Ubwoko bwinjizwamo ubwoko bwa c bivuga ibyo byinjijwe byerekana muburyo bwa diyama hamwe nu mpande zose ni 80 °. Mubisanzwe hariho umwobo unyuze muri sima, kandi kubitandukanya, urashobora kubona imirongo hejuru. Hariho amahame yigihugu kubijyanye na sima ya karbide yerekana insimburangingo ubwoko c. Turashobora gutangaCCMT CNMGetc. Ikibazo icyo ari cyo cyose wabajije cyangwa ibibazo byerekeranye na tungsten karbide yinjizwamo ubwoko bwa c bizakirwa neza.