Insimbi yesikwele: iqinile, isitokwe sebha.Ihlukaniswa neshubhu lesikwele, elingenalutho, okuyipayipi.Insimbi (Insimbi): iwumsebenzi owenziwe ngama-ingots, amabhilidi noma insimbi ngokucutshungulwa kwengcindezi ibe yizimo ezihlukahlukene, osayizi kanye nezakhiwo ezidingekayo.Ipuleti lensimbi eliwugqinsi olumaphakathi, ipuleti lensimbi elincanyana, ishidi lensimbi kagesi le-silicon, i-strip steel, insimbi engenamthungo yepayipi lensimbi, ipayipi lensimbi elishiselwe, imikhiqizo yensimbi nezinye izinhlobo.