YTQC Ụdị Drill String Magnet bụ nke mejupụtara ahụ,magnetik isi, nkwụsị nkwụsị, ịghasa, wdg
Na-egwe ọka na ịkụ azụ ọrụ, site na-ekesa mkpọpu alammiri mmiri, ala oghere irighiri ihe ga-adsorbed na magnetik isi nke akuakuzinwo eriri eriri azu magnet n'okpuru mgbasa edinam, na ndị a irighiri ihe ga-alaghachi n'ala ọnụ na akuakuzinwo eriri eriri azu magnetik, nke mere na-enweta ọrụ nke-egwe ọka ọrụ na ihicha oghere ala n'oge ọ bụla.