Ma roll bearings otsekedwa okhala ndi chitetezo champhamvu amawonjezera nthawi yogwirira ntchito ndikuwonjezera kukhazikika. Ma API standard amatsimikizira kuti zinthu zikugwirizana bwino. Kapangidwe kodulira ndi kuzungulira kwabwino kumathandizira kuti kubowola kugwire bwino ntchito, kuchepetsa nthawi yogwira ntchito, komanso kuchepetsa ndalama zogwirira ntchito, zomwe zimapangitsa kuti zikhale zoyenera kubowola migodi movutikira komanso kubowola mabowo ophulika.
Nthawi yotumizira: Marichi-04-2026