ABSTRACT: Bir been abuur ah waxaa loo qaybin karaa birta kaarboon, birta daawaha hoose, birta daawaha dhexdhexaadka ah iyo birta daawaha sare.Biraha kala duwani waxay leeyihiin astaamo iyo adeegsi kala duwan.Sida 5CrMnMo, 3Cr2W8V birta loo isticmaalo samaynta been abuurka kulul ayaa dhinta;1Cr13, 2Cr13, 3Cr13, 4Cr13 birta loo isticmaalo caafimaadka sidoo kale...
Akhri wax dheeraad ah